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
      • Certification Label
      • DSO Codes
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YOUR CART

air cleaners

  • Description
  • Operation
  • Part Numbers
  • Testing
  • Illustrations
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Air cleaners like the Edelbrock on the right sure do look good and sound great when the secondaries open on a 4bbl. However, replacing the stock air cleaner on one of these trucks, or any vehicle with a carb, is a really bad move. That is because the widely varying air temp that reaches the carb causes several problems.
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First is a changing air/fuel ratio. A carb is a remarkable device, but it cannot adjust for differing air temps. Since the air/fuel ratio is really the ratio of oxygen molecules to gasoline molecules, and since the number of oxygen molecules per volume of air changes dramatically with the temp, the air/fuel ratio does as well. Put another way, the only way to hold a constant AFR with a carb is to maintain the inlet air temp at some constant. But, according the the Carb Facts and Correcting Myths web site, underhood temps can go as high as 240 degrees, and that's exactly the air you pull into the carb with an open element cleaner. And, in winter the inlet air temp can be closer to zero.

Second, since colder, more dense air creates more power, it makes little sense to feed the engine 240 degree air when you can get it down to more like 120 degrees with the stock air cleaner and associated plumbing. How can that be? Well, the stock air cleaner has a duct that connects to the radiator support, which means it pulls air from ahead of the radiator. So the engine is breathing much cooler air than under-hood air which is heated by the radiator, exhaust manifolds, and all of the accessories.
And third there's winter driving where carb icing is a significant problem that the stock air cleaner solves. That's because there's a shroud around the exhaust manifold that channels hot air to the air cleaner very quickly after startup. But, wouldn't that mean you'd have really hot air to the carb in the summer? No, not with the simple-but-effective factory system, like the one on the right.
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The following pages are from a Mityvac owner's manual and they explain how the heated-inlet air system works and how to test it.
  • Housing & Filter
  • Snorkel
  • Shroud
  • Cold Air Duct
  • Other
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Check valves were used in many places in the vacuum systems on these trucks, and one place was on the air cleaner to keep the vacuum to the vacuum motor that controlled the air temp to the carb.  One example of that is in the illustration to the right.

The basic part number to that part is 9E697, but in order to find one you need the full part number.  However, there are two ways to find the full part number: by looking it up in the calibration parts list for your specific application, or reading the number or color code on the one you have.  But the calibration parts list approach isn't easy, so I suggest using the code on your part.  And toward that end the cross reference below on the left should help.
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  • Temp Control Testing
  • Vacuum Delay Valve
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  • 230 & 300 Six
  • Windsor
  • 351M & 400
  • 460
  • Diesel
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