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Old October 25th, 2016, 01:01 AM
GBCustoms GBCustoms is offline
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Default Re: Holley 4412 Carb tuning

Quote:
Originally Posted by TJ's GMC View Post
Sounds like a symptom of already mentioned timing, probably not enough advance. Or the carb is set to lean, Careful with letting that thing backfire or you'll blow the power valve if you haven't already.
Yeah thats what i was told so I bought an extra plus the one that is in the rebuild kit. I have the timing right on the balancer mark, but the problem remained when i advanced or retarded a few degrees. So I will do the carb rebuild and then go thru the full holley tuning. Side note, i picked up a 77 C10 for $450 to steal the front suspension and disc brakes off of. also have the ECE drop spindles w/ 6 lug rotors, rear drum rebuild kit, and the 4" drop leaf springs!
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