Gary's Garagemahal (the Bullnose bible)
  • Bullnose Forum
    • Guidelines
    • Ford Truck Show
    • Forum FAQ's
    • Member's Map
    • Forum & Website Issues
    • Test Forum
    • Smilies
  • Documentation
    • Accessories >
      • Air Horns
      • CB Radio
      • Roll Bar
      • Step
      • Tie Down Hooks
      • Tonneau Cover
    • Body >
      • Bronco Rear Window
      • Body Shell, Exterior Trim, Frame & Underbody
      • Door Latches & Locks
      • Door Hinges Checks & Weatherstrips
      • Doors Hood & Tailgate General Service
      • Front Door Window Glass & Mechanisms
      • Hood & Hinges
      • Hood Latch
      • Lock Cylinders & Keys
      • Power Door Locks
      • Power Windows
      • Stationary Glass - Butyl Seal
      • Stationary Glass - Weatherstrip Seal
      • Tailgate
      • Vent Window Mechanism
      • Window Glass & Mechanisms - General Service
    • Bullnose FAQ's
    • Bullnose Upgrades
    • Calibration Info & Part #'s
    • Cooling Systems >
      • Cooling Fan #'s & Illustrations
      • Cooling System Illustrations
      • Coolant Recovery & Windshield Washer Reservoirs
      • Elbows
      • Heater Hoses
      • Hose Clamps
      • Radiator Hoses
      • Radiator Support
      • Radiator Part #'s
      • Shroud Part #'s
      • Thermostats
      • Water Pump #'s & Illustrations
    • Driveline >
      • 4WD Front Hubs & Rotors
      • Axles & Differentials
      • Bell Housings
      • Brakes
      • Calculators
      • Clutches and Linkage
      • Drive Shafts
      • Engine Plates
      • Rear Axle Vents
      • Skid Plates
      • Transfer Cases
      • Transmissions >
        • Transmission & Transfer Case Ratios
        • Automatic Transmission >
          • Automatic Transmission Applications
          • General Automatic Transmission Service
          • Automatic Overdrive (AOD)
          • C6
          • Kickdown Linkage
          • Neutral Start Switch
        • Manual Transmissions >
          • Manual Transmission Applications
          • General Manual Transmission Service
          • 3.03 3-Speed Toploader
          • NP435
          • Single Rail Over Drive (SROD)
          • TOD & SROD Transmissions
          • TOD
          • Warner T-18 & T-19
          • ZF5
        • Over/Under Drives
      • Speedometer Gears, Cables, & Sensors
      • Wheels & Tires
      • Wheel Covers
    • Electrical >
      • 3G Conversion >
        • 3G Conversion - In Development
        • 3G Writeup From Lucas
      • Alternators
      • Ammeter
      • Batteries
      • Battery Cables
      • Battery Trays
      • Circuit Protection
      • Clocks
      • Computer Internals
      • Connectors
      • Distributors
      • Electrical Connectors
      • Electronic Engine Control (EEC)
      • Electricity 099
      • EVTM >
        • 1980 EVTM
        • 1981 EVTM
        • 1985 EVTM
        • 1986 EVTM
        • 1996 EVTM >
          • Index
          • Charging System
          • Daytime Running Lamps
          • Engine Control - 4.9L
          • Engine Control - 5.0L
          • Engine Control - 5.8L Under 8500 GVW
          • Engine Control - 5.8L Over 8500 & 7.5L EEC-IV
          • Engine Control - 7.5L EEC-V
          • Engine Control - Turbo Diesel
          • Fuse Panel & Circuit Protection
          • Grounds
          • How To Use This Manual
          • Ignition System
          • Keyless Entry
          • Power Distribution
          • Speed Control
          • Starting System
          • Transmission Control - 4R70W
          • Transmission Control - E4OD
      • Gauges
      • Ground Wires >
        • Engine-to-Firewall Ground
        • Battery to Ground
        • Battery to RH Fender
        • Firewall to Hood
      • ICVR
      • Ignition
      • Lighting >
        • Dome and Cargo Lights
        • Fog or Driving Lights
        • Headlight Wiring Harness
        • Lighting & Calculations
        • Tag Lights
      • PMGR Starter Wiring
      • Radios
      • Relays
      • Sending Units
      • Speed Control
      • Standard Wire And Color Codes
      • Switches
      • Tachometers
      • Terminals & Connectors
