GM Transmissions

Models and Pricing



Our most popular performance transmission, we have been modifying and improving this trans since it was first introduced in the early 80’s. We offer several versions of this trans for applications up to 575 horsepower. This trans has a low first gear ratio of 3.06 to 1 and an overdrive ratio of .70 to 1 which translates into stump pulling low end and a 30% reduction in cruise rpm.

This trans was built with a Chevy only bolt pattern, but we have a package for Buick, Olds, Pontiac, and Cadillac people so you can enjoy the benefits of this excellent transmission too.

We also provide a custom rebuild service for those interested in keeping the original trans but need an upgraded version to handle additional power mods. Call for more details.

Overall Length 30 3/4”, Face to mount distance 22 3/8”, Ratios: 1st 3.06, 2nd 1.63, 3rd 1.00, 4th .70

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  • #PTPCS2004R/700R4


    COMPUSHIFT Mini for GM 700R4 and GM 2004R

  • #PT700R4HD


    Our heavy duty replacement model for vehicles originally equipped with the 700 or those wanting to upgrade to an overdrive with a maximum of 325 horsepower. This model features over 25 upgrades and modification to improve durability and performance and comes with our heavy duty lock-up torque converter with stall speed up to 1800 rpm.

  • #PT700R4ZZ


    This is a special edition trans we have developed to use with the very popular and powerful ZZ4 crate engine. This transmission is calibrated to bring out the best of this engine's power and torque curves and includes out ZZ4 Torque-Max torque converter. If you are considering this engine for your car or truck this trans will bring out the best in its performance and economy.

  • #PT700R4RJ


    This custom version of our 700 is modified to respond to the tremendous torque output of the Ram-Jet engine.  A combination of the durability and performance mods of our ZZ and RV transmissions with stall and speed shift calibrations matched to this awesome fuel injected crate motor.

  • #PT700R4RV


    Our heavy duty trans with additional modifications to handle up to 450 hp in heavy vehicles such as pick-ups and Suburban's. Our special heavy duty torque converter with towing modifications is included. This is the ideal unit for the person with a warmed up small block or mild big block who tows a boat or a camper on weekends, but doesn't want to sacrifice drivability and economy during the week. This is also an excellent choice for the Streetrodder who would like the durability and economy this unit provides without the higher stall speed and aggressive shifts of the street/strip version.

  • #PT700R4HD4x4


    Our heavy duty replacement trans for 4 wheel drive pick-ups and Blazers is packed with additional upgrades to handle up to 450 horsepower and the additional strain of oversized tires and off-road use. This trans also includes our 4x4 torque converter with stall speed modified for off-road and towing use. This transmission features the factory ”K” case with provision for bolt on aluminum dust cover and block supports and is designed as a direct replacement for GM four wheel drive trucks originally equipped with a 700R4 transmission.

  • #PT700R4SS


    Our street/strip version features over 40 performance and durability upgrades and modifications. These include: high load capacity sprags, high energy friction and band, increased pump volume and pressure, and more to provide the highest level of performance and economy possible. This is a great trans for Streetrods, Muscle Cars, and Sport Trucks whose owners crave the awesome acceleration and tire-spinning, wide open throttle shifts this trans is built for. This trans comes with our High Performance "Torque Max" torque converter with stall speed up to 2600 rpm. This trans is rated 450 horsepower and 500 lbs. of torque.

  • #PT700R4ST


    This transmission was developed to fill the gap between the SS and SX model 700R4's we offer. The ST has all of the SS model modifications and also features the stronger input drum and reaction shell of the SX model along with the modified reverse input drum and special performance band. This is a great choice for cruiser oriented vehicles with up to 500 horsepower. This trans comes with our "Torque Max" converter with up to 2600 rpm stall speed.

  • #PT700R4SX


    This is our strongest version of the 700R4 and is rated at 575 horsepower and 600 lbs. of torque in vehicles up to 3700 lbs. We take all the modifications and upgrades from our PT700R4SS and add Billet second and fourth gear Servo assemblies , heavy duty reaction sun shell, 5 pinion rear planet, additional 3-4 clutch for a full 8 clutch pack, and a host of other durability and performance modifications to create the strongest 700R4 available. Comes with our ‘TORQUE-MAX’ torque converter in stall speeds up to 2600 rpm. If you are looking for the strongest, toughest performance 700R4, look no further; this is the trans for you!



