Thread: Engine swap

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  1. #1 Engine swap 
    SE Level Member busagtp's Avatar
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    Hey Gp world, i need another engine for my GTP Comp G, I was wondering can i replace my series III with a series II and just switch the upper half and all electronic components? I think the 2 engines are the same besides the electronic throttle control and aluminum upper half.
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  2. #2 Re: Engine swap 
    The Blue One blueguy's Avatar
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    As long as you get a L67 bottom end...yes. The L36 bottom end is higher compression...if you have the means of tuning it though...I'd put the higher compression in there and make it run like a bat outta hell. If not...a L67 Series II will work just fine.
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  3. #3 Re: Engine swap 
    SE Level Member busagtp's Avatar
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    by the way its an 2004
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  4. #4 Re: Engine swap 
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    thats implied by saying you have a comp g.
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  5. #5 Re: Engine swap 
    I live here. SlowNA06's Avatar
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    As long as you keep the compg's blower, it makes sense to me.
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  6. #6 Re: Engine swap 
    Donating Users ninnyGTP's Avatar
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    Unless you found an L67 for a steal, I wouldn't do it.. You can pick up a low mileage L32 for under 1k nowadays
    98 Grand Prix GTP L32, GenV, n*, 3.2", 1.9 rr's, 3.29 gears. All that jazz SOLD
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  7. #7 Re: Engine swap 
    DUI BABY Bio248's Avatar
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    Quote Originally Posted by ninnyGTP View Post
    Unless you found an L67 for a steal, I wouldn't do it.. You can pick up a low mileage L32 for under 1k nowadays
    $1k is a lot for a dime a dozen motor.
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  8. #8 Re: Engine swap 
    Donating Users ninnyGTP's Avatar
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    Keep in mind, these are salvage yard prices. I payed 900 for both the L67 in my SE and L32 in my GTP. L67 had 80k, L32 40k. I'm sure you east coast guys have better pricing as you're in the W-body meca. What i'm trying to put out there though is the L32 is coming way down in price and more than likely you can even pick up a short block for a couple hundred bucks if indeed that's all you need.


    Lower mileage for the same price is what I mean to say
    98 Grand Prix GTP L32, GenV, n*, 3.2", 1.9 rr's, 3.29 gears. All that jazz SOLD
    99 Mustang GT Steeda UDPs, 3.73s, Pypes O/R xpipe, Accufab plenum, Steeda CAI, B&M ripper, MHS s2 cams, 10.5:1 compression (290whp/310wtq) SOLD
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  9. #9 Re: Engine swap 
    youtu.be/xhrBDcQq2DM FoSHO99's Avatar
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    The 04+ fuel rail is also returnless so you should be good if your swapping the top.
    2001 GTP PT61 Turbo, E85, Stock Motor
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  10. #10 Re: Engine swap 
    SE Level Member busagtp's Avatar
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    Ok thx fellas, i just bought a used series 3 for $850 so imma stick with this one and just hook the old one up because it only needs bearings.
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