The wagon has a 750 vacuum secondary holley on it. It is a 462 with Gessler stage 1 heads, poston gs118 cam, and a performer intake. Ignition is a stock HEI. It has always had a real slight hesitation right off throttle. Goes away immediately the further you get into it. I just don't have that snap with throttle response. I have 72 primary jets in it currently. Should I be headed up or down in jet sizes? I am thinking I need more fuel and it may be a sight lean condition, but not sure what jets this combo should have. Thanks for any input. Tony
A jet change will not help you for this. You need to tune your accelerator pumps. It needs a more aggressive pump cam. Try a brown one. By the way, that carb is pretty small for your combo. I'd like an 850 on there.
Shayne, made a ton off difference. I bought the kit and put a brown cam in it. Hesitation is gone. Should I go more aggressive on the acc cam? Would more jetting help? Pulls hard, but curious how far to push it with a stock ignition. Thanks again Tony
Wow, that was quick. What, do you live next door to a speed shop? I can't help you much in the jetting dept. cause my car is quite a bit different than yours. I do all my jet change tuning at the track and jet for best ET. Glad you got rid of the stumble.
Was off today, and the local parts store had them, which shocked me too. Thanks for the help. I will try the trial and error method on jets to see what works. I have been driving it with this motor for almost 2 years and I'm finally tuning it in. It runs so well I just never bothered with it. Take care Tony
