I have a 65 Elky that I threw a 350 in. It has a Holley Street Avenger 570 CFM carb on top of a Holley Dominator intake. Most everything else on the engine is stock, but I do have a RV cam in there.

When I mash the gas, or even if I'm cruising and give it a little juice, there's a slight hesitation, coupled with a feeling like the engine is about to cut out, and then it roars right up. I'd say the hesitation lasts less than a second, but it's still there, and it's annoying.

Any tips anyone?

I've checked the timing, set the mechanical advance on the distributor, checked for vacuum leaks, and set the idle / idle mixture adjustment.

Thanks!

make sure your vac. supply to the dist.is on a part throttle vac. port not full vac.engine will stumble when vac falls off timing retardes...also check the accelerator pump adjustment :D

If you know anyone with any jets try to jet it up a bit. I was having the same promlem, jetted up a few jets and bingo smooth acceleration. smile.gif