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gotmy said:
Hey does anyone know what the timming should be for a naturally aspirated chevy big block should be???? (1988 chevy 7.4 Liter)
A big block should have a 24 degree thunderbolt box, the shop manual says that you should have 8 degrees of base timing, giving you 32 total. I run 12 base for 36 total and have had no problems, using premium. If in doubt, run with factory or check the plugs for detonation. Oh ya, make shure you have the idle mixture pretty close, on a new rebuild one of my buddies "bench set" the idle mixture for me without me knowing and it took forever to figure out why I couldn't get it to run worth a crap at base timing!
 
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