5.3L Heads & Pump gas...
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Join Date: Feb 2004
Location: Lake Charles, La.
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I have a set of 5.3 heads I had milled 30 and seats cut for 2.02-1.57 valves, I'm in the process of cleaning up the bowls then I'll put them together and slap them on. I have a comp cam(I-212, E-218 114lsa) long tubes, no cats, ported MAF, a 160 thermostat, a diablosport programmer for fans, and TR-55 plugs on stock short block. I worry about detonation. Do you plan on running a cooler temp. and plug? I'm just taking precautions cause I've broke ring landings and rings on hypereutetic pistons with about 20 seconds of detonation. Maybe I worry to much.