ok this is what I have. 302 roller 1988 e 303 cam holley 570 gtp heads. my problem I just put long tube headers on it and it dont have the power it did. I have my timming set at 12 btc my squirt er is a 35 in the carb.
Headers will lean out an engine. Assuming your '88 has a computer instead of a carby, you may have to find out how to adjust the computer for the change.
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