240sx S13 S14 S15 Transmission specs

[puerkone]

Hi I am having a hard time trying to find out the transmission gear ratios between all of these models. I googled it and all I can get is the engine specs of these car. I want to find out the exact numbers from first gear to last gear. Also, I am trying to find out how different are between the S13 KA24E, S13 KA24DE, S14 KA24DE, S13 CA18DET, S13 SR20DET, S14 SR20DET and S15 SR20DET transmissions. Which one from all of these engine has the strongest or which transmission will get you farthest? are these transmissions interchangeable? I heard all of the transmissions fit one another. So I want to use the strongest transmission in my KA24DE and my SR20DET but most importantly want to look at the specs from all transmissions. Thanks.

[puerkone]

any comments?

[enterpricorp]

The sr20det and ka24de (91 on 240sx) are both fs5w71c transmissions, but the gear ratios differ slightly. You can find the gear ratios on the web. They're both stronger than the s15 6 speed. There's all kinds of replacement gearsets available for these transmissions to fix weak gears like 1st and 3rd. OSgiken and a couple other places make replacement gearsets.