Hey guys, I'm running a 355 cu inch sbc with 9.7 comp ratio, 76cc ported stock heads, Holley Street Dominator intake with 750 Holley double pump mech secondary on top, Comp Magnum 280h running the show. The engine needs to idle at 1000/1100 to be happy. My total advanced timing being 36* makes my timing at idle 14*. None of these are problems until I shut her down. Then she runs on and/or backfires through the carb. I have leaned out the idle to the point that it doesn't idle right. Any suggestions? Changing weights in the dist?
Thanks Bud