I have been off site for a while but recently picked up a 27 tall t coupe project and a model t frame and have a front axle off either my 41 or 47 ford parts cars. I want to run a 9" rearend and I have a lead on a 71 cougar which I think has the 9" rearend. does anyone know if it is a 9"? thanks for any help.
If you can not get to the two bottom nuts to remove the 3rd member with a socket and extension, you have a 9". If all of the nuts can be removed with a rachet and socket extension, you have a 8". I believe the cougar could have had either one, depending in engine. Either one will be the small axle bearing.
I'm sure other folks have a better copy than this, but here for starters is a list of Ford 9" diff widths and models they were in. Good luck with that and keep us up to date on your build. There is also a T coupe thread running where folks have added a picture of their project... Rear End Widths Ford Outside Width Year Model 56.50 1969-1977 Maverick 8" 57.00 1974-1978 Mustang II 8" 57.25 1957-1959 Ford, Ranchero, Station Wagon 57.25 1965-1966 Mustang 58.00 1966-1977 Bronco 58.00 1964-1965 Falcon 58.00 1977-1981 Granada/Versailles 58.50 1977-1981 Versailles 59.25 1967-1970 Mustang, Fairlane, Comet, Cougar 60.00 1967 Cougar 60.00 1958-1960 Edsel 61.00 1964-1971 Ford Full Size 61.00 1949-1951 Mercury 61.25 1957-1972 Ford F-100 Pickup 61.25 1960-1964 Ford Full Size 61.25 1971-1973 Mustang 61.25 1967-1973 Torino, Ranchero, Fairlane 63.00 1970-1979 Ranchero & Torino 63.00 1972-1979 Ford Full Size & Intermediate 63.50 1967 Fairlane (Coil Springs) 65.25 1973-1986 Ford F-150 Pickup 65.25 1978-1986 Bronco 65.25 1973-1986 Ford Van 3/4 Ton 68.00 1972 Ford Van 3/4 Ton 69.25 1977-1986 Ford E-150 Van
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