Authenticity reference

Transmission and axle agreement

numbers matching · documented

53,667 published MX cars reference for the 1968 Mercury Montego MX 1968 Mercury Montego MX

Reference Details

Common issue: A desirable overdrive, automatic, or ratio conversion represented as factory installed · 1957 Ford Custom 300
Confidence: documented · 1957 Ford Custom 300
Correct value: Transmission type, overdrive or Fordomatic equipment, axle housing, ratio, tags, and dates agree with records · 1957 Ford Custom 300
Where to check: Patent plate and paperwork, transmission case and linkage, overdrive unit, axle tag and center section · 1957 Ford Custom 300
Common issue: A later four-speed, automatic, overdrive, limited-slip unit, or ratio change represented as factory installed · 1960 Ford Starliner
Confidence: documented · 1960 Ford Starliner
Correct value: Transmission and axle warranty-plate fields agree with case, linkage, overdrive or automatic equipment, ratio, tag, dates, and records · 1960 Ford Starliner
Where to check: Warranty plate, transmission case and tag, linkage, axle tag and center section · 1960 Ford Starliner
Common issue: A later T-10, automatic, overdrive, Equa-Lock unit, or ratio change represented as factory installed · 1961 Ford Starliner
Confidence: documented · 1961 Ford Starliner
Correct value: Transmission and axle warranty-plate fields agree with case, tag, linkage, ratio, differential, dates, and records · 1961 Ford Starliner
Where to check: Warranty plate, transmission case and tag, shifter and linkage, axle tag and center section · 1961 Ford Starliner
Common issue: A later four-speed, automatic, overdrive, Equa-Lock unit, or gear change represented as factory installed · 1962 Ford Galaxie 500
Confidence: documented · 1962 Ford Galaxie 500
Correct value: Transmission and axle plate fields agree with case, tag, linkage, ratio, differential, dates, and records · 1962 Ford Galaxie 500
Where to check: Warranty plate, transmission case and tag, shifter/linkage, axle tag and center section · 1962 Ford Galaxie 500
Common issue: A later four-speed, automatic, overdrive, limited-slip unit, or gear change represented as factory installed · 1963 Ford Galaxie 500
Confidence: documented · 1963 Ford Galaxie 500
Correct value: Transmission and axle plate fields agree with case, tag, linkage, ratio, differential, dates, and records · 1963 Ford Galaxie 500
Where to check: Warranty plate, transmission case and tag, shifter/linkage, axle tag and center section · 1963 Ford Galaxie 500
Common issue: A later four-speed, automatic, limited-slip unit, or gear change represented as factory installed · 1964 Ford Galaxie 500
Confidence: documented · 1964 Ford Galaxie 500
Correct value: Plate fields agree with transmission case, linkage, axle tag, ratio, differential, dates, and records · 1964 Ford Galaxie 500
Where to check: Warranty plate, transmission case and tag, shifter/linkage, axle tag and center section · 1964 Ford Galaxie 500
Common issue: A later four-speed, automatic, limited-slip unit, or gear change represented as factory installed · 1964 Mercury Marauder
Confidence: documented · 1964 Mercury Marauder
Correct value: Transmission and axle plate fields agree with case, linkage, tag, ratio, differential, dates, and engine compatibility · 1964 Mercury Marauder
Where to check: Data plate, transmission case and linkage, axle tag and center section, and dated records · 1964 Mercury Marauder
Common issue: Later race transmission, rear axle or gear set represented as factory-delivered equipment. · 1965 Dodge Coronet A990 Super Stock
Confidence: documented · 1965 Dodge Coronet A990 Super Stock
Correct value: Factory A833 or reverse-pattern TorqueFlite path with compatible original axle evidence · 1965 Dodge Coronet A990 Super Stock
Where to check: Transmission case and stamp, shifter and linkage, axle housing and ratio, dates and build records · 1965 Dodge Coronet A990 Super Stock
Common issue: Later race transmission, rear axle or gear set represented as factory-delivered equipment. · 1965 Plymouth Belvedere A990 Super Stock
Confidence: documented · 1965 Plymouth Belvedere A990 Super Stock
Correct value: Factory A833 or TorqueFlite path with matching Super Stock axle evidence · 1965 Plymouth Belvedere A990 Super Stock
Where to check: Transmission case and stamp, shifter and linkage, axle housing and ratio, dates and paperwork · 1965 Plymouth Belvedere A990 Super Stock
Common issue: A 3.89 Traction-Lok assumption applied to every R-code body. · 1967 Mercury Comet 427 R-Code
Confidence: reported · 1967 Mercury Comet 427 R-Code
Correct value: Four-speed and axle tags, ratio, differential type, and dates should agree with the individual records · 1967 Mercury Comet 427 R-Code
Where to check: Transmission tag, axle tag, build sheet, invoice, or Marti report · 1967 Mercury Comet 427 R-Code
Common issue: The road-test car's automatic and 4.11 axle assumed for every 428 Cyclone GT. · 1968 Mercury Cyclone GT 428 Cobra Jet
Confidence: reported · 1968 Mercury Cyclone GT 428 Cobra Jet
Correct value: Transmission type, tag, axle ratio, differential, and dates should agree with the individual build records · 1968 Mercury Cyclone GT 428 Cobra Jet
Where to check: Transmission tag, axle tag, invoice, build sheet, or Marti report · 1968 Mercury Cyclone GT 428 Cobra Jet
Common issue: Later gearbox, gear, or limited-slip conversion represented as factory-installed · 1968 Mercury Montego MX
Confidence: documented · 1968 Mercury Montego MX
