what heads on a ls1 427 ?
06-18-2011, 03:17 PM
#1
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what heads on a ls1 427 ? Hello Ls1tech!
Well I have an Ls1 sleeved block with an 427 stroker kit.
and I'm thinking of running an PRC heads.
I had 2 choices...
-PRC LS3 and L92 CNC Ported Heads
-PRC 237cc CNC Ported Cylinder Heads
what heads do you recommend me ?
Thank you and waiting for you'r feedback
Well I have an Ls1 sleeved block with an 427 stroker kit.
and I'm thinking of running an PRC heads.
I had 2 choices...
-PRC LS3 and L92 CNC Ported Heads
-PRC 237cc CNC Ported Cylinder Heads
what heads do you recommend me ?
Thank you and waiting for you'r feedback
06-18-2011, 05:20 PM
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Thank you for the feedback
but why don't you recommend from installing one of those two ?
and what heads do you recommend me ?
I dont want those super-expensive heads like the Trick flows and the AFR's , I just want an middle price ranged heads
but why don't you recommend from installing one of those two ?
and what heads do you recommend me ?
I dont want those super-expensive heads like the Trick flows and the AFR's , I just want an middle price ranged heads
06-18-2011, 06:07 PM
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06-18-2011, 06:20 PM
#9
Trick flows are 12% more cuz they are a BETTER head. I would go trick flow 245 or the new afr 240 head. You get just what you pay for period. People cry about spending but why would you not want the best. Prc is the best budget head out but not in line with tfs or afr.
06-18-2011, 06:27 PM
#10
I just compared Texas' Speed's listing for PRC 237s vs. TEA listing for TFS 235s, which have slightly higher flow numbers on the same flow plate. I am not sure what the rules are about posting prices, but the info came off both sponsor websites. Difference was +11.4% for the TrickFlows. (I have always been confused when folks say PRCs are cheap and Trickflows are expensive. The listed prices, on any given day, put them in the same price category as far as I am concerned.)
06-18-2011, 06:55 PM
#11
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Neither LS3 or LS7 heads will work on a LS1 block. If I may recommend Dart pro 225cc heads will work great. They make tons of hp and tq and don't cost an arm and a leg. JMHO
06-18-2011, 08:05 PM
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Thanks all! Well i talked to Brian@speedinc. , he said that they've tested the PRC's 237 in an 427 which worked very well. It confused me because the heads have the bore of 4.030 while the 427's are known as an 4.125 bore. but he said that the 237's are made for the 427 but not written in the website
Thanks Darkman I really appreciate you'r feedback , and thanks all
Thanks Darkman I really appreciate you'r feedback , and thanks all
06-18-2011, 09:22 PM
#14
they was a dyno test in GMHTP ,which included the L92 head and a PRC head.maybe you can do a search at that magazine website .I remember the L92 head flowing pretty good numbers for a factory piece.and it mite be the lowest cost head ($375)to some what meet you flow needs.what bore and stroke are you running?TSP sells L92 heads and you mite ask around in the gen 4 section.
