Plz Help with Trans Gearing

[eschaider]

The TKX and TKO have the same effective fifth gear OD ratio at 0.82 vs 0.81. Gear ratio-wise, the two transmissions are otherwise identical. The .01 difference in final overdrive ratios amounts to a 1% difference in engine rpm. At 2000 engine rpm that is 20 rpm. There is no measurable difference in the driving characteristics of either trans in one of our cars beyond shifting quality. The TKX synchros are what Tremec should have used in the TKOs years ago.

[patrickt]

FWIW, the original was not particularly highway friendly. And you didn't get much of a choice for that 5th gear overdrive.

[patrickt]

davidless -- note the "overall" numbers on the gear ratios from that C&D chart. The number 8.2 has always been kind of a magic target for pleasant street driving. But don't get terribly hung up on any of this, you can always have your gears changed out either in the trans or the rear. Like anything else with these cars, just keep throwing money at them and you'll eventually get what you want.

[patrickt]

As discussed 13 years ago. Note Mike Forte's comments on 1st gear ratios for the street. Toploader trans wr or cr?