My 2004 gtp was running a gt block xp cam p ported heads and sc headers 3 in down pipe cat delete 42lb injectors and 3.25 pulley and zzp programmed lost #4 cyl bought new motor low miles it has standard gtp block 1.9 rockers ported heads and sc was planning on running 42 lb injectors and headers think I could still run 3.25 pulley sense it has lower compression and just 1.9 rockers instead of cam
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