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LQ4 or LQ9 heads on my LS2

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Old 03-18-2010, 12:40 PM
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Default LQ4 or LQ9 heads on my LS2

I can get a pair or LQ4 or LQ9 stock truck heads cheap from a friend who works at a car recycling center. Which one would be the better head. Also what kind of boost are people putting to a set up like this. I currently run a twin turbo set up with 8.5 PSI on a completely stock motor. Any info at all I can get on this would be great.

mike
Old 03-18-2010, 12:46 PM
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Heads between the 2 are the same. Just make sure their 317 castings.
Old 06-02-2010, 04:40 PM
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lq9 heads for sure way way way way more cfm, jk theyre the same its the pistons that are flat vs dished on lq4 vs lq9.
Old 06-02-2010, 04:57 PM
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with them, same exact head. difference in the LQ4 and LQ9 is the pistons and thats it




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