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View Full Version : 4speed/5spd hybrid

Givemetorque88
03-06-2008, 01:26 PM
I have a 4 speed from an STD and the gear set and fd from an Si cable trans. What am I going to need to make the 4 speed a 5 speed, basically an Si trans in a 4spd case?
korre07
03-06-2008, 01:30 PM
umm...... i don't think that's possible man... there two different cases, the 4/5 speeds...
transzex
03-06-2008, 02:05 PM
5th gear fork, reverse lockout, shims.
Givemetorque88
03-06-2008, 02:10 PM
5th gear fork, reverse lockout, shims.:done: Thank you
transzex
03-07-2008, 04:03 AM
once you've seen both side by side, it's easy to see the differences.
Givemetorque88
03-07-2008, 09:07 AM
Probably couldn't fit an LSD in it?
transzex
03-07-2008, 04:47 PM
You can, but you don't wanna know the prices.

OPM modified stock diff for road racing is $750, the LAST Quaife 35mm LSD in the USA you might have to pay $1200+ for it.
dehall88
05-21-2008, 03:48 PM
So you're saying that if I had a good 4sp, and the hopefully good internals of a 5sp that blew up the differential and cracked the case, I'd have a decent shot at making a working 5sp???
mike93eh
05-21-2008, 03:51 PM
why not just get a 5 speed and save yourself the hassle??? you can find them real cheap.
dehall88
05-21-2008, 08:26 PM
well, I can't really answer that in any intelligent way. Especially since i've got at least 2 5spd's sitting around. Idk I think it's mostly that i have the parts, and if i pu them together and into a car, then they aren't taking up space in the garage any more. That and I tend to go through transmissions kinda quickly, so spares are always good. Really I'm just curious if I could do it