      • Voltage Drop Testing
      • Windshield Wipers
      • Wiring Connectors
      • Wiring Diagrams
      • Wiring Harnesses
      • Wire Routing
    • Emissions >
      • Understanding Emissions Controls
      • Inferred Mileage
      • Thermactor Systems
    • Engines >
      • Compression Ratio Calculator
      • General Engine Service
      • 3.8L (232) V6
      • 300 Six
      • Windsor Series
      • 351M and 400
      • 385 Series
      • IDI Diesel
      • Drive Belts
      • EGR Valves >
        • EGR System Description & Testing
        • EGR Spacer
        • Gasket: Carb/EGR to Intake (9447)
      • Flywheels
      • Manifolds, EGR, Heat Valves, etc
      • Engine Swaps >
        • 300 Six to Small-Block V8
      • Pulleys
      • Starters
    • Exhaust Systems
    • Exterior >
      • Beds, Tailgates, and Components
      • Bumpers
      • Exterior Mirrors
      • Exterior Moulding Retainers
      • Exterior Trim and Moulding
      • Frames >
        • Engine Perches
      • Fuel Filler Doors
      • Name Plates
      • Push Bars
      • Spare Tire Carriers
      • Stationary Glass - Butyl Type Seal
      • Tape And Decal Application
    • Fasteners & Illustrations >
      • Fastener Pictures
      • Fenders and Aprons
      • Frame
      • Headlights and Turn Signals
      • Hood
      • Radiator and Grille
    • Fuel & Air Systems >
      • 1985-1986 Fuel System Adjustments
      • 460 Fuel Systems
      • Air Cleaners
      • Carburetors, Chokes, & EFI >
        • EFI Idle Speed Adjustment
        • Jetting
        • How To Find Carb Parts
        • Chokes
        • Carter YFA 1bbl
        • EFI
        • Edelbrock
        • Motorcraft 2150
        • Holley 4180C
        • Motorcraft 7200 VV
      • Correct Cold Starting Procedures
      • Diagnostics
      • Fuel System Illustrations >
        • Fuel Filler Pipes
        • 1980-84 F-Series & Bronco
        • 1983-84 F-Series Diesel
        • 1983-87 F350 Chassis Cab DRW
        • 1985 F-Series 302 w/EFI
        • 1985-87 Bronco
        • 1985 on F-Series
      • Fuel System Part #'s >
        • Fuel Filler Pipes
        • Fuel Senders & Pumps
        • Fuel Tanks
        • Fuel Tank Selector Switch
        • Fuel Tank Selector Valve
        • Fuel Tank Shields
        • Fuel Vapor Valve
        • Fuel Vapor Separator
      • Fuel System Wiring
    • HVAC >
      • Blend Door Repair
      • HVAC Systems
      • 300 Six Compressor Illustrations
      • Factory A/C Brackets
    • Interchange >
      • Air Conditioning Interchange
      • Alternator Interchange
      • Brake Interchange
      • Carburetor Interchange
      • Crankshaft Interchange
      • Diesel Injector Pump Interchange
      • Distributor Interchange
      • Fuel Pump Interchange
      • Head Interchange
      • Starter Interchange
      • Steering Interchange
      • Window Lift Motor Interchange
      • Water Pump Interchange
    • Interior >
      • Behind The Seat Storage
      • Boots
      • Carpet
      • Dash
      • Doors >
        • Door Locks
        • Door Panels
        • Electric Windows & Locks
        • Handles & Boot
        • Vent Windows
        • Windows
      • Horn Pads
      • Insulation
      • Interior Soft Trim
      • Interior Trim
      • Instrument Panel Name Plates
      • Instrument & Radio Bezels
      • Kick Panels
      • Knobs
      • Painting Gauge Needles
      • Rear Corner Trim
      • Rear View Mirror
      • Salvaging Rosewood
      • Seat Belts
      • Seat Interchangeability
      • Seats & Seat Tracks
      • Sill Plates
      • Steering Columns & Steering Wheels
      • Sun Visors
    • Picture Galleries >
      • 1981 F100 With 318 Miles
      • 1983 XLS Survivor
      • 1983 Ford Bronco 4x4 Dobbs-Stroppe Team Chase Car
      • 1983 Bronco Survivor
      • 1984 Bronco XLT
      • 1984 F150 XL
      • 1984 F150 Survivor
      • 1984 FORD F-150 XLT PICKUP
      • 1985 F-150 Survivor
      • 1985 F150 4×4 Flareside
      • Big Blackie
      • Big Blue >
        • Big Blues Documentation
      • Dad's Truck >
        • Air Cleaner
        • Aluminum Wheel Refinishing
        • Electrical Components >
          • Alternator
