GM TRANSMISSION INFORMATION
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  1. #1
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    Default GM TRANSMISSION INFORMATION

    Post All Critical Info And Links Here
    Transmission Dimensions







    Powerglide Ratios:
    1st 2nd 3rd 4th rev
    Powerglide 1.76/1.82 1.00 -- -- 1.76/1.82

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  3. #2
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    Identifying GM Automatic Transmissions

    Sometimes it’s easiest to identify an automatic by its pan shape. Here, from left to right are the pans for the TH700-R4, the TH200-4R, the TH400 and the TH350.



    1 Aluminum Powerglide 14 bolts
    2 TH200 Metric 11 bolts
    3 TH350 13 bolts
    4 TH400 13 bolts
    5 TH200-4R 16 bolts
    6 TH700-R4, 4L60, 4L60E 16 bolts
    7 4L80E 17 bolts

  4. #3
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    Transmission Guidelines


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    Identifying a TH200-4R vs. TH200


    The TH200-4R^^^ is identified by 10 bolt holes and 2 dowel-pin locator holes on the universal bellhousing. It has a dual bolt pattern for both Chevrolet and BOP (Buick, Olds, Pontiac) applications. The TH200 has only six bolt holes and 2 dowel-pin holes.

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    try this link for links to some more info
    http://www.hotrodders.com/forum/hotrodders...rend-74799.html
    friends dont let friends drive g-bodys

    http://www.layitlow.com/forums/index...owtopic=162717
    great deals on motocross parts
    http://www.privateerconnection.com/index.htm

  7. #6
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    Transmission Bolt Patterns:

    GM rear wheel drive transmissions were cast with a number of different bolt patterns to mate to various engines. There are three common bolt patterns. In many cases, a transmission with one bolt pattern will not mate to an engine with a different bolt pattern without the use of an adaptor.


    Above is the "Chevy" Bolt Pattern. The high center peak at the top is it's most noteable feature. Transmissions with this bolt pattern will mate to most Chevy engines (most front wheel drive engines used a different bolt pattern not illustrated here).

    __________________________________________________ __________________



    Above is the "BOP" (Buick-Olds-Pontiac) Bolt Pattern. The depressed flat at the top is it's most noteable feature. Transmissions with this bolt pattern will mate to most Buick, Cadillac, Oldsmobile and Pontiac engines (most front wheel drive engines used a different bolt pattern not illustrated here).

    __________________________________________________ __________________


    The third common bolt pattern is what is often refered to as the "Dual" Pattern bolt pattern. Or sometimes called the "Universal" pattern. Transmissions with this pattern will bolt up to engines with either of the two patterns above eliminating the need to use an adaptor plate.

    The lower two bolts and the locating dowels are in the same locations for both the "Chevy" and the "BOP" bolt patterns. The locations of the upper four bolts is different. The "Dual" takes advantage of this and provides for mating to either pattern.

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    damn this is a good post.


    for crenshaws finest
    I don't apologize. I'm sorry, but that's just the way I am.

    59 chevy truck-hot stuff
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    San Antonio Rollerz Only c. 2003



  9. #8
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    G-Body Speedometer Gear Information:

    http://tech.oldsgmail.com/speedo_gears.php

  10. #9
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    Originally posted by hot$tuff5964@Aug 4 2006, 07:03 PM~5905316
    damn this is a good post.
    * for crenshaws finest
    Thanks brother...

    Theire's A LOT of things LIL is lacking that we really need to know or change. One of those is our lack of resources for mechanicle information. I'm just trying to do my part. I just hope these guys don't mess this up.

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    A Transmission Swapping Guide for Early Chevrolets

    http://www.chevyhiperformance.com/techarti...ion_swap_guide/

    This has to be one of the best tech articals I've ever read.

  12. #11
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    Chevy High Performance Magazine Tech Articals (Transmission)

    http://www.chevyhiperformance.com/tech/eng...sion/index.html

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  14. #13
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    Almost Everything You Need To Know About The GM TH 350:

    http://www.jeeptech.com/convtrans/gm/gmth350id.html




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    What size rear end? 64 Impala with 700R4

    http://www.jalopyjournal.com/forum/s...ad.php?t=79089

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    Why wont my th350 shift out of first gear?
    Maecy Jewel Murray you will not be forgotten 9/8/05-1/24/06
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    iwa swondering if somone would have a answer to my question, i have a 85 cutlass that im swapping a chevy 350 engine into it, i have a th-200 so i will need
    a adapter, but my qustion is do you know what crossmember iw ill need to place the tranny mount, and if i will need a different drive shaft.
    thanks in advance


  18. #17
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    GM 700R4 Transmission Information.
    This was a good, interesting read

    http://www.smokemup.com/tech/700r4.php

  19. #18
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    Originally posted by mycutty@Aug 4 2006, 08:19 PM~5905548
    iwa swondering if somone would have a answer to my question,* i have a 85 cutlass that im swapping a chevy 350 engine into it, i have a th-200 so i will need
    a adapter, but my qustion is do you know what crossmember iw ill need to place the tranny mount, and if i will need a different drive shaft.
    thanks in advance
    You dont need a tranny mount-bar if all you're changing is the engine. Just make sure the trannys bolt pattern is compatable with that SBC350. See my pics above^^^

  20. #19
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    Originally posted by layinlowusosixfo@Aug 4 2006, 08:17 PM~5905533
    Why wont my th350 shift out of first gear?
    Check you're linkage first. If thats not it, it's something internal and you'll probably need an overhaul.

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    I hope it doesnt need an overhaul........I just picked it up from the tranny shop

    Originally posted by Crenshaw's Finest@Aug 4 2006, 08:27 PM~5905574
    Check you're linkage first. If thats not it, it's something internal and you'll probably need an overhaul.
    Maecy Jewel Murray you will not be forgotten 9/8/05-1/24/06
    I love you so much
    Indyzmostedhated 63 buildup
    www.myspace.com/audiosourceinc
    www.audiosourceinc.com

    BIG I keeping the Clean Lowriders on the streets
    Im not trying to build the best 63 out there....Just the best one I can

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