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Old 01-26-2009, 11:06 AM
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Looking to swap a ls2 in place of my 5.3 Monte. Can it be done? I have a ls2 out of a 06 Trailblazer SS. If not it will be going in my 81 Monte.
Old 01-26-2009, 11:24 AM
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The crank shaft is 1/2" shorter and the accessory drive is more compact, doubt it will fit w/o major surgery!
Old 01-26-2009, 11:24 AM
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unlikely... unless you want to do a rwd conversion also. the tranny bolt pattern on the ls4 is different. basically a v6 flange welded on. itll end up being too wide or needing custom parts.

boring, resleeving, and stroking the ls4 would be quite a project too. 4 inch bore would be nice.
Old 01-26-2009, 11:33 AM
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no way, that would never fit in our cars...
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Old 01-26-2009, 11:38 AM
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Put it in the 81 monte
Old 01-26-2009, 12:59 PM
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you want more displacement you will just have to punch out the ls4 block
Old 01-26-2009, 06:12 PM
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Thanks for the input, was just wondering if it would fit. Wanted to try something different, it will be going in the 81 MC.
Old 01-27-2009, 03:36 AM
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They have put a ls1 in a older grand prix, they pust 3.8sc engines in sunfires, so it can be done. Just can you do it and it it worth it.




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