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Which heads for boosted engine?

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Old Jul 15, 2007 | 10:12 PM
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Default Which heads for boosted engine?

Should one go with 72cc heads or 66cc heads or Ls6 heads. i was reading in another post that if you dont run atleast 14psi + 72cc is over kill. Is that true????

I plan on only being around 600rwhp maybe 700 in the far future.
Stock Ls1 for me.
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Old Jul 15, 2007 | 11:02 PM
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I would go with the 72cc heads
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Old Jul 16, 2007 | 01:44 AM
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For a turbo setup, I would recommend going with the 72cc heads to lower that compression as much as possible.
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Old Jul 16, 2007 | 03:55 AM
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I went with AFR 225 72cc on my setup
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Old Jul 16, 2007 | 04:05 AM
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Originally Posted by 2MuchRiceMakesMeSick
I went with AFR 225 72cc on my setup
So did I..
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Old Jul 16, 2007 | 04:28 AM
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I think 225 or more ( 235 , 245) CFM
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Old Jul 16, 2007 | 04:45 AM
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I too am interested in your opinions, I am going to run a stock block blower set up for now until I can afford to build a motor. I thought to just bolt on some 6.0 heads while I was in there changing the cam. Since you can get used one's cheap. This would effectively lower CR and should extend motor life, maybe even warrent 10-12psi. Ok 10psi max, do you think it would be a waste of time to bolt on unported stock 6.0 heads, a guy could always give them a quick hand polish. I know, no digrinder dammit. What do you guys think? Not trying to hijack there bud, just thought this could help a little. If it means anything from my research so far I would definely go 72cc if I were you. Thanks guys!
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Old Jul 16, 2007 | 04:45 AM
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Originally Posted by VINCE
So did I..
Me Too!
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Old Jul 16, 2007 | 05:30 AM
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Same here 225's 72 cc
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Old Jul 16, 2007 | 05:30 AM
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Originally Posted by KWIKKAR
Should one go with 72cc heads or 66cc heads or Ls6 heads. i was reading in another post that if you dont run atleast 14psi + 72cc is over kill. Is that true????

I plan on only being around 600rwhp maybe 700 in the far future.
Stock Ls1 for me.
With your future APS twin turbo, I'd go with the 72cc heads. Bob
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Old Jul 16, 2007 | 06:38 AM
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72cc on my last 317 casting heads and my new heads
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Old Jul 16, 2007 | 08:05 AM
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Ok 72cc heads it is. thanks
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Old Jul 16, 2007 | 08:01 PM
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anyone need 317 heads?
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Old Jul 16, 2007 | 08:13 PM
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i got dart 62cc 9.27:1
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Old Jul 17, 2007 | 10:33 PM
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Originally Posted by KWIKKAR
Should one go with 72cc heads or 66cc heads or Ls6 heads. i was reading in another post that if you dont run atleast 14psi + 72cc is over kill. Is that true????

I plan on only being around 600rwhp maybe 700 in the far future.
Stock Ls1 for me.
That's what I have been told by a guy that has installed hundreds of F/I. He also has a LS7 Z06 running 10.5:1 compression and was making nearly 900 RWHP before he tuned it down to 800 RWHP.
I put some 317 heads on my maggie motor, and lost power. I'm going back with something with some compression. If I was going to run a turbo with lots of boost, then I would go with the larger chamber on a small inch motor.
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Old Jul 18, 2007 | 07:58 AM
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Originally Posted by cablebandit
i got dart 62cc 9.27:1
Must be a lot of dish on those pistons...
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Old Jul 18, 2007 | 09:33 AM
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stock 6.0L 72cc heads working fine for me
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Old Jul 18, 2007 | 09:40 AM
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Originally Posted by cablebandit
i got dart 62cc 9.27:1
Mine are 60cc and similar compression
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Old Jul 18, 2007 | 01:21 PM
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I am going to be using 65cc and getting 8.7:1 comp
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Old Jul 18, 2007 | 02:18 PM
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Originally Posted by Pro Stock John
Must be a lot of dish on those pistons...

-32cc wisecos. I love the Wisecos..Brian Nutter is the MAN and knows pistons inside and out
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