This compact overdrive was used from 1981 to 1987 in everything from full size Cadillac’s to the Buick GNX. It is the same overall length and output spline as the short tail turbo 350 though the mount location is a full 6 inches further back. This transmission has a universal bolt pattern which fits the Chevrolet, Buick, Olds, Pontiac and Cadillac engines of the mid sixties up through the 80’s. Not as strong as the 700R4, the 2004R can still be built to a high level of power handling capacity. The 2004R is an excellent trans for vehicles with space limitations such as early Fords with X frames that do not permit the use of a 700R4 without much modification. 

We also provide a custom rebuild service for Monte Carlo SS and Buick Turbo owners who want to retain the original trans but would like a performance oriented rebuild to cope with their power upgrades. Call for more details.

“Due to the current scarcity of quality cores for this model transmission we are suspending sales until such time that we can provide you the quality of product and delivery time you have come to expect from our company. If you have a good core you would like to have built and modified please contact our sales department for a quote on this service”

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  • #PTPCS2004R/700R4


    COMPUSHIFT Mini for GM 700R4 and GM 2004R

  • #PT2004RHD


    Heavy duty replacement trans, built and modified for up to 300hp, includes heavy duty lock-up torque converter and stall speed available up to 1800rpm.

  • #PT2004RSS


    Street/Strip trans features modified high performance pump, hardened stator and reaction shell, increased capacity Borg Warner clutch packs, high performance band, modified valve body, single wire lockup system and high performance servo for up to 390hp, Also includes or Torque Max street/strip torque converter which comes with heavy duty clutch, fully tig welded construction and full needle bearings, stall speed available to 2600rpm.

  • #PT2004RSX


    This is our strongest available 2004R for those who can’t step to a 700R4 or 4L80E due to space restrictions or just like a little tighter gear spread than the 700R4. This unit is rated to 550HP and 600Lbs of torque and features increased capacity clutch packs with high performance frictions and steels, induction hardened forward clutch drum, modified direct clutch drum, high performance band, billet servo, high performance pump with billet rings and vanes and shot peened rotor, high output pressure and lube system, modified governor and high performance modified valve body for impressive and durable shift performance. This unit also includes our premium “Torque Max” torque converter with super duty clutch and damper, furnace brazed and tig reinforced fins, one piece anti balloon hub, hardened turbine splines and custom stator in stall speeds up to 2600rpm.



Overall Length 27 5/8” Face to mount distance 20 3/8”, Ratios: 1st 2.52, 2nd 1.52, 3rd 1.00

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  • #PT350HD


    Our heavy duty 350 is a perfect replacement trans for those seeking a stronger and better performing trans but don't need nor want a street/strip type trans. This is a great transmission for engine applications up to 325hp. Trans is built with heavy duty clutch packs, shift improvement, and durability modifications. Includes our heavy duty torque converter with 1600-1800 stall speed. A lot of trans for a little money.

  • #PTP350SS


    Our heavy duty trans with a lot more performance built in, including semi-automatic shifting which allows you to manually upshift or downshift or let the trans shift automatically. This transmission is rated for engines with up to 450hp. The trans also features a special intermediate sprag race and high rpm governor. A great trans for hot rodding around and occasional racing. Includes our 2000-2200 stall converter.

  • #PTP3504x4HD


    This specially modified 4x4 transmission incorporates an oversized low reverse sprag assembly, heavy duty intermediate sprag, heavy duty band and performance clutch packs. The valve body features modifications for manual control of up and downshifts as well as fully automatic shifting as well as higher operating and lube pressure for increased performance and maximum durability. This trans includes our Torque Max converter with stall speed optimized for ideal off road and towing use. Output shafts available to fit most transfer case applications.

  • #PTP350SX


    This is our strongest 350 capable of horsepower and torque in excess of 600Lbs If you want the ratios and size of the 350 but the strength and capacity of a 400 then this is the perfect choice for you. This transmission features a custom machined High clutch drum with 36 element intermediate sprag, 5 high performance clutches in both the forward and direct clutch pack, extra wide hi performance low reverse sprag with wider outer race, and the choice of either a semi automatic or full manual hi performance valve body. In addition to these features this model includes our "Torque Max" torque converter with stall speed up to 2500 rpm, a hardened drive hub with anti balloon plate and hardened turbine hub.

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  • 350 Lock-Up Converter


    The 350 Lockup transmission uses unique hydraulic circuitry to apply a clutch in the torque converter to completely eliminate slippage. What this does for the enthusiast is allows higher stall speeds to be used for acceleration without causing slippage and excessive heat build up when cruising just like the overdrive GM transmissions use. The lockup feature will typically lower cruise rpm by 200-500 rpm or even more depending on speed, stall speed and rear end ratio. This translates into improved fuel economy and lower operating temperature of both the transmission and engine. This is a great alternative to an overdrive transmission when space is a concern and is considerably less expensive as well.



