[gnx7]

Brian Tooley Racing (ex cylinder head guru for TEA (Total Engine Airflow) can custom grind you a cam for around $400. He knows what he is doing and doesn't do it as a part time gig like some of the others.

Dump those iron heads and shed some weight. If you can get e85 easily than get the compression up to around 10:1 for boost. If you don't plan to run boost.... 91 octane will support 11:1 to 11.5:1 safely and 93 octane can do 12:1. Compression is essentially free power.

5.3 heads are the smallest production chambers; however have smaller intake valves. New Manley oversize s/s valves are only about $120/set plus machine work.

If you don't care how it looks... and have the hood clearance... the truck intake recently went 8.30's@164mph on a stock 6.0 shortblock in a Nova with a turbo. He did this at 3,000ft DA, on his 2nd pass ever I believe, and has more left in the 60' time and also the turbo can be cranked up a bit too. At sea level with better 60' time dare I say it may go high 7's?

Your motor has LS1 style rods good to about 600rwhp before they bend. The newer style LS2 rods can handle around 900rwhp or so before they bend. LS9 gaskets and head studs with enuf fuel and a good tune.... and you are good to go!

http://ls1tech.com/forums/forced-ind...-75-mph-4.html