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Old 03-12-2012, 01:03 PM
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You will never get a clean idle with 14deg of timing with that cam.

Lock out the distributormechanical adv. Use a SPST spark power interupt switch to allow easy starter cranking when hot.
goes on the spark box power on switching wire.

Crank it over 1-2-3 with no spark and throw the switch , it will fire right up.

set the locked timing at 34-36deg BTDC. It does not move with rpm.

The big cam needs this much timing at idle.

Now you can close the carb throttles down .020-.030" exposure at idle and it will idle clean. Power valve should stay closed at idle when in gear.

A 3.5 or 4.5 usually gets that done with a big cam.

just do it. You will see.

I tried to find that cam based on your specs. What cam is it ?

if you want to run 24ish idle timing with a mechanical timing curve limit the mechanical curve travel stop to 10deg.

24 +10 = 34deg at max advance.

Try the simple locked out timing, first.

Last edited by F-BIRD'88; 03-12-2012 at 01:30 PM.
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