Overall Length 28 1/4, Face to mount distance 26 3/4”, Ratios: 1st 2.48, 2nd 1.48, 3rd 1.00

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  • #PTP400HD


    Our heavy duty 400 features heavy duty clutches and bands, valve body and lube modifications to provide a durable transmission ideal for light trucks and passenger cars. Comes with our heavy duty 1500-1700 stall converter. This unit is rated to 400HP/450 lbs of TQ and is available in both Chevy and Buick, Olds, Pontiac and Cadillac applications.

  • #PTP400SS


    Our heavy duty 400 with higher capacity clutch packs, Kevlar band, high capacity 34 element sprag race and semi-automatic valve body, which allows you to select gears manually, or leave it in drive for full automatic shifting. This trans includes out 2000-2200 stall converter and is a great choice for the weekend warrior with up to 600 horsepower and a heavy foot.

  • #PT4004x4HD


    This specially modified 4x4 transmission uses the heavy duty case with provision for bolt on dust cover, and features upgraded clutch packs, 34 element intermediate sprag, heavy duty low sprag, heavy duty low and intermediate band, full manual up and downshift control as well as fully automatic shifting, high output pump, and a host of durability modifications to make this transmission a strong and reliable component to your off road vehicle. This transmission includes our Torque Max torque converter with stall speed optimized for off road and towing use. Several output shaft styles available to fit a variety of transfer case applications.

  • #PTP400ST


    Our next step up from the 400SS features Carbon/Kevlar reinforced bands, high capacity 34 element sprag race and semi-automatic valve body, which allows you to select gears manually, or leave it in drive for full automatic shifting. This trans features a 6 clutch direct clutch pack with semi metallic frictions and a billet steel forward clutch hub to improve the horsepower rating to 725HP. This trans includes our 400HS high stall converter with up to 2500 stall, and additional converter choices are optional up to 4000 stall if needed. This trans is great choice for the 572 Crate engines as well as any high output Big block.

  • #PT400SX


    This is the trans of choice for high output engines up to 850HP. The 400Sx has a modified pump for higher operating pressure, 300M input shaft and re-broached forward clutch drum with larger spline contact area, 300M input clutch hub, semi metallic frictions, Kevlar lined front band with reinforced anchor points, extra direct clutch, 34 element intermediate sprag, improved design low reverse sprag, upgraded center support and customized valve body and governor with both automatic or semi automatic shift selection. The transmission is performance clearanced during the build including clutch packs and gear train as well as final endplay. Low drum is machined and a wider band used, low/second accumulator is modified for quicker band release. All external hardware is cad plated and the pan is a new, heavy steel part to resist leakage.



The 4L80E was introduced by GM in 1991 to replace the rugged, but aging 3 speed TH-400. The 4L80E was the first fully computer managed transmission in the GM fleet and has proven to be a strong and reliable transmission in 3/4, 1 ton, and Motor Home Chassis, providing overdrive towing capability and precision electronic shift performance. Naturally Hot-rodders were drawn to this trans as a means to finally get a reliable overdrive to go behind high output big blocks and tow rigs. Unfortunately, it took the after market a few years to come up with a simple and easy to install stand alone computer system that could be fitted to older, non computer controlled vehicles. Well the wait is over and now anyone wishing to harness the full power of their engine up to 1,000 horsepower, can do so with one of our 4L80E transmission and computer packages.

Each trans and converter are built to order to insure the correct stall speed and performance modification per application. The trans is then dyno tested and the computer calibrated for shift scheduling and firmness as well as converter clutch application. The end user has only to install the trans, make 4 or 5 simple connections, and go have fun! If you’re making to much power for a 700R4, and need an overdrive, this is the best choice you can make for performance and drivability for your car or truck.

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  • #PT4L80EHD


    Our heavy duty replacement trans and converter available with or without controller. Extensively modified to provide clean crisp shifts, improved oiling, stabilized pressure and updated electronics this is a great choice for those seeking to replace an original trans or change over for 3/4 or 1 ton chassis interested in reduced engine rpm and all its benefits.

