Head ???

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Aug 2, 2012 | 06:15 PM

6togo

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From: Harford co. MD

Head ???

Dumb question here but are all the LS heads the same diamentions on the outside? I havea ls1 block and need some heads for mock up purposes. The
ls1 heads are cheap but i am going to be running a LSX block with LS7 heads and just want to be sure all the outside specs are the same!

Aug 2, 2012 | 06:32 PM

I8UR4RD

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From: Bama

I dont know about the outside, but i know the ls7's are not cathedral like the ls1 heads.

Aug 2, 2012 | 10:08 PM

6togo

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From: Harford co. MD

I know all the ports and valves sizes are different just did not know if the physical size is different so i dont mock something up with say a LS1 head and use a LS7 head that a different size.

Aug 3, 2012 | 02:17 AM

bww3588

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From: Chillicothe/Lima, Ohio

Someone correct me if I'm wrong but I believe ls7 heads have a thicker deck making them a tad taller. Not sure if it would be enough to make a difference in your mock up or not.

Aug 3, 2012 | 02:18 AM

bww3588

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From: Chillicothe/Lima, Ohio

I know my ls3 heads are identical to my ls1 heads aside from the valves and ports. But I've never pissed around with ls7 heads tho.

Aug 3, 2012 | 01:18 PM

markbsae

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From: Bakersfield, CA

The ports are different and thus the bolt pattern is different enough to prevent a ls1/2/3/6 intake from fitting. The heads are a little taller if sitting on the deck.