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Original Message
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| I believe the FMX was a 1968-later tranny. |
| By Dave Shoe - 01/04/2004 2:43:43 PM; IP 216.243.176.34 |
I believe the FMX was an FX with beefed up case, and it fell halfway between the FX and MX trannys in case stiffness.
The FMX was actually designed to fall halfway between the C4 and C6 in stiffness, as it became Ford's intermediate transmission size into the 1980s.
The FX stuck around for a few more years, too, but the MX disappeared about 1968 or 1969, being obsoleted by the C6.
The terms FX and MX didn't seem to exist until about 1965 or 1966, probably when the FMX project was started and engineers needed to distinguish between the three.
The F and M appear to loosely correlate to Ford and Mercury, slightly more accurately applying to small engine and large engine applications.
The simplest way to tell the trannys apart is by the tranny oil pan gasket shape. I still can't identify them by eye, but there are enough gasket graphics running around in service manuals or parts manuals or on websites, that you can usually find something to reference.
JMO,
Shoe. |
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