Thread: Is a 2002 grand prix 3.1 trans the same as a 2002 3.8 motor grand prix trans?

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  1. #1 Is a 2002 grand prix 3.1 trans the same as a 2002 3.8 motor grand prix trans? 
    GT Level Member chicagochuck's Avatar
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    Is a 2002 grand prix 3.1 trans the same as a 2002 3.8 motor grand prix?

    Been looking all over and I'm confused. I know sometimes the plugs are In different spots but I need an idea of what will work. I have a trans from a 2001 se 3.1 grand prix. Just trying to figure out what else it will fit. I take it its a 4t60e?




    But some threads I found say they will not work...
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  2. #2 Re: Is a 2002 grand prix 3.1 trans the same as a 2002 3.8 motor grand prix trans? 
    Moderator dsmuts's Avatar
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    It's a 4t65e It should work just fine.
    98 GTP modded 1.9's, sd headers, 3.4", zzp 1.0 230K miles scrapped.
    04 Comp G zzp stb's, UMI ta's, Speedbuilt sways, bully flo heads, XP, zzp headers, fsic, thrasher shift kit, 60#, 2.6" corsa 2.5", Inferno hood
    01 gt z7 turbo tep trans zzp motor
    08 g8 gt cam exhaust 11.87@118
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  3. #3 Re: Is a 2002 grand prix 3.1 trans the same as a 2002 3.8 motor grand prix trans? 
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    If your engine is the 3.1L it's the 4T60E: http://en.wikipedia.org/wiki/GM_4T60-E_transmission

    From 2000+ it is the 4T65E
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  4. #4 Re: Is a 2002 grand prix 3.1 trans the same as a 2002 3.8 motor grand prix trans? 
    Moderator dsmuts's Avatar
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    97 was the last year for the 4t60 in the gp I thought.
    98 GTP modded 1.9's, sd headers, 3.4", zzp 1.0 230K miles scrapped.
    04 Comp G zzp stb's, UMI ta's, Speedbuilt sways, bully flo heads, XP, zzp headers, fsic, thrasher shift kit, 60#, 2.6" corsa 2.5", Inferno hood
    01 gt z7 turbo tep trans zzp motor
    08 g8 gt cam exhaust 11.87@118
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  5. #5 Re: Is a 2002 grand prix 3.1 trans the same as a 2002 3.8 motor grand prix trans? 
    Moderator dsmuts's Avatar
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    That wiki link is wrong the 3800 gt had the 4t65 since 98
    98 GTP modded 1.9's, sd headers, 3.4", zzp 1.0 230K miles scrapped.
    04 Comp G zzp stb's, UMI ta's, Speedbuilt sways, bully flo heads, XP, zzp headers, fsic, thrasher shift kit, 60#, 2.6" corsa 2.5", Inferno hood
    01 gt z7 turbo tep trans zzp motor
    08 g8 gt cam exhaust 11.87@118
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  6. #6 Re: Is a 2002 grand prix 3.1 trans the same as a 2002 3.8 motor grand prix trans? 
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    The article says 1993-1999 Pontiac Grand Prix "GT" 3800 V6 (L36 Motor). The 4T60 was a terrible tranny btw.
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  7. #7 Re: Is a 2002 grand prix 3.1 trans the same as a 2002 3.8 motor grand prix trans? 
    Moderator dsmuts's Avatar
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    98-99 had 4t65
    98 GTP modded 1.9's, sd headers, 3.4", zzp 1.0 230K miles scrapped.
    04 Comp G zzp stb's, UMI ta's, Speedbuilt sways, bully flo heads, XP, zzp headers, fsic, thrasher shift kit, 60#, 2.6" corsa 2.5", Inferno hood
    01 gt z7 turbo tep trans zzp motor
    08 g8 gt cam exhaust 11.87@118
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  8. #8 Re: Is a 2002 grand prix 3.1 trans the same as a 2002 3.8 motor grand prix trans? 
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    4T65E:
    1998-2003 Pontiac Grand Prix V6 3.1 L/3.8 L
    1997 Pontiac Grand Prix 3.4 DOHC V6

    4T60E:
    1993-1999 Pontiac Grand Prix "GT" 3800 V6 (L36 Motor)

    Up to 99 some cars with the 3.8L had the 4T60E. My buddy's 98 has the 4T60E
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  9. #9 Re: Is a 2002 grand prix 3.1 trans the same as a 2002 3.8 motor grand prix trans? 
    Moderator dsmuts's Avatar
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    the 97 grand prix never had a 3.4. Your friends 98 was probably a early 98 for it to have the 4t60
    98 GTP modded 1.9's, sd headers, 3.4", zzp 1.0 230K miles scrapped.
    04 Comp G zzp stb's, UMI ta's, Speedbuilt sways, bully flo heads, XP, zzp headers, fsic, thrasher shift kit, 60#, 2.6" corsa 2.5", Inferno hood
    01 gt z7 turbo tep trans zzp motor
    08 g8 gt cam exhaust 11.87@118
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  10. #10 Re: Is a 2002 grand prix 3.1 trans the same as a 2002 3.8 motor grand prix trans? 
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    No his was a 3.1L Base model.
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  11. #11 Re: Is a 2002 grand prix 3.1 trans the same as a 2002 3.8 motor grand prix trans? 
    GT Level Member chicagochuck's Avatar
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    Thanks so much guys.. So I guess in my case they are the same.
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  12. #12 Re: Is a 2002 grand prix 3.1 trans the same as a 2002 3.8 motor grand prix trans? 
    I Write E85 Stickies Frosty's Avatar
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    The only 6th gen GP to ever have a 4t60 was the 97 se and gt. Also the only engines were the 3.1 (Bleh) and the l36 (N/a) and l67 (M90 woooo)
    "Lets just throw more boost at it and see what happens" -Frosty
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  13. #13 Re: Is a 2002 grand prix 3.1 trans the same as a 2002 3.8 motor grand prix trans? 
    Turbo is the way to go. BillBoost37's Avatar
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    We recently covered this in another thread and someone posted the links on which was what. 3.1 kept the 60 a lot longer.

    Search on me and learned something
    I drink..so consider that when reading my posts.

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