Do both LQ4 and LQ9 heads offer 317 castings with 72 cc chambers?
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Looking to get 317s to knock down the compression of my blown stock LS6 motor in my Z06, but I want to make sure that i get the right heads that flow as well (or darn close) as stock 02 LS6 heads and of course with the 72cc combustion chambers.
What 317 heads do I need that flow very close to LS6 heads and have the 72 cc chambers (317 LQ4 or LQ9 heads).
What 317 heads do I need that flow very close to LS6 heads and have the 72 cc chambers (317 LQ4 or LQ9 heads).
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Originally Posted by cablebandit
317 is the number you need...it will always be the right head and aluminum ![Happy](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_stretch.gif)
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![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
Originally Posted by MTI 427 C5 Roadster
But do all 317 head casting flow as well as stock LS6 heads or not? ![Happy](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_stretch.gif)
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Ron
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OK, some guys on the corvette forum are saying that 317 LQ9 castings match up peferctly to a 4.0 bore size but I thought they matched up perfectly also with a 3.905 stock bore on a stock cubed motor.
Can we get some clarification please!
Can we get some clarification please!