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Old 04-22-2012, 03:06 PM
ragee517 ragee517 is offline
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SBC 350 missfire at idle in gear

I have a rebuilt 350, heads have been machined, all 8 exhaust valves have been replaced, the intakes were in good shape, I have a .442 intake and .465 exhaust lobe on the cam, Stock hei distributor, new crank, new .030 over pistons, new pushrods, rockers, and lifters as well. I started it up for the first a few days ago and it was popping out the right side pretty bad. Adjusted all rockers and changed wires, cap, rotor, and even went and bout a new HEI dizzy. Still have a misfire on the passenger side banki of motor and dont know what it could be, I do Know that when it pops back through the exhaust its blowing fire into the pipes, could it just be a bad spark plug, or is it something worse that means tear down and reassemble.
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