Mine is 588" 4.5 bore, 4.625 stroke. mopar ported heads, flow 415@800 lift. 760,740 284@.50 roller. 12to1 comp. potrted stage V intake, 2 800 cfm afb's Made 836hp @6700, 730tq @ 5300, My car is all steel,full interior on a 10" tire, & leafs. very nose heavy. so far 1.27 60' 9.53@ 142mph. still not a stellar run.