          • Battery
          • Power Distribution
        • Gauges
        • Engine
        • Frame
        • Seats
        • Transfer Case
        • Transmission
      • Rusty
    • Reference >
      • Hose & Fittings
      • Standard & Utility Parts Catalog
    • Specifications >
      • Assembly Plants
      • Axle Ratios
      • Body Codes - Interior
      • Build Sheet Interpretation
      • Dimensions and Weights
      • Interior Paint
      • Calibration Codes
      • Certification Label
      • DSO Codes
      • Electrical
      • Engine Codes
      • Exterior Paint Codes
      • 10-01 Identification Codes
      • Lubricant Specifications
      • Model Codes
      • Spring Codes
      • Standard Features And Options
      • Towing
      • Transmission Codes
      • Tape Stripe Codes >
        • Bronco Tape Stripe Codes
        • F-Series Tape Stripe Codes
      • VIN Decoding
    • Suspension & Steering >
      • 2WD Spindles
      • Alignment
      • Body Mounts
      • Crossmembers
      • Front Suspension
      • Steering >
        • General Steering Service
        • Coupling - Rag Joint
        • Manual Steering Gear Box
        • Power Steering
        • Saginaw Conversions
        • Steering Columns
        • Tie Rods and Drag Links
      • Rear Suspension >
        • Auxiliary Springs
        • Rear Springs
      • Sway Bar
    • TSB's >
      • TSB Index
      • TSB Bulletin List
      • Body/Windnoise/Water Leaks/Trim >
        • 81-06-13 Bumper Guard & Tire Carrier
        • 81-7-23 Seat Belts Become Too Tight
        • 83-3-15 Pickup Box Alignment
        • 81-06-15 Pickup Box Wood Floor Replacement
        • 83-13-4 Sheet Metal Welding Procedures
        • 83-16-17 Pickup Box Lean
        • 83-24-18 Swing-Lock Mirror Moves
        • 83-13-22 Electric Mirror Loose Glass
        • 83-24-19 Mirror Head Vibration
        • 87-01-18 Tool Box Mount
      • Electrical / Climate Control / Starting / Charging >
        • 80-4-13S A/C RAPID ON-OFF CYCLING OF COMPRESSOR CLUTCH
        • 81-1-10 FM Radio Interference
        • 81-7-24 Temperature Control Cable Too Long
        • 84-24-9 Noise - Radio Ignition Buzz
        • 87-03-07 EEC-IV Driveability TSB Summary
        • 87-07-20 Radio Ignition Noise
        • 87-21-10 EEC-IV Diagnostics
        • 88-05-07 Malfunction Indicator Light Introduction
        • 89-22-08 Emissions Maintenance Warning Module
        • 90-25-12 Speed Control
        • 96-21-04 2G Alternator Repair
      • Brakes/Steering/Suspension/Wheels >
        • 80-14-14-S STEERING
        • 81-06-04 Integral Power Steering Gear
        • 81-06-16 Front Wheel Grease Seal Gaskets
        • 81-06-17 Rear Parking Brake Cables
        • 81-2-25 REAR SUSPENSION TORQUE SPECS
        • 89-19-01 Brake Noise Recap Of TSB's
        • 89-25-16 Brake Ride Height Proportioning Valve
        • 90-13-9 Frame Cracking At Rear Shock Mount
        • 96-15-11 Frame-Rivet Replacement With Bolts
        • 97-03-10 Frame Creaking/Popping
        • Steering Gear Frame Liner
      • Engine/Cooling System/Exhaust >
        • 81-2-27 ENGINE DETONATION
        • 83-13-7 Correct Oil Fill Level
        • 83-25-21 Air Cleaner Sealing
        • 83-13-8 RTV Sealant - New Material
        • 87-06-10 Stall/No Start: TFI
        • 88-07-16 4.9L Exhaust Manifold Warping
      • Transmission/Clutch/Driveshaft/Axle >
        • 81-5-15 AOD TRANSMISSION
        • 81-06-18 Clutch Housing Fills w/Mud/Dirt
        • 81-07-25 Clutch Shudder/Chatter In Reverse
        • 81-7-26 Missing Shims On SROD
        • 82-25-16(S) Upshift Indicator Light
        • 83-3-23 Axle Lubricant Drain And Refill
        • 83-23-17 8.8" Rear Axle Vent
        • 84-24-13 Transfer Case - Grinding/Block-Out
        • 90-16-07 High Clutch Effort
      • Driveability/Fuel/Ignition/Emissions >
        • 81-6-19 Cold Driveaway Performance Improvements
        • 81-6-20 Piston Slap During Cold Driveaway
        • 81-6-21 Power Valve Vacuum Hose
        • 83-11-12-S Stall/No Start/Hessitation
        • 88-05-14 Low Oil Pressure
        • 91-25-07 IAC Bypass
        • EMW Module
      • Noise/Vibration/Ride/Squeaks/Rattles >
