Thread: Problems With Idle

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Originally Posted by Warpig7

I have a .060 350 sbc. 10.1:1 compression. Comp 280 cam. Weiand stealth ram, rblt Holley 570 (64pri, 72sec), an MSD street fire Dist, rblt stock heads 1.94int 1.50 ehx i believe. In a 69 chev c-10 w/ a th350 and 4.11's out back. My stall is at 2800.

Ok here's the problem I've been fightin with: It doesn't like to idle lower than 1000rpm in park. I've gotten it to 900 but no lower. In gear it will not stay running, it'll just stall an die. Also, when i'm drivin if I punch it, it spits an sputters over 3200. And finally, every once in a while it'll pop through the carb and kill the motor- this was worse when i had 87 oct fuel, i have 91 now.

I've adjusted timing (i'm at 8 on idle), tried leaning the carb out, I even changed the int gasket cuz of a suspected vac leak.

Do i need to pull more timing, re-curve the dist, valve lash or is it somethin else?

It'll never run right at 8 degrees intial timing. Crank the timing up to 16 degrees base since the distributor has 20 degrees mechanical advance. That will give you 36 degrees total. Then you need to get a timing wrap and mark your balancer at 36 degrees BTDC.... or get a dial back timing light. You want the full advance of the 36 degrees to be all in by 3000 rpm. Find the combination of springs it takes to get there, try the medium springs. If you don't have the springs that came with the distributor, they are MSD Part No. 8428 http://www.msdignition.com/product.a...479&terms=8428