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V6 to ls3 Project

This is a discussion on V6 to ls3 Project within the Internal Engine forums, part of the LSx Technical Help Section category; Originally Posted by redbird555 http://www.ls1tech.com/forums/genera...02-f-body.html this a link showing what is all needed for an ls3 swap or l92 swap ...

  1. #21
    Member Jay37's Avatar
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    Quote Originally Posted by redbird555 View Post
    http://www.ls1tech.com/forums/genera...02-f-body.html this a link showing what is all needed for an ls3 swap or l92 swap into a 99-02 ls1 car so basically get what u need for an ls1 swap and then refer to this list
    Or because you don't have any GENIII engine parts, and you want a gen IV what sense would it make to buy genIII stuff?
    I think it would just make more sense to call current performance 727.844.7570. then you will just get the right ecm and wires for YOUR swap. he will probably be some where in the 1000-1500 range, but you won't have any bullshit adapters and such or have to swap out the reluctor wheel. Do it right the first time! after that you just have to worrie about turning your transmission into scrap steel.

    I vote 4l80e. and 9"ford
    Last edited by Jay37; 12-12-2010 at 05:07 PM.

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    Senior Member redbird555's Avatar
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    Quote Originally Posted by Jay37 View Post
    Or because you don't have any GENIII engine parts, and you want a gen IV what sense would it make to buy genIII stuff?
    I think it would just make more sense to call current performance 727.844.7570. then you will just get the right ecm and wires for YOUR swap. he will probably be some where in the 1000-1500 range, but you won't have any bullshit adapters and such or have to swap out the reluctor wheel. Do it right the first time! after that you just have to worrie about turning your transmission into scrap steel.

    I vote 4l80e. and 9"ford
    You need the gen III stuff because things like vvt from the l92 and the reluctor wheel will not work with the factory dash the tach signal from the computer will still be in a 58x format which will cause your tach to go nuts and the vvt system will not work with an fbody dash system. A couple people have done it over on tech and they all had to either delete the vvt or use different gauges, the l92 computer will not work because it simply cant operate the electronics on an fbody. Everyone who has done this uses gen II electronics with the appropriate adapters. VVT is an amazing thing but its just too much of a PITA to make work in a stock fbody id reccommend converting the l92 to an ls3 or just getting an ls3 and the conversion boxes to start with.

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    Quote Originally Posted by redbird555 View Post
    You need the gen III stuff because things like vvt from the l92 and the reluctor wheel will not work with the factory dash the tach signal from the computer will still be in a 58x format which will cause your tach to go nuts and the vvt system will not work with an fbody dash system. A couple people have done it over on tech and they all had to either delete the vvt or use different gauges, the l92 computer will not work because it simply cant operate the electronics on an fbody. Everyone who has done this uses gen II electronics with the appropriate adapters. VVT is an amazing thing but its just too much of a PITA to make work in a stock fbody id reccommend converting the l92 to an ls3 or just getting an ls3 and the conversion boxes to start with.

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    Senior Member redbird555's Avatar
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    By GEN III stuff I mean a computer for an ls1 along with the harness, engine cradle, accessories etc. VVT on the l92 which is a GEN IV engine would require the use of the l92 pcm which cannot be used with the current dash wiring and gauge cluster for an f body.

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    Quote Originally Posted by redbird555 View Post
    By GEN III stuff I mean a computer for an ls1 along with the harness, engine cradle, accessories etc. VVT on the l92 which is a GEN IV engine would require the use of the l92 pcm which cannot be used with the current dash wiring and gauge cluster for an f body.
    I gotcha now..

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    Quote Originally Posted by redbird555 View Post
    By GEN III stuff I mean a computer for an ls1 along with the harness, engine cradle, accessories etc. VVT on the l92 which is a GEN IV engine would require the use of the l92 pcm which cannot be used with the current dash wiring and gauge cluster for an f body.


