With 35/78 gearing I figured the fdr at 5.41. The 35 pin. was the biggest that would fit and worked ok with GTB (no timing) but the motor never temped over 100 degrees. So I left the gearing the same for my new setup and it seems too work well. Sorry for the bits and pieces of info. guys, I will try to post a complete setup sheet with motor temps. next week after I race.
Tom