Thread: im looking for an HD transmission for my 97 gtp!!!!!

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  1. #1 im looking for an HD transmission for my 97 gtp!!!!! 
    GTX Level Member Doug 97 gtp's Avatar
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    i went to the scrap yard and found 2 gtps that were striped of the engine and tranny, but i found alot of 3800 motors with what i think were the non HD trans but im not sure. is there any kind of # i can look up or any distinctions i can see to spot if it is an HD transmission?

    1997 GTP . repainted in jet black with blue pearl. rebuilt motor
    with vs cam ported heads and blower.
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  2. #2 Re: im looking for an HD transmission for my 97 gtp!!!!! 
    SE Level Member
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    autozone?? they go for something in the 2k mark but 0 miles and garenteed no problems with a warrenty is tempting
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  3. #3 Re: im looking for an HD transmission for my 97 gtp!!!!! 
    GTX Level Member Doug 97 gtp's Avatar
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    ya... a 200 dollar transmission sounds alot better and i can tackle my rack as well

    1997 GTP . repainted in jet black with blue pearl. rebuilt motor
    with vs cam ported heads and blower.
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  4. #4 Re: im looking for an HD transmission for my 97 gtp!!!!! 
    Killa Bee Scottydoggs's Avatar
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    cant you get a n/a trans, and swap your hd diff into it? makes it the same thing dont it? i could be wrong tho, the gears may not be right still.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
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  5. #5 Re: im looking for an HD transmission for my 97 gtp!!!!! 
    Moderator DanPrixGTP's Avatar
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    GT's have 3.29 while GTPs have 2.93 i believe
    '97 GTP - Stage 2 Heads, 90# Springs, 1.9 Harland Sharp Rockers, Gen V, 3.0, Intake, N* TB, LQ4, FSIC, 10.5mm Wires, Poly Mounts, SLP Headers, Borla Exaust, Built Trans - SOLD*

    '08 G8 GT - 6.7L 408CI Stroker, 239/254 Cam, Fast Intake, 102mm TB, CAI, Full Exhaust.





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  6. #6 Re: im looking for an HD transmission for my 97 gtp!!!!! 
    GTX Level Member Doug 97 gtp's Avatar
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    correct amundo^^^

    1997 GTP . repainted in jet black with blue pearl. rebuilt motor
    with vs cam ported heads and blower.
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  7. #7 Re: im looking for an HD transmission for my 97 gtp!!!!! 
    Turbo is the way to go. BillBoost37's Avatar
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    The HD and nonHD transmissions are basically the same. The differences come in on the drive/driven sprockets and differentials for the most part.
    Drive/Driven Gears: NA is 35/35 or 1:1 and the SC is 33/37 or 1:1.21
    Differential: NA options (W body only) 3.29 non HD, SC 3.20 HD

    Bigger cars like the Bonne, PA etc had options for 2.86 (I think) and 3.05 also in the non HD trans.

    Try checking car-part.com for all your localish transmissions and best prices
    I drink..so consider that when reading my posts.

    2010 Audi A6 Dual IC's
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  8. #8 Re: im looking for an HD transmission for my 97 gtp!!!!! 
    GTX Level Member Doug 97 gtp's Avatar
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    i picked up a 98 gtp trans with 37k miles on it !!!!!!!! for 400 dollars.

    1997 GTP . repainted in jet black with blue pearl. rebuilt motor
    with vs cam ported heads and blower.
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