Aftermarket big block heads
07-20-2012, 09:23 AM
#22
Do you think what I'm saying makes sense? I mean from a simply money standpoint not worrying about every last ounce of hp what I'm seeing is that aftermarket heads are going to cost me about 1000-1500 more than rebuilding Gm rect ports. I'm learning as I go here this is my first big block.
why ask the questions
07-20-2012, 11:24 AM
#23
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Heads play a big part in how much power you'll make. I decided on the AFR 305 with hard coat for salt water use. I purchased them bare and had tthem built. Short block was a 509. Nothing crazy. Those heads flowed awesome 610hp with all accessories ( - water pump) and eddie marine manifolds.
Worth every penny IMO
Worth every penny IMO
07-20-2012, 01:24 PM
#24
+10 on the AFR's. I have had or seen the seats fall out of countless GM heads even after fresh seats have been installed. If your bent on iron get some Dart's. I do have several sets of GM iron rec port heads, 2 pair with missing seats otherwisw very nice flow numbers and 1 set in perfect condition. All have big valves, inconel ex, and have been ported by Spyder Performance that are for sale cheap.
Last edited by Cobra100+; 07-20-2012 at 01:26 PM.
07-20-2012, 01:39 PM
#25
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Im also doing new power at the end of the season, 502's now torn between 509's or 540's with aluminum heads, great thread.
Its a shame you have to put all this high dollar stuff where no one can see it
Its a shame you have to put all this high dollar stuff where no one can see it
Last edited by F-2 Speedy; 07-20-2012 at 01:41 PM.
