Trans Dilemma: c4 w/ Gear Vendors OD or 4r70w?

[zombiekiller]

First things first: How does the C4/converter/3.50 gear feel to drive? Is it sloppy? Are shifts happening at the right time? Have you looked at the trans temps? If it's working well, and you like a multi-stage approach, go with the GV. You can always hang the GV off the 4R70W later or flip it. People are always looking for used GV bargains.

If, however, the current combination is all wrong anyway, the GV will accentuate those shortcomings in the higher gears. A well built, nicely calibrated 4R70W with lock up will make for a truly enjoyable TT cruise missile. Picture a billet lock up converter with oversized lock up clutch (a single disc in your case) and a custom TT stator. The right E-trans combination is a beautiful thing.

I don't have any issues with the current set up, other than the rpms are too high at cruise and the gas mileage is single digits. The shifts are nice and crisp, trans temps are good, even with only using a framerail type cooler( its a 24" wide one that i have mounted to the bottom of the radiator support and I will also be modifying the front bumper to duct to it more directly. )

This is kind of why I'm having a dilemma. It's coming down to e-trans/paddleshift/lock-up vs C4 that i've got a fair chunk of cash sunk into/6 speeds.