Anybody using air shifting

I’m still shifting off of rpm. The present 904 takes 200 rpm to shift 1-2 and 100-150 to make the 2-3. That’s comparing what I have the shift rpm set at and what the racepak shows for rpm. That can vary as the 727 I was running was 4-500 on the 1-2. That was later dropped to around 2-300 after Pro Trans went through it when I was having other issues. If I’m running nostalgia series races (no air shift) I’ll often “tickle” the 8k high end rpm chip in the 1-2. The damn RPMs just come up so quick! Two step at 4k, 6000 stall. Pretty short window to work with.

In the ole Mirada we started with the shift light at 6k. It’s a race car and rpm’s are king right?? Finally at a test we dropped the shift light to 5500…. Well guess what, car picked up. Later it gained more going from 4.56 to 4.10. That thing was a tractor motor! Funny looking back….. manual shift I was probably actually shifting at 64-6500 rpm. Interesting how much time/rpm can go by from “light on, see light, make arm pull shifter, transmission completes shift”.