Well, here's my take on it, if you will be driving it on the street mostly, you won't want rectangle port heads as you will hardly get up to the rpm's to use the power, so with that being said, you can also get a set of some GM heads, open chamber 781's(last 3 digit's in the casting number) or 049's and put the bigger valves in them, spend more cash and have the heads worked fairly well, and stick in a cam in the 550-600" lift range and a good hyd. roller would work great. You could use a Scat, Ohio Crankshaft, Eagle or GM cranks to hold this power, change the main bolts to ARP hardware and the head bolts also, keep the compresion at 10:5:1 or less and you can run pump gas and have a great time for a good price every weekend of cruzin. Good luck.
ElkyJohn
Originally Posted by rapedape
HI GUYS! FIRST OFF THANKS FOR THE ADVICE, I REALLY NEED SOME :lol: I HAVE A 454 OUT OF A 2000 CHEVY TRUCK CASTING 10237297 I WAS THINKING OF GOING WITH A 496 BUILD DOES ANYONE KNOW ANYTHING ABOUT THESE BLOCKS?? WILL THIS BE A GOOD BLOCK TO USE. ITS GOING INTO A STREET CAR BUT I'M LOOKING TO GET ANYTHING IN THE 500 HP ++ RANGE IF POSSIBLE?? IF SO DO ANYONE HAVE ANY PARTS RECONMENDATIONS. ALSO I WANT TO GO WITH SOME AFTERMARKET HEADS. ANY HELP WILL BE APPRECIATED GREATLY THANKS!!!