Originally Posted by
mberndt
ITR tranny will give the best acceleration everytime, due to the short final drive.
But, I would stay away from the ITR tranny if you'll be using it as a daily driver...
IMO the GSR tranny is the best for DD. It has a short enough final drive for good acceleration, while the longer gears of the GSR tranny will help gas mileage and driveability.
You will already have more Torque available than an ITR so the GSR tranny should complement the motor nicely.
Good luck!
Swap the itr 5th with a gsr 5th gear for highway use, problem solved!!honestly there hasn't been a noticeable difference in my gas mileage at all I would go with a gsr tranny on this motor if he were going with a turbo! But because of the added weight of the ls/b20 crank and rods along with a gsr flywheel, the gsr tranny tends to feel more like an ls tranny that boggs down until about 4000rpm until you hit the TRQ curve and vtec.
The amount of TRQ doesn't really change all that much when you do an LS/vtec! The TRQ curve is the real change that happens! Because of the larger displacement of the LS/b20 crank The TRQ comes on strong at 5200rpm and pulls longer with a vtec head. As opposed to a type R or a Gsr where the tRQ curve comes on later strong at about 6000rpm.
Even if you don't get a ITR tranny at least get a lighter flywheel, about 9lb so you can reach that trq curve faster.