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Ls1 VS Lt4

This is a discussion on Ls1 VS Lt4 within the Camaro / SS forums, part of the Vehicle Specific category; MM I have a chance to pick up an Lt4 engine out of 96 Vett , they say they will ...

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    Ls1 VS Lt4

    MM I have a chance to pick up an Lt4 engine out of 96 Vett , they say they will out Rev out pull and out preform the early ls1 engines and then a toss up for the 2001, 2002 ls1 engines because they got a few tricks from the ls2. your thoughts.

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    Im looking to buy as I posted but MMMM could buy a 93-97 fire_ cam and dump an lt4 into it MMMM lt4 11 to one , and red line of 6500! MMM
    Last edited by bikelite; 11-09-2019 at 12:35 PM.

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    What was the real HP of Lt4, I have read something very intro about the lt4 that it responded so Quick and MAXXed it full power that the ls1 was looking DOA! your thoughts.

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    Spaz is My Mentor SMWS6TA's Avatar
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    I would never consider a LT1 or 4 over a LSx engine unless it's the current generation of LT series.


    With just a cam I could out perform the LT1/4 of that generation on a LS1. Even the Gen III and IV 5.3's outperform them.


    What are your goals? It would be easier to make a recommendation based on that.



    Now to be fair there is a LT1 f body that has set the stick shift record as being the fastest manual car. But there is a lot more to getting that goal then just an engine.

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    Junior Member Tomtrimman's Avatar
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    The Ls1 or any LS engine is much better choice than the old lt4 .. sure itís a decent engine that makes okay power but has no where near the aftermarket support the ls engines have .. I wonít dog the old LT engines because they were my humble beginnings however, A 4.8 with some longtubes would make the same power as a lt4 . and you could find them in a junk yard lol

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    Senior Member Whamhammer's Avatar
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    The Gen II LT4s were advertised at 330 hp, so I would say less than 300 rwhp, on a fresh setup.

    The only reason to go with a LT4, is that the car its going into is already a Gen II LT1, and that the cost of it would he less than a conversion to a Gen III/Gen IV.

    A well built TPI engine, with an improved intake and ignition coil system will run all day with a similar setup Gen II.

    A Gen III/IV truck block is going to be way cheaper to get, and upgrade to killer power levels.
    SLP Air Lid/Smooth Bellows
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    356 rwhp, 360 rwlb/tq

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    Senior Member Whamhammer's Avatar
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    Quote Originally Posted by SMWS6TA View Post
    I would never consider a LT1 or 4 over a LSx engine unless it's the current generation of LT series.


    With just a cam I could out perform the LT1/4 of that generation on a LS1. Even the Gen III and IV 5.3's outperform them.


    What are your goals? It would be easier to make a recommendation based on that.



    Now to be fair there is a LT1 f body that has set the stick shift record as being the fastest manual car. But there is a lot more to getting that goal then just an engine.
    Heck, buy putting Long tube headers, y pipe, and cat back, any LS1 would handily out perform even the stoutest factory gen II.

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    Member DarrenWS6's Avatar
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    Quote Originally Posted by Whamhammer View Post
    Heck, buy putting Long tube headers, y pipe, and cat back, any LS1 would handily out perform even the stoutest factory gen II.
    This.

    My '00 LS1 with 853 heads has LS6 intake, EGR/A.I.R delete, 1.75" Longtubes, 3" OR/Y, GMMG catback, and dyno tuned on 93 made 360rwhp & 367ft lbs.
    2000 Trans Am WS.6 M6

    SLP lid & bellow w/ K&N, GMMG catback w/ Corsa Clones, UMI SFC, UMI Adj. Panhard, UMI Adj. TQ arm w/ relocation kit, Eibach prokit, Bilstein HDs, Nitto NT555s, skip shift elim, whiteface overlays, 20% tint, matte black decal/overlays

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