I originally made this in response to a question on swapping a prelude vtec tranny with lsd into an f22 powered accord for stop and go driving; however, I find the information to remain applicable to other tuning dealing with accords.
P2A5 (94-97 Accord DX/LX)
1st: 3.307
2nd: 1.809
3rd: 1.185
4th: 0.903
5th: 0.685
Final: 4.062
P2U5 (94-97 Accord EX)
1st: 3.307
2nd: 1.809
3rd: 1.185
4th: 0.933
5th: 0.685
Final: 4.062
M2B4 (92-96 JDM Prelude vtec - LSD)
1st: 3.307
2nd: 1.950
3rd: 1.360
4th: 1.034
5th: 0.787
Final: 4.266
the accord transmissions have much longer gearing than the m2b4...higher number shorter gears, lower number longer gears. another option if you are deadset on swapping trannies could be a Prelude Si tranny
M2S4 (92-96 Prelude Si)
1st: 3.307
2nd: 1.857
3rd: 1.320
4th: 1.034
5th: 0.812
Final: 4.266
M2J5 (F22B Equipped Prelude Si)
1st: 3.307
2nd: 1.810
3rd: 1.269
4th: 0.966
5th: 0.787
Final: 4.062
the accord transmissions would yield a total final drive ratio (gear ratio multiplied by the final gear ratio) of 13.4 in first and 7.3 in second, compared to the M2B4's 14.1 and 8.3. The M2S4 comes out with 14.1 in first and 7.9 in second.
now to make these numbers useful beyond straight comparison, you can use this formula to calculate what speed your engine will be at for a given vehicle speed using any of the transmissions and gears:
[(engine rpm / total final drive ratio) / (63,360 / (tire radius x 2 x 3.1416))] x 60 = mph
you can insert the different drive ratios, your specific tire radius, and the speed you want to use in stop and go traffic, then solve for the engine speed
for those that fear the math, this should help:
http://www.fatboyraceworks.com/gears/
Linear Mode
