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will LS3 heads fit?

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will LS3 heads fit?

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Jul 1, 2009 | 05:17 AM

#1

drivelikeIstoleit

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From: River Falls,WI

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will LS3 heads fit?

I think I already know the answer but Im not sure, will LS3 cylinder heads bolt up to an LQ9/LS1 block or would i need an LS3/L76 block for the fitment to work correctly?

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Jul 1, 2009 | 11:01 AM

#2

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From: Lapeer, MI

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LS3 heads are just like the many posts on here involving the L92 version. They can be bolted on 4" and larger bore LS engines, so stock LS1, no.

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Jul 1, 2009 | 06:44 PM

#3

drivelikeIstoleit

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so, hypothetically speaking then, a set of LS3 heads could bolt up to a 370 or 408ci LQ9 and be dropped into a 98-02 f-body? would the same possibility work with LS7 heads? And if the swap worked is the exhaust bolt pattern the same on all LS1/LS3/LS7 cylinder heads?

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Jul 2, 2009 | 05:49 AM

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1) Yes
2) I don't think so, the LS7 is in their own little world
3) LS based engines use the same exhaust pattern so your LS1 headers would fit the LS3 heads

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60, bolt, cylinder, engine, exhaust, fit, fits, head, heads, ls1, ls3, ls7

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