        • 80-1-12-S REAR SPRING SQUEAK
      • Miscellaneous/General >
        • 83-14-1 UNDERHOOD PRODUCTION STAMP RELOCATION
      • Health/Safety/Environmental Hazard information
      • CALIBRATION: 4-53F-R00
      • Fuel Cross-Flow
    • Underhood >
      • Cowl Seal
      • Engine Compartment Lamp
      • Fender Aprons
      • Jacks, Lug Wrenches, etc
      • Speed Control
      • Tool Box
    • Vacuum Systems >
      • Vacuum System Acronyms
      • Vacuum Diagrams >
        • 300 Six
        • 302/5.0L
        • 351W
        • 351M/400
        • 460 V8
      • Vacuum Fittings
      • Vacuum Reservoirs
      • Vacuum System Requirements
      • Vacuum System Testing
    • Metrics
    • About Me/Contact Me >
      • Youth Classes >
        • Automotive Maintenance >
          • Fall of 2015
        • Building Web Sites >
          • Lesson 1
          • Lesson 2
          • Lesson 3
          • LTC
        • Overview of Paul's Life, Journeys, & Works >
          • Lesson 1
          • Lesson 2
      • Projects >
        • Engine Cradle
        • Gauge Pocket
        • Rear Bumper And Spare Tire Carrier
    • Year-To-Year Differences >
      • Door Locks & Turn Signals
    • Test Page
    • 91-6-7 Sterling 10.25 Hub Leaks
  • Manuals & Literature
  • About
  • Truck Shows
    • 2020 Truck Show >
      • Entrant #1: Dad's Truck
      • Entrant #2: Big Blue
      • Entrant #3: Tommy Sides 1986 F150
      • Entrant #4: Darth/Bill Vose
      • Entrant #5: Sam Noller's 1985 Bronco
      • Entrant #6: Mein Laster
      • Entrant #7: Andre's Bronco
      • Entrant #8: Chad's Rosebud
      • Entrant #9: Matthew’s Truck of Doom
      • Entrant #10: Ron's Flareside
      • Entrant #11: Cory's Blue Mule
      • Entrant #12: Ratdude747'S 1984 F150
      • Entrant #13: Ratdude747's '95 Ranger
      • Entrant #14: Heinz' 1986 F150
      • Entrant #15: Anna's Toy
      • Entrant #16: Frank's 1981 F-150 Custom
      • Entrant # 17: Petes 1981 F150 Flareside
      • Entrant #18: Eric's F250 XLT Lariat
      • Entrant #19: Geejaypea's Georgian Hulk
      • Entrant #20: JohnnyBronco85's Bronco
      • Entrant #21: Skaeke's 1985 F150 Lariat
      • Entrant #22: Sam1982's F100
      • Entrant #23: NostraDanus' 1986 Bronco
      • Entrant #24: MarkF100's F100
      • Entrant #25: Bruce moose4x4's 1996 Bronco
      • Entrant #26: Bruce Mooose4x4's 1995 F150
      • Entrant #27: Troy/66gtk's 1983 F150 XL SWB 4x2
      • Entrant #28: Matt Wood's 1985 Bronco
      • Entrant #29: WelderScott's '78 F150
      • Entrant #30: Mehmetcelikel's Brownie Dually
      • Entrant #31: Kristopherdb's 1985 Flairside 4x4
      • Entrant #32: Clifton's Tessa
      • Entrant #33: BinFord's Beverly
      • Entrant #34: BinFord's Crackling Rosie
      • Entrant #35: Dan aka dblohowiak's 1986 F250HD
      • Entrant #36: Jonathan's 1981 F150
      • Entrant #37: Jonathan's 1995 F Superduty
      • Entrant #38: Jonathan's 1986 F350 short bed crew cab IDI
      • Entrant #39: Brian's 1986 F250
      • Entrant #40: Jay's 1986 F150
      • Entrant #41: Eddie's 1981 F100 Custom
      • Entrant #42: Nick & George's Brutus
      • Entrant #43: Matthew's 1983 F350
      • Entrant #44: Hogie's 81 F250
      • Entrant #45: TontoKowalski's 1985 F150
      • Entrant #46: Danny's 1982 Bronco
      • Entrant #47: Greg's 1980 F150 Ranger XLT
      • Entrant #48: Chris' 1982 XLS
      • Entrant #49: Chris' 1985 Bronco
      • Entrant #50: Ken & Kathy's 1977 F250
      • Entrant #51: Ken & Kathy's 1985 Flareside
      • Entrant #52: Kevin/Teach's F250 Lariat
    • 2021 Truck Show
    • 2022 Truck Show
  • New Bullnose Test Forum
  • Bullnose Forum
    • Guidelines
    • Ford Truck Show
    • Forum FAQ's
    • Member's Map
    • Forum & Website Issues
    • Test Forum
    • Smilies
  • Documentation
    • Accessories >
      • Air Horns
      • CB Radio
      • Roll Bar
      • Step
      • Tie Down Hooks
      • Tonneau Cover
    • Body >
      • Bronco Rear Window
      • Body Shell, Exterior Trim, Frame & Underbody
      • Door Latches & Locks
      • Door Hinges Checks & Weatherstrips
      • Doors Hood & Tailgate General Service
