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Me Again!

I am running M21, and 4,10 in the rear.

Its the 780 carb, but i∆m running 78 on the primary, and 80 on the secondary now.

What timing would be suggested? i∆ve read abt. people doing sometimes like 42 total.

I once had a L88 with stock manifoilds, and stock type exhaust, once i put headers and some less restrictive system on that engine it was like a diffrent engine.

It also have a tendency to get sligthly hot on the exhaust side, LH side.

Has anyone had any problems with the smog system leaking in, and making the engine backfire?,

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thanks for the replys [img]/ubbthreads/images/icons/smile.gif[/img] [img]/ubbthreads/images/icons/smile.gif[/img] [img]/ubbthreads/images/icons/smile.gif[/img]