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Old 06-15-2011, 08:24 PM
Brent Flynn's Avatar
Brent Flynn Brent Flynn is offline
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Join Date: Jul 2009
Location: Middletown, IN
Posts: 1,431
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It makes no sense to put a good set of heads on a "crappy" set of pistons if you're gonna run it hard... I bet i could do a 400 with TRW's, a set of 16's with new valves and springs, guides and a good valve grind... find the right cam, use a stock intake and i think i would outrun the alum head/cast piston setup.... or run right with it, and i bet my shortblock wouldnt have a huge hole in it after 100 passes shifting at 5800-6000rpms... my point is, its not that expensive to have a good valve grind/new valves/springs done to a set of 16's... you dont need portwork.... also, its not that expensive to build a trw shortblock... I guarantee you if you did that, and had a proper tune on it, it would run in the 12's easily with the gears and everything else you have, as long as you have traction.... i would rather sacrifice a few HP and have a reliable bottom end than have a set of heads you cant even really see the potential in because of your rpm capabilities... not tryin to ruffle any feathers, but, you have a ticking time bomb, unless you gonna shift below 5000 rpms... thus never seeing the benefit of a better flowing set of heads... JMO.... You're gonna lose alot of low end with 260cfm intake ports on a 400...even with 10 to 1 compression

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1968 Firebird 10.817/122.33 3600lbs trw 455, iron d-port heads/SD intake/q-jet, 9" tires 1.440 60ft
1962 Catalina 4100lbs trw 455, iron d-ports,perf RPM, 800holley, 9'' tires,([email protected])1.578 60' Oct 2010!!