  • #PT4L80ESS


    Our street/strip version of the mighty 4L80E made stronger with high energy clutches and bands, improved electronics, modified high output pump and valve body, 34 element intermediate sprag and a host of other modifications and upgrades including all new electronics and internal harness. Converter stall speeds up to 2500 rpm are available in this package. This unit is good to 675 horsepower and is the perfect choice for “big power” crate engines, stroker motors, and mild supercharged and turbo applications.

  • #PTP4L80EST


    All the modifications of our SS model plus a billet steel input clutch hub, a 6 clutch high performance Direct clutch pack and a wider carbon /Kevlar intermediate band which boosts HP capacity to the 750HP mark for those that need a bit more than the SS model offers but not quite the extreme of the SX model.

  • #PTP4L80ESX


    This is the 4L80E of choice for most applications up to 850 horsepower. This trans features all the components and upgrades of the SS model with the addition of a 300m billet steel input shaft, high strength billet clutch hub, extra capacity high energy clutch packs and bands as well as additional shift and durability modifications to handle Huge horsepower and torque. The SX transmission includes our 2500 stall torque converter, but can be optioned with stall speeds up to 4500rpm,Also available with upgrades for extreme applications beyond 1000HP, ask your sales person for details.



Introduced in 1993, the 4L60E is basically a 700R4 with electronic controls. Gone are the governor, t. v. cable and conventional valve body. This trans must use a computer to function. We offer this trans in several forms for trucks, high performance street/strip cars and street rods. If you have a 4L60E to retrofit to a non computerized application we can support you with our COMPUSHIFT transmission computer system, priced at $1279.61

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  • #PT4L60E HD/RV

    from $2,418.30

    Our heavy duty truck and off/road 4L60E is modified with increased clutch capacity, upgraded electronics, modified pump and valve body, bonded steel apply pistons, alloy accumulator pistons, high output boost valve and pressure regulator assembly, high rpm pump rings and Torrington vanes, Borg Warner 29 element dual cage input sprag, Borg warner low sprag, and a host of other modifications to produce a reliable trans capable of handling up to 400 horsepower. Perfect for towing, four wheeling or spirited street driving this is an excellent upgrade for your tired original transmission. Comes with our Heavy Duty torque Converter with carbon clutch, furnace brazing and hardened hub.

  • #PT4L60E4x4HD

    from $2,446.44

    This is the 4x4 version of our RV model with unique 4x4 style case and output shaft. Comes with our Torque Max torque converter with stall speed optimized for the kind of driving you do whether towing or off road trail driving.

  • #PT4L60ESS

    from $2,631.91

    Our street/strip version of the 4L60E is designed for the performance enthusiast. This trans features our High performance pump with high rpm pump rings, Torrington vanes, high output boost valve and pressure regulator assembly, special valve body and servo assembly,alloy accumulator pistons, TCC and AFL valve replacement, steel bonded apply pistons, 29 element dual cage input sprag,Borg warner low tension low sprag assembly, special modified sun gear shell, increased clutch capacity, performance servo, updated electronics, increased operating pressure and lube mods and a host of other modifications. Comes with our Street/Strip torque converter with carbon clutch, furnace brazing, hardened hub, and stall speeds up to 2600 rpm. Rated to 425HP this is a great choice for Corvettes, F-bodies and Impala owners who modify their vehicles.

  • #PT4L60EST

    from $2,687.00

    This trans is the next stage up from our SS model and is rated for up to 500HP and 525Lbs TQ. Features all of the SS modifications plus and improved sun gear shell design specially machined for high rpm use, A high energy friction 8 clutch 3-4 clutch kit and reinforced input clutch drum assembly with high rev spring kit allowing operation to 6500rpm. Includes our Torque Max torque converter with stall speeds up to 2600rpm.

  • #PT4L60ESX / PT4L65ESX/4L70ESX

    from $3,412.36

    Rated to 575hp, this is our strongest version of the 4L60E/4l65E/4L70E and is far more durable than even the factory models of these transmissions. In addition to all the mods we make to our SS model transmission, this unit is equipped with the genuine OE style 5 pinion planetary,( not the wimpy aftermarket 5 pinion planets with inferior castings), larger torrington bearings and a hardened reaction hub. The input drum is modified to resist breakage and forward piston replaced with a stronger design, the Reaction sun shell is replaced with a super duty shell which is substantially thicker in the fragile spline area than even the latest GM upgraded shell. We use billet servo assemblies for both the second and 4th gear servo for unparallel holding force but with streetable shift comfort. The Reverse drum is modified and a High Carbon 2-4 band with reinforced anchor points. The ¾ clutch pack has increased capacity of a stock pack and uses special spring sets