915 trans

[Zman]

Wrenchride,

Which year did you go with and which ring and pinion did you use? I believe early years had 7/31 as well as the 912E (which had a special shaft for t4 engine), but most of the latter models I thought had 8/31. Did you also change the gearing because you picked the wrong year or you need to change any year to work well with Jake's engine, HP/torque range? I haven't talked to Jake other than I was going with a 915 for my roller cam engine. I guess I need to wait until we see the engine specs to know what the best gearing will be, but thought you have already worked through this for your engine. I am going with 17 inch cup wheels, not exactly sure the total height yet, since probably will have 50 series on the back.

My other car has 16 55s in the back with a 914 tranny and the gearing is great for how I like to drive.

Any help is appreciated.