    K the chassis control module stuff makes sense.

    So I was pondering if it would be cheaper to buy the l92, gut the lifter valley, just like an ls3 is, install cam, good springs and valves... then injectors and intake crossed my mind. And yeah I'm sold on the ls3.
    If you didn't want the the extra power though a mild cam and gutted lifter valley in an l92, could be more wallet friendly. Then would it not be the same as installing an ls3?

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    Senior Member redbird555's Avatar
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    Yes and no i said i dont think so tho unless you got a steal of a deal. L92 used is anywhere from 2k-3500. So lets say
    3k for the engine
    $250 for gaskets
    $1k for cam, springs, timing chain etc
    $100 timing cover
    $400 ls3 intake and injectors/tb
    $400 for dyno tune
    im sure i maybe missing something but that brings the total cost to around 5k to make it into an ls3 a brand new ls3 from gm is $5400 at the dealer by me so idk it doesnt come off as worth it unless your going to build the hell out of the ls3 is it a little cheaper ya would i do it? ehhhhh... if vvt and the l92 could work in an fbody it would be a great option but an ls2 with l92 heads is vastly cheaper than either of the two mentioned and you would only lose 12ci...

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    +1 on the ls2

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    Seems WAY easier.

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    LQ4 is my vote. Followed by LS2.

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    The trans should be just fine, a 4l60E is a 4l60E....

    If its a stick, then its a T-5, which is what the mustang GT uses.

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    Quote Originally Posted by Spikito View Post
    The trans should be just fine, a 4l60E is a 4l60E....

    If its a stick, then its a T-5, which is what the mustang GT uses.
    Wait what? The gt does use a t-5 but fbodys and all new gm cars use a version of the t-56 6 spd. The ls2 is much cheaper although u would still need an intake along with the appropriate extension harness for the cam, injectors and knock sensors the startup cost of an ls2 or lq4 is much cheaper than either of the above.

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    Quote Originally Posted by Spikito View Post
    The trans should be just fine, a 4l60E is a 4l60E....

    If its a stick, then its a T-5, which is what the mustang GT uses.
    ??? 3800 I-II-III uses the 60*v6 bell pattern.. Not the same as the small block v8 t5.. Before that the 3.8 used the BOP housing

    GM 3.8 and 3800 = 2 different engines..


    F-body and FWD series 3800 and f-bdoy/FWD 660 engine patterns

    Last edited by Smittro; 12-15-2010 at 05:44 AM.

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    660 bell.. s10 5spd. All 660's use the same pattern but not all 660's will work with this type of bell BUT they will bolt up..



    BOP (Metric) bell.. Buick 3.8l/Jeep.


    Either way an LSx of any designation will/would eat t5 trannies. None of them are rated over ~ 250 hp crank.. The trany would have to most assuredly need built to hold lsx power..
    Last edited by Smittro; 12-15-2010 at 05:52 AM.

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    Quote Originally Posted by redbird555 View Post
    Wait what? The gt does use a t-5 but fbodys and all new gm cars use a version of the t-56 6 spd. The ls2 is much cheaper although u would still need an intake along with the appropriate extension harness for the cam, injectors and knock sensors the startup cost of an ls2 or lq4 is much cheaper than either of the above.
    the 3.8 uses a T-5, the 5.7 uses a T-56

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    Quote Originally Posted by Smittro View Post
    ??? 3800 I-II-III uses the 60*v6 bell pattern.. Not the same as the small block v8 t5.. Before that the 3.8 used the BOP housing

    GM 3.8 and 3800 = 2 different engines..


    F-body and FWD series 3800 and f-bdoy/FWD 660 engine patterns
    Click for full size
    Click for full size
    yeah, a T-5 wont bolt to a LSx...and i wouldnt put one behind anything LS anyway, but I was referring to more to the autos, both models got the 4L60E, it should be just fine, but then again, you run into problems with bolt patterns

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