Question pertains to 66 Chevy II, 194 6-cyl, 390 cfm 4 bbl holley, crane cams fireball electronic conversion ignition kit. I've been having a heck of a time getting my timing set correctly in this puppy. I keep "tweaking it" but just can't seem to get it right. Getting some sluggish operation and detonation at higher speeds -- 55 to 65 +/-. Here's the gauge at the balancer, I don't know what the A and O are for either. I know this should be basic, but I need some help. (Brain dead)
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- A
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- O
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Also, is 450 to 500 idle rpm good, or should I set it higher?


Breach and Clear