Optimum a/f's for 3.5 race motor
 

What is the optimum a/f for a 3.5 race motor running 46mm webers, ge 60 cams, electromotive hpv-1, 1 3/4" hearders and sport muffler. The dyno is showing 13.9-14.1 from 5,000-6500.

A/F ratio's
 

for safe peak power/torque 13.0 - 13.1 is what we shoot for on a hi compression non turbo, be sure the sensor is reasonably fresh so you get an accurate rate and make sure that its not pulling air before the sensor for a false reading.

Mike Bruns JBRacing

Sorry to hijack, Mike I sent you an email through JBRacing....

I am showing 12.8 on my 3.4 where we made max power. Same reading on both the LC-1's I have mounted in the car and the sensor the shop had in the tailpipe.

how much is this affected by intake temp, or is it at all??

Cheers