Originally posted by LTDScott
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the ZF 5 speed in our car mated up perfect with e36 zf 5 speed shift linkage parts. you only need the selector rod and shift carrier; brand new about $30 each piece from the dealer with 2yr warranty. bushings use some racing ones so they dont move around; the oem ones get pretty soft when hot. Use whatever shift lever you desire; we are using a X5 for super tall effect. z3/z4/e46 are also popular.
our m20 ate 1 g260 (4th gear) in its racing lifetime; nothing else.
if you have the 96mm guibo driveshaft in the car already then it will directly pnp with the ZF 5 speed.
whatever clutch and flywheel can just stay on the engine. we are running a stock m20b25 clutch and flywheel on ours.
the ZF is a better newer box and takes abuse better; its on needle bearings. the case housing is also stiffer
it runs cooler and on ATF oil instead of Manual transmission fluid (although you can fill it with 75-90 if you really desire)
One thing you will find that the 5th gear in the ZF is = 4th in the g260; so you need to watch the top speed on the straights.
for sears and buttonwillow 4,10 was ok. thats what was in the car from m20+260
For thunder hill we went to a 3,91 - more overhead for the front straight. Ours is spinning to 7500rpm
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