by johnj » Tue Nov 07, 2017 3:57 pm
The original kelmark setup has the engine running in the standard ( for a SBC, and most others) rotation. This turns the corvair trans and ring and pinion in the opposite way it was intended to run. By running the ring and pinion backwards you are putting the power to the "coast" side of the gears, shortens the life as they were never intended to run this way full time under power. The reverse rotation gear set was designed to fix the problem, but the engine then has to turn the opposite way. Most kelmark conversions ran the engine in the standard rotation, mine did, never made the swap to the reverse R&P and reversed rotation engine setup. A lot of guys pump extra oil to the stock ring and pinion and say they live. Kelmark setup gives you a lot more room in the car, if I didn't plan on a lot of HP I would not change mine, gives plenty of seat and leg room. There is a lot of info here on the c5 diff setups, auto and manual.
John Albera
Mohnton, Pennsylvania