      • Front Door Window Glass & Mechanisms
      • Hood & Hinges
      • Hood Latch
      • Lock Cylinders & Keys
      • Power Door Locks
      • Power Windows
      • Stationary Glass - Butyl Seal
      • Stationary Glass - Weatherstrip Seal
      • Tailgate
      • Vent Window Mechanism
      • Window Glass & Mechanisms - General Service
    • Bullnose FAQ's
    • Bullnose Upgrades
    • Calibration Info & Part #'s
    • Cooling Systems >
      • Cooling Fan #'s & Illustrations
      • Cooling System Illustrations
      • Coolant Recovery & Windshield Washer Reservoirs
      • Elbows
      • Heater Hoses
      • Hose Clamps
      • Radiator Hoses
      • Radiator Support
      • Radiator Part #'s
      • Shroud Part #'s
      • Thermostats
      • Water Pump #'s & Illustrations
    • Driveline >
      • 4WD Front Hubs & Rotors
      • Axles & Differentials
      • Bell Housings
      • Brakes
      • Calculators
      • Clutches and Linkage
      • Drive Shafts
      • Engine Plates
      • Rear Axle Vents
      • Skid Plates
      • Transfer Cases
      • Transmissions >
        • Transmission & Transfer Case Ratios
        • Automatic Transmission >
          • Automatic Transmission Applications
          • General Automatic Transmission Service
          • Automatic Overdrive (AOD)
          • C6
          • Kickdown Linkage
          • Neutral Start Switch
        • Manual Transmissions >
          • Manual Transmission Applications
          • General Manual Transmission Service
          • 3.03 3-Speed Toploader
          • NP435
          • Single Rail Over Drive (SROD)
          • TOD & SROD Transmissions
          • TOD
          • Warner T-18 & T-19
          • ZF5
        • Over/Under Drives
      • Speedometer Gears, Cables, & Sensors
      • Wheels & Tires
      • Wheel Covers
    • Electrical >
      • 3G Conversion >
        • 3G Conversion - In Development
        • 3G Writeup From Lucas
      • Alternators
      • Ammeter
      • Batteries
      • Battery Cables
      • Battery Trays
      • Circuit Protection
      • Clocks
      • Computer Internals
      • Connectors
      • Distributors
      • Electrical Connectors
      • Electronic Engine Control (EEC)
      • Electricity 099
      • EVTM >
        • 1980 EVTM
        • 1981 EVTM
        • 1985 EVTM
        • 1986 EVTM
        • 1996 EVTM >
          • Index
          • Charging System
          • Daytime Running Lamps
          • Engine Control - 4.9L
          • Engine Control - 5.0L
          • Engine Control - 5.8L Under 8500 GVW
          • Engine Control - 5.8L Over 8500 & 7.5L EEC-IV
          • Engine Control - 7.5L EEC-V
          • Engine Control - Turbo Diesel
          • Fuse Panel & Circuit Protection
          • Grounds
          • How To Use This Manual
          • Ignition System
          • Keyless Entry
          • Power Distribution
          • Speed Control
          • Starting System
          • Transmission Control - 4R70W
          • Transmission Control - E4OD
      • Gauges
      • Ground Wires >
        • Engine-to-Firewall Ground
        • Battery to Ground
        • Battery to RH Fender
        • Firewall to Hood
      • ICVR
      • Ignition
      • Lighting >
        • Dome and Cargo Lights
        • Fog or Driving Lights
        • Headlight Wiring Harness
        • Lighting & Calculations
        • Tag Lights
      • PMGR Starter Wiring
      • Radios
      • Relays
      • Sending Units
      • Speed Control
      • Standard Wire And Color Codes
      • Switches
      • Tachometers
      • Terminals & Connectors
      • Voltage Drop Testing
      • Windshield Wipers
      • Wiring Connectors
      • Wiring Diagrams
      • Wiring Harnesses
      • Wire Routing
    • Emissions >
      • Understanding Emissions Controls
      • Inferred Mileage
      • Thermactor Systems
    • Engines >
      • Compression Ratio Calculator
      • General Engine Service
      • 3.8L (232) V6
      • 300 Six
      • Windsor Series
      • 351M and 400
      • 385 Series
      • IDI Diesel
      • Drive Belts
      • EGR Valves >
        • EGR System Description & Testing
        • EGR Spacer
