Choosing a Transmisison

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frost0100

Member

Jul 10, 2003

127

0

17

Wilmington, NC

Dec 23, 2006

#1

• Dec 23, 2006

• #1

Well my 68 mustang came (to me) with a 302 and a FMX tranny. I've since then built up a new 351W and am ready to purchase my tranny. So what do you choose? At this point I'd like simpler. So I'm pretty sure I'm dumping the auto - T5 Conversion idea due to the amount of parts I'd need to acquire. C4 sounds the easiest and has the most parts available to hop it up, and I don't really drive on the highway at all. What about driveshaft? Would that have be changed?

 

rbohm

Founding Member

Apr 12, 2002

6,698

550

204

tucson,az

Dec 23, 2006

#2

• Dec 23, 2006

• #2

if the fmx is in good shape i would use it. it is a tough tranny, but as you noted few performance parts are available for it. if you do swap to a C4, it should swap right in place, just make sure you have the right size flexplate for the bellhousing.

 

F

frost0100

Member

Jul 10, 2003

127

0

17

Wilmington, NC

Dec 24, 2006

#3

• Dec 24, 2006

• #3

GREAT NEWS! Finally something that doesn't need 8,000 additional parts.

 

D

D.Hearne

New Member

Sep 29, 2000

11,730

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south louisiana

Dec 24, 2006

#4

• Dec 24, 2006

• #4

I agree too, the FMX is a far better, tougher transmission than a C-4. You can still get shift kits and some converters for them, you just have to look.

 

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frost0100

Member

Jul 10, 2003

127

0

17

Wilmington, NC

Dec 24, 2006

#5

• Dec 24, 2006

• #5

The FMX I had in there, was pretty well beat. I guess I know need to start my search for the "perfect" c4. I do understand that the FMX is stronger, but My car isn't going to be having any crazy amounts of HP - don't get me wrong, I'll have some, just not tons. Enough for a C4 to handle.