GT69 2 Report post Posted January 1, 2017 HI ALL, POSTING FROM THE UK. I HAVE A 69 AND WANT TO USE AN FMX WITH MY 347 MOTOR. WILL THIS WORK OK AND WHICH DRIVE SHAFT WILL I NEED. MANY THANKS 2 Selmadox and Zefevinee reacted to this Quote Share this post Link to post Share on other sites
Max Power 74 Report post Posted January 2, 2017 Sure it would work, not sure why you would want to do that though. The C4 is a lightweight tough little tranny with a host of aftermarket parts available, the FMX is a 50s era design that is heavy and with almost no aftermarket support. Most people convert from FMXs to C4s or overdrives. It took me months to even find a replacement pan for my FMX on ebay. 1 GT69 reacted to this Quote Share this post Link to post Share on other sites
machm1970 180 Report post Posted January 2, 2017 Unless you're getting the FMX for free go with a C4 or AOD. I just swapped my C4 for an AOD and love it. Matt 1 GT69 reacted to this Quote Share this post Link to post Share on other sites
Ridge Runner 1,113 Report post Posted January 2, 2017 I had an FMX in two Mach 1s and i loved them ,a shift kit is as simple as adding a shim .I had both rebuilt from a local shop that does a lot of racing and never had a problem . 2 LindenBruce and GT69 reacted to this Quote Share this post Link to post Share on other sites
Jetnoise 36 Report post Posted January 2, 2017 Adding a shift kit to an FMX is no walk n da park 1 GT69 reacted to this Quote Share this post Link to post Share on other sites
1969_Mach1 333 Report post Posted January 2, 2017 In stock form the FMX is a lot stronger than a C4. I've seen FMX transmissions take a beating and never have any issues. 1 GT69 reacted to this Quote Share this post Link to post Share on other sites
GT69 2 Report post Posted January 3, 2017 the car came with a 3 speed top loader but want to go auto. got the FMX cheap and C4s are hard to get over here. had not considered AOD. IS IT A STRAIGHT FORWARD SWAP ? Quote Share this post Link to post Share on other sites
1969_Mach1 333 Report post Posted January 3, 2017 Don't know what's required for the AOD swap. But I do know in stock original form they are not very good transmissions. 1 GT69 reacted to this Quote Share this post Link to post Share on other sites
