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    How do I get the travel I want with a FWD GM 3.8l V6?
    #1
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    So a local has a 2003/4 Pontiac Grand Prix that runs and drives, but is rather a complete wreck and disaster, for $400. I am rather fond of that engine and am trying to figure out how I can use it with my chassis (Roketa GK-34).

    The problem that I'm having is that the transmission outputs are nearly as far apart as my trailing arms. My current track is about 56", 8" narrower than the Grand Prix's and the car uses these super short stubby axles.

    Is there some magic way of making this transmission work with my 10" of travel in the back without having to make the rear eight feet wide?
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    Re: How do I get the travel I want with a FWD GM 3.8l V6?
    #2
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    Don't remember the thread, but there was a 4 wheeler with a swing arm, and A arms.
    Last edited by LIDUNO; 04-06-2017 at 12:40 PM.
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    Re: How do I get the travel I want with a FWD GM 3.8l V6?
    #3
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    I couldn't find it, but imagine your engine, and transmission, on a swing arm. The A arms would move and so would the swing arm.

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    Re: How do I get the travel I want with a FWD GM 3.8l V6?
    #4
    Bend-Tech Dragon Master
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    They just don't go with minis, Size-weight-gearing.
    You don't want to deal with 800lbs of motor and trans on a suspension arm.
    JGSFAB- CNC'n everything I can. What to see more?
    www.facebook.com/jgsfab or jgsfab on instagram.
    And don't forget jgsturbocom on youtube
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    Re: How do I get the travel I want with a FWD GM 3.8l V6?
    #5
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    Yeah the swingarm/a-arm combo I don't think would work here. Or at least not ideally and it wouldn't allow me to use my shocks.

    I think I have to abandon the idea by weight alone. As much as I like the 3.8l it is a 690lb long block, plus the weight of the transmission. I wouldn't be able to use it without EXTENSIVE redesign of the rear suspension and chassis. I need to focus on finding and blowing the Geo G10/G13 as I originally planned.
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    Re: How do I get the travel I want with a FWD GM 3.8l V6?
    #6
    Senior Member deaner's Avatar
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    The engine is not the problem, it's the automatic transmission. They wrap around the engine and are very wide where the CV shafts attach. Go with a manual transmission. A Muncie 282 or an F23 will bolt to the 3800 with minimal work. These trans are very narrow and have many shafts of differing lengths that "snap" right in.
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    Re: How do I get the travel I want with a FWD GM 3.8l V6?
    #7
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    It became less about the width of the transmission and more about the weight.

    It's all good, though. I have a '91 Geo G10 now, though, and I plan on running about 10psi on it...that'll get me around the horsepower I want and it'll be an easy engine to cram in the chassis.
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