rays69mach1 11 Report post Posted September 7, 2016 Looking for a replacement trans for my 69 351W Mach1. The motor is stock so I don't need anything stronger than OEM. Anyone here ever bought a C4 from TCI? Any other trans rebuilders out there for a C4? Thanks, Ray 1 Xde4hewkew reacted to this Quote Share this post Link to post Share on other sites
ashleesmach1 28 Report post Posted September 8, 2016 Don't forget you may have to change the driveshaft too. Go with Aluminum. You'll love it ! Quote Share this post Link to post Share on other sites
rays69mach1 11 Report post Posted September 8, 2016 I'll keep that in mind about the driveshaft. Sure wish I could get some feedback about C4 trans rebuilders. Ray Quote Share this post Link to post Share on other sites
408frank 1 Report post Posted September 9, 2016 If you already have a stock C4 from the 69 have your local trans shop, one with a track record, rebuild it but consider moving to a 70 box, not much in cost, and add some stronger compenents like red race frictions, kolene steels, kevlar lined intermediate bands, 26 spline 4340 steel billet input shaft, shelby "C" ratio 6061aluminum billet servo,etc. and a strong double weld flexplate. Also consider a trans cooler and a larger pan like a 7 qt. I use this setup in my 69 Mach I 408 stroker that turns 11 in the quarter at 121MPH and it seems to hold together. My experience with TCI has always been great with flexplates and torque converters. Quote Share this post Link to post Share on other sites
rays69mach1 11 Report post Posted September 9, 2016 Thanks for the feedback about TCI. I haven't found a local shop with any experience rebuilding an older C4. They are willing to do it but have never done one before. Rossler Transmission is just down the road from me but they don't do C4s at all so buying one from TCI seems to be my best bet. Ray Quote Share this post Link to post Share on other sites
