Rat, thanks for the reply. I put the 6.5 PV that came in the kit. I'm pretty sure i have a new set of 3.5 but that's a large jump. I can order a set of 4.5s and or 5.5s to have on hand. What would you go to?
Thanks
Rod
I’d put a vacuum gauge on it and drive it and then see how much vacuum you have when it stumbles. If you are at (just guessing here) 16-17 inches of vacuum and it stumbles on tip in then I’d try a power valve that opens sooner. If the vacuum is lower you may need a later opening power valve.