FMXERI am presently restoring a '72 Mach 1 (2F05F154979) with a 302ci 2V and automatic FMX transmission. This trans is factory issued, and I would like whatever information you might have on this transmission. Mainly, I would like to know the spline number and crank pilot. Was there more than one FMX transmission for this model year?
I've been a loyal subscriber of your magazine for years and truly enjoy the magazine. Thanks for your help.Ray WinninghamRawlins, WY
The FMX transmission used in your Mach 1 is the last generation of the old cast-iron Cruise-O-Matic that Ford used since the '50s. It's a very rugged, reliable unit. In fact, its planetary train is the basis for the modern AOD transmissions used today.
The Ford master parts catalog lists a few different FMXs for 1972; however, they are the same basic unit with only valvebody and governor calibration differences. They all have the same number of splines on the input shaft and share a 1.375-inch-diameter crank pilot, common to all Ford small-block engines.
The FMX is rarely used in racing applications, since the lighter and less complex C4 and C6 units are more popular. Contact the folks at LenTech Automatics [(613) 838-5390] for parts or more information. LenTech specializes in Ford automatic transmissions.
Send your questions to:Beyond the Basicsc/o Mustang MonthlyP.O. Box 7157 Lakeland, FL 33807-7157e-mail us at mustangm@emapUSA.com