I have a402 with and performer Intake holley 670 street avg on it. can any body please give me a starting ponit on the jet size I think they are 65 in it now. I know you alittle rich then drop it down 2 but where to start LOL
What Mike said, something is out of the ballpark here. Do you have 12.5:1 compression or something? Even if you have 12.5 the 110 should cover it no sweat. What's the big disconnect? Wrong gasoline in the tank? timing marks goofed up? advance mechanism in the distributor boogered? adding jet is not a fix for the problem, it's a cover-up for the real problem.
This is an older thread, you may not receive a response, and could
be reviving an old thread. Please consider creating a new thread.
A forum community dedicated to Chevrolet Chevelle owners and enthusiasts. Come join the discussion about restorations, builds, performance, modifications, classifieds, troubleshooting, maintenance, and more!