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As a matter of fact I have a 512 combo going together right now that will have some Stealth heads on it that flow 284-288 on our bench. It will have a hydro flat tappet cam 9.5 to 1 and I expect 550-570 hp @ 5300rpm. J.Rob
Just saw this post and the 512 wound up making a whopping 523 hp and 583 ft.lbs. Yeah--I thought that was terrible and it is, although I think the cam and low compression has a major role in that. At least the 65 year old dude that owns it thinks its awesome. I have built '452 headed 451's that exceeed that with not much work at all. IF you just have to have aluminum heads then go for it, if you want to go fast then talk to somebody that knows. J.Rob
2009 PHR\EMC Competitor
2010 PHR\EMC Competitor
2011 PHR\EMC Competitor
2012 PHR\EMC Competitor
2013 PHR\EMC Competitor
2014 HotRod/EMC Competitor
2015 HotRod/EMC NoShow
2016 HotRod/EMC 3rd place SPEC Bigblock
2018 HotRod/EMC 7th place G3
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