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LS2 to LS7 conversion kit?

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Old Nov 5, 2006 | 05:49 PM
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From: Tinker AFB
Default LS2 to LS7 conversion kit?

Does such a thing exist? I guy I know claims that he put a LS2 with an LS7 conversion kit in his truck. To my knowlege the LS7 is a completely different block from the LS2.
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Old Nov 5, 2006 | 07:05 PM
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Yes, the blocks are different to some extent. I'm not sure what a conversion kit would entail, besides an entire engine swap!
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Old Nov 5, 2006 | 08:10 PM
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The LS2 is a 4" bore and the LS7 is a 4.25" bore. LS7 heads will not fit on a ls2. However ETP makes a small bore LS7 head that will fit a 4" bore.
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Old Nov 5, 2006 | 08:26 PM
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Originally Posted by LS2 Pontiac GTO
The LS2 is a 4" bore and the LS7 is a 4.25" bore. LS7 heads will not fit on a ls2. However ETP makes a small bore LS7 head that will fit a 4" bore.
LS7 is a 4.125 bore. Probably missed the "1" key. The LS7 heads will fit any type LS? engine, just gotta have the right machining done (ie: pistons). They will just work better with a bigger bore.


.
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Old Nov 5, 2006 | 08:27 PM
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Originally Posted by Quickin
LS7 is a 4.125 bore. Probably missed the "1" key. The LS7 heads will fit any type LS? engine, just gotta have the right machining done. They will just work better with a bigger bore.


.
opps missed one key , thanks for the correction.

Yeah the heads can fit any LSx block, I just assumed he was talking about stock bore size.
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Old Nov 5, 2006 | 08:38 PM
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From: Tinker AFB
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I have no idea what if anything is done to his truck. What he said was he swapped a LS2 motor with a LS7 conversion kit into it. I've never heard of heard of anything like that.
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