ORIGINAL: Grantothismo
arapoda:
For the hardened diffs you will need to shim the left output shaft to put the diff gear closer to the input shaft(little copper shims in the bag). Put in enough that the diff does not move, but not so many that it binds. I have six in mine. I have had mine in for 4 months with no problems. With the old Pot Metal ones I had to repplace them every other race weekend.
The 18 CVR is a great engine and will totally transform your vehicle. The 18SS is a ittle slow off the line, not enough torque as the OS.
When you say "left output shaft" (large gear?) and "input shaft" (small gear?) which do you mean?
I tried to shim the small gear, but the shims are bigger in diameter than the small gear so I don't see how this could shim the gear.
As for the larger gear within the diff case, I placed a shim according to instructions from djheptic on this forum (as posted above).