        • Gasket: Carb/EGR to Intake (9447)
      • Flywheels
      • Manifolds, EGR, Heat Valves, etc
      • Engine Swaps >
        • 300 Six to Small-Block V8
      • Pulleys
      • Starters
    • Exhaust Systems
    • Exterior >
      • Beds, Tailgates, and Components
      • Bumpers
      • Exterior Mirrors
      • Exterior Moulding Retainers
      • Exterior Trim and Moulding
      • Frames >
        • Engine Perches
      • Fuel Filler Doors
      • Name Plates
      • Push Bars
      • Spare Tire Carriers
      • Stationary Glass - Butyl Type Seal
      • Tape And Decal Application
    • Fasteners & Illustrations >
      • Fastener Pictures
      • Fenders and Aprons
      • Frame
      • Headlights and Turn Signals
      • Hood
      • Radiator and Grille
    • Fuel & Air Systems >
      • 1985-1986 Fuel System Adjustments
      • 460 Fuel Systems
      • Air Cleaners
      • Carburetors, Chokes, & EFI >
        • EFI Idle Speed Adjustment
        • Jetting
        • How To Find Carb Parts
        • Chokes
        • Carter YFA 1bbl
        • EFI
        • Edelbrock
        • Motorcraft 2150
        • Holley 4180C
        • Motorcraft 7200 VV
      • Correct Cold Starting Procedures
      • Diagnostics
      • Fuel System Illustrations >
        • Fuel Filler Pipes
        • 1980-84 F-Series & Bronco
        • 1983-84 F-Series Diesel
        • 1983-87 F350 Chassis Cab DRW
        • 1985 F-Series 302 w/EFI
        • 1985-87 Bronco
        • 1985 on F-Series
      • Fuel System Part #'s >
        • Fuel Filler Pipes
        • Fuel Senders & Pumps
        • Fuel Tanks
        • Fuel Tank Selector Switch
        • Fuel Tank Selector Valve
        • Fuel Tank Shields
        • Fuel Vapor Valve
        • Fuel Vapor Separator
      • Fuel System Wiring
    • HVAC >
      • Blend Door Repair
      • HVAC Systems
      • 300 Six Compressor Illustrations
      • Factory A/C Brackets
    • Interchange >
      • Air Conditioning Interchange
      • Alternator Interchange
      • Brake Interchange
      • Carburetor Interchange
      • Crankshaft Interchange
      • Diesel Injector Pump Interchange
      • Distributor Interchange
      • Fuel Pump Interchange
      • Head Interchange
      • Starter Interchange
      • Steering Interchange
      • Window Lift Motor Interchange
      • Water Pump Interchange
    • Interior >
      • Behind The Seat Storage
      • Boots
      • Carpet
      • Dash
      • Doors >
        • Door Locks
        • Door Panels
        • Electric Windows & Locks
        • Handles & Boot
        • Vent Windows
        • Windows
      • Horn Pads
      • Insulation
      • Interior Soft Trim
      • Interior Trim
      • Instrument Panel Name Plates
      • Instrument & Radio Bezels
      • Kick Panels
      • Knobs
      • Painting Gauge Needles
      • Rear Corner Trim
      • Rear View Mirror
      • Salvaging Rosewood
      • Seat Belts
      • Seat Interchangeability
      • Seats & Seat Tracks
      • Sill Plates
      • Steering Columns & Steering Wheels
      • Sun Visors
    • Picture Galleries >
      • 1981 F100 With 318 Miles
      • 1983 XLS Survivor
      • 1983 Ford Bronco 4x4 Dobbs-Stroppe Team Chase Car
      • 1983 Bronco Survivor
      • 1984 Bronco XLT
      • 1984 F150 XL
      • 1984 F150 Survivor
      • 1984 FORD F-150 XLT PICKUP
      • 1985 F-150 Survivor
      • 1985 F150 4×4 Flareside
      • Big Blackie
      • Big Blue >
        • Big Blues Documentation
      • Dad's Truck >
        • Air Cleaner
        • Aluminum Wheel Refinishing
        • Electrical Components >
          • Alternator
          • Battery
          • Power Distribution
        • Gauges
        • Engine
        • Frame
        • Seats
        • Transfer Case
        • Transmission
      • Rusty
    • Reference >
      • Hose & Fittings
      • Standard & Utility Parts Catalog
    • Specifications >
      • Assembly Plants
      • Axle Ratios
      • Body Codes - Interior
      • Build Sheet Interpretation
      • Dimensions and Weights
      • Interior Paint
      • Calibration Codes
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3g alternator conversion

