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Hello,
I have a chevy with a 327/403hp the cam is adv. 3 degs solid cam ,trick-flow 2.02 alum heads, Hei ing. edelbrock 1406 carb I am unsure how to set the timing at idle it is at 10 deg. it seems to be holding back I also just picked up a new adjustable timing light at sears. Can someone please tell me how to adjust the timing and what deg. what rpm
There is a bolt on your intake manifold, near the base of the distributor. Loosen the bolt, then rotate your distributor. If you're adding advance, you will hear your idle pick up. The best way to set timing is to set your idle where you want it, hook up a vacuum gauge, adjust distributor until you get maximum vacuum, reset idle, tighten distributor, etc... Or, since you just bought yourself a timing light, 12 degrees is a good start, or just advance it until you hear knocking or preignition. Then back off a few degrees. Reset your idle, and drive up a big hill in a high gear to make sure you don't preignite. If you do, retard the timing a bit.