Correct value: Three-speed, four-speed, or Cruise-O-Matic and the installed axle ratio match the body, engine, warranty codes, tags, and dates · 1968 Mercury Montego MX
Where to check: Warranty plate, transmission case and tag, shifter and linkage, axle tag and tooth count, and service records · 1968 Mercury Montego MX
Common issue: Generic Hemi drivetrain, incorrect rear axle, or swapped transmission presented as original · 1969 Dodge Coronet R/T 426 Hemi
Confidence: documented · 1969 Dodge Coronet R/T 426 Hemi
Correct value: A833 four-speed/Dana 60 or TorqueFlite/8.75-inch path should agree with table, tag/sheet, axle ratio, and component dates · 1969 Dodge Coronet R/T 426 Hemi
Where to check: Transmission stampings, axle tag/housing, fender tag, broadcast sheet, and inspection photos · 1969 Dodge Coronet R/T 426 Hemi
Common issue: Generic big-block drivetrain or later race hardware treated as original to the car · 1969 Plymouth Barracuda 440
Confidence: documented · 1969 Plymouth Barracuda 440
Correct value: A833/TorqueFlite, Sure-Grip, axle ratio, and drivetrain dates should match the individual car evidence · 1969 Plymouth Barracuda 440
Where to check: Transmission stampings, axle tag/housing, fender tag, broadcast sheet, and inspection photos · 1969 Plymouth Barracuda 440
Common issue: A restored four-speed or 3.55/3.91 rear-end claim copied from another car or auction listing · 1970 Dodge Dart Swinger 340
Confidence: reported · 1970 Dodge Dart Swinger 340
Correct value: D21 four-speed, TorqueFlite, Sure-Grip, and gear-ratio claims should match tag/sheet/drivetrain evidence · 1970 Dodge Dart Swinger 340
Where to check: Fender tag, broadcast sheet, transmission stamp, axle tag, and owner paperwork · 1970 Dodge Dart Swinger 340
Common issue: Later transmission or rear-end swap treated as born-with equipment · 1970 Plymouth Duster 340
Confidence: documented · 1970 Plymouth Duster 340
Correct value: Standard three-speed, optional four-speed, or TorqueFlite path plus 3.23/3.55/3.91 axle records should match the documented build · 1970 Plymouth Duster 340
Where to check: Broadcast sheet, fender tag, transmission stamping where available, axle tag, and restoration records · 1970 Plymouth Duster 340
Common issue: Later transmission or rear-end swap treated as born-with equipment · 1971 Dodge Demon 340
Confidence: documented · 1971 Dodge Demon 340
Correct value: Three-speed manual, optional A833 four-speed, or TorqueFlite path plus axle/Sure-Grip and gear-ratio records should match the documented build · 1971 Dodge Demon 340
Where to check: Broadcast sheet, fender tag, transmission stamping where available, axle tag, and restoration records · 1971 Dodge Demon 340
Common issue: A later gearbox, shifter, gear, or differential conversion represented as original · 1971 Mercury Cyclone Spoiler
Confidence: documented · 1971 Mercury Cyclone Spoiler
Correct value: Hurst four-speed or Select-Shift automatic and the installed Traction-Lok ratio agree with the warranty data, tags, dates, and order history · 1971 Mercury Cyclone Spoiler
Where to check: Warranty data, transmission case and tag, shifter, linkage, axle tag and tooth count, and records · 1971 Mercury Cyclone Spoiler
Common issue: Later transmission or rear-end swap treated as born-with equipment · 1971 Plymouth Duster 340
Confidence: documented · 1971 Plymouth Duster 340
Correct value: Three-speed manual, optional A833 four-speed, or TorqueFlite path plus axle/Sure-Grip records should match the documented build · 1971 Plymouth Duster 340
Where to check: Broadcast sheet, fender tag, transmission stamping where available, axle tag, and restoration records · 1971 Plymouth Duster 340
Common issue: Correct-family replacement components with codes or dates that do not match the car. · 1972 Ford Gran Torino Sport 351 Cobra Jet
Confidence: documented · 1972 Ford Gran Torino Sport 351 Cobra Jet
Correct value: Transmission and axle codes, tags, ratios, and dates should agree with factory paperwork · 1972 Ford Gran Torino Sport 351 Cobra Jet
Where to check: Door label, transmission tag, axle tag, invoice, build sheet, and Marti report · 1972 Ford Gran Torino Sport 351 Cobra Jet
Common issue: A desirable four-speed or 3.55 Sure-Grip conversion represented as factory installed · 1972 Plymouth Cuda
Confidence: documented · 1972 Plymouth Cuda
Correct value: Three-speed, A833 four-speed, or TorqueFlite plus axle ratio and Sure-Grip status must match the car's tags, broadcast sheet, and assembly identifiers · 1972 Plymouth Cuda
Where to check: Fender tag, broadcast sheet, transmission stamping, axle tag and stamp, shifter and linkage, and service history · 1972 Plymouth Cuda
Common issue: A desirable four-speed or 3.55 Sure-Grip conversion represented as factory installed · 1973 Plymouth Cuda
Confidence: documented · 1973 Plymouth Cuda
Correct value: Three-speed, A833, or TorqueFlite plus ratio and Sure-Grip status must match the car's records and assembly identifiers · 1973 Plymouth Cuda
Where to check: Fender tag, broadcast sheet, transmission stamp, axle tag and stamp, shifter, linkage, and service records · 1973 Plymouth Cuda
Common issue: A desirable four-speed or 3.55 Sure-Grip conversion represented as factory installed · 1974 Plymouth Cuda
Confidence: documented · 1974 Plymouth Cuda
Correct value: Three-speed, A833, or TorqueFlite plus ratio and Sure-Grip status must match the car's records and assembly identifiers · 1974 Plymouth Cuda
Where to check: Fender tag, broadcast sheet, transmission stamp, axle tag and stamp, shifter, linkage, and service records · 1974 Plymouth Cuda