swapping a 1g or 2g alternator for a 3g alternator

By Michael Shumack:
  • What’s the difference?
Early model trucks used a 1G (1st Generation) alternator with an external voltage regulator. This alternator put out 40 Amps (single pulley) or 60 Amps (double pulley). This system works fine for the power requirements of the early model trucks - but when additional electrical loads are added, like lights, stereo amp, winch, etc., the 1G alternator is underpowered.

In 1986 Ford started using the 2G (2nd Generation) alternator on the trucks. Ford replaced the 1G's external regulator in favor of the compact internal regulator design. However, the 2G series alternator, has largely been considered the bad apple of the bunch. The flaw was in the power output plug and a weak bridge rectifier. The plastic power plugs used blade type terminals which would lose connection and occasionally melt, short, and possibly cause under-hood fires. In 1996 Ford publicly recognized the fire hazard caused by the 2G alternator and released TSB 96-21-4.

​Fords 3G alternator was a giant leap in technology and quality. Ford trucks starting using the 3G in the 1992 F-150. The 3G was internally regulated, used two internal cooling fans, sealed bearings, and had a superior battery stud. The 3G’s were more efficient, and produced more amperage at idle than any of its predecessors.


Picture
​

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  • Why Not?
If the 3G is so great, why wouldn’t I want to do this swap? There are a couple of reasons not to do this swap –or at least some additional considerations:
  1. My electrical load is small (nothing added) so 45 or 60 amps is all I need.
  2. I have an Ammeter in the dash, I don’t want to lose that.​
 
  • I want to do this swap, how do I start?
First you need to get a 3G alternator. There are a couple of different models.
  1. 90 Amp (small case) or 130 Amp (large case). And aftermarket units up to 200A.
  2. Mounting ear locations (you need the mounts 180 degrees apart. 12 o’clock and 6 o’clock).
  3. There are two mounting ear lengths 7” hole-to-hole, and 8.25” hole-to-hole. The one you need depends on whether your stock belt setup is V-belt or Serpentine.

    Vehicles that are donors:
    90-99 Taurus/Sable (the 3.8L has 8.125” mounting. 3.0L has the 7” mount spacing) *Need to confirm this info.
    91-96 Lincoln V6
    94-95 Mustang 5.0L
    94-00 Mustang V6
    95-96 Windstar V6
    94-96 Thunderbird/Cougar 3.8L
    92-96 F-Series and E-Series

  • Which one – the 90A or 130A (or something bigger)?
The stock 3G is 90A or 130A but there are companies providing upgraded units (most commonly) at 160A and 200A using the large case frame.
But keep in mind, a single V-belt drive can only support up to 100A before the belt slips. A double v-belt or serpentine belt can support up to a 180A alternator. So if you go too large on the alternator output, you many need to improve your belt drive setup too.
How to tell if it’s a 90A or 130A: The number of cooling holes in the front that are in the three “ribbed” sections. Two holes is the 130A and four holes is the 90A,

* Trucks that currently have V-Belts use the 8.25” mounts, and trucks that have serpentine belts use the 7” mount spacing. (* Need to verify this info).
Picture
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There is not much reason to go with the smaller 90A model, except that in some cases the larger frame 130A model may require some “clearanceing” of the serpentine (aluminum) mounting bracket. If you don’t want to grind on your mounting bracket and 90A is all you need, then go with the smaller case alternator.


Also on a 1G to 3G swap, you may need to modify the tension-adjustment bracket for the V-Belt setups. The current bracket has a slight “offset” or jog to it. The bracket can easily be removed and “flattened” so that it fits behind the mounting ear.
The pulleys can be swapped from 1G or 2G to a 3G. Putting a V-belt pulley on a 3G that has a serpentine belt pulley requires a small-thin shim under the pulley to keep V-pulley from rubbing on the 3G case.
  • Electrical:
You’re going through with the swap. You have the alternator, what else is needed?
  1. New cable from starter solenoid (or battery) to alternator. Either 4GA or 2GA. I think 4GA is fine for either size alternator, but you can go with the larger 2GA if you want (note that the thicker 2GA cable is stiffer and harder to route).
  2. A fuse (very important) you need a “mega-fuse” or circuit breaker at least 15A to 20A larger than the Alternator size (so 110A fuse for the 90A alternator or 150A fuse for the 130A alternator).
  3. You may need to change the Carburetor Electric Choke “cap”. If you have the old style that uses 7.5V from the 1G alternator stator terminal, you need to replace the choke cap with a 12V type and run a new 12V to it (more on this below).
You can use an AMG style fuse (my preference) or a circuit breaker style. Google “Bussmann automotive circuit protection”
Wiring for trucks with “Charge Warning Light” (not the in-dash Ammeter).  Note that the Yellow wire from the Alternator “A” terminal is usually connected to the Alternator’s “Bat” terminal, and not routed back to the solenoid Bat terminal but either way is fine.
Picture
On the left, below, you can see the factory charge cable that you could get at the salvage when you get the alternator.  But if you didn’t get the cable with the alternator, you can buy it. There are several companies making/selling these.
Picture
  • A word on Clocking
The back of the alternator can be attached to the front of the alternator in multiple positions. You need to be sure the battery terminal and connector is located in the correct position. The front of the alternator has the mounting tabs/ears so it can only go on one way when mounted to your engine. But if the back of the alternator in not “clocked” properly, the alternator battery terminal and connector may be on the wrong side (i.e. facing water pump). I have not seen any 3Gs like this – but be aware that it is possible. So keep an eye out for this if you’re pulling from a JY.
BTW, the back of the alternator can be rotated (re-clocked) if needed, but it is reported that this job is best left to an alternator shop.​

  • IMPORTANT
Lastly, if you have a truck with the factory Ammeter in the dash, you must disconnect it. The higher output of the 90A or larger alternator is too much current for the stock Ammeter. There are some discussions on adding resistance to the shunt wire in order to keep the factory gauge, but I don’t think it is worth the effort. If you did get it to work the movement of the amp gauge needle at normal charging would not be perceivable. You would need to be charging around 30 or 40 amps to see the needle move. Plus these ammeters are a known problem for “shorting” and can start a fire which is why Ford stopped using them and went to the Voltmeter.
​

If you want the factory gauge to work – it can be converted to a Voltmeter. There are threads on how to do this. Or you can buy one that is already converted for around $40. However it will still have “D” and “C” and not the actual voltage readings.

  • 7.5 volt – Electric Choke modification:
The 3G Alternator has a "Blk/Wht" wire going from the center of the plug running to a terminal on the alternator body. This wire is the stator wire. You can tap into this wire to power your (old style 7.5V) choke  or you can convert the 7.5 choke to 12V following the instructions below.

If you have the style electric choke that uses 7.5V for heating, you can change this to the 12V choke cap. Once you replace the cap, you need to figure out where to get the 12V power from.

You don’t want “Key On” power because then the choke will be heating up with the key on (such as if your just listening to the radio). Ford used the alternator stator terminal because it was only hot with the engine running. The best thing to do is to add an “Oil Pressure Switch”. It’s a two terminal switch where the terminals are ”normally open” with no pressure and closed when oil pressure is present. Then you run “Key On” power to one side of the switch and the other side goes to the choke. This way the power only passes through the Oil Pressure Switch (don’t confuse this with an Oil Pressure Sender which is for the oil pressure gauge) with the engine is running (when you have oil pressure). The choke will only heat when the engine is running as designed. Holly and Ford both make this switch.
For Holley Choke Cap, p/n is 45-258.