Quote:
Originally Posted by Ole Don
Actually, after an expensive rebuild, a C4 can handle really a lot of horse power. That plus they use much less HP to turn, so it would be far more efficient. That being said, with all the C 6's out there, it would cost really a barn load of money to make a C4 conversion happen. C 6's came with several bolt patterns on the bell end, be sure you pick the correct one
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actually, a good stout C-4 doesn't need an expensive overhaul to handle pretty big horsepower. I've been rebuilding them for more years than I care to remember and if a 5 clutch direct and 4 clutch forward drums are used along with the big 2nd gear servo, a quality shift kit ( I like Transgo much better than all the others), the van or pick up planets with extra gear strength,a converter that is matched to you car and car's weight, and halving the adjustments for each band (ie. 1 1/2 turns for the low reverse and 3/4 turns for the intermediate, one can have a trans that will live happily for a long time and take much abuse. I recently did a c-4 for a friend that was drag racing and bought the trans from a major builder in Phoenix. It let go soon after installing it and it was a minor repair. I looked at what had been done to the trans and saw how little they did and how MUCH they charged and thought seriously of coming out of retirement if there is that much profit. Whatever you do I would not recommend the FX,MX or FMX transmissions. They are obsolete Ravenaux design boxes left over from the early '50's and ford would need then when demand could not be met by the C-6 or in some cases the lighter duty versions of the C-6. They have dual valve bodies, a cast iron case, and tubes joining the valve bodies that are prone to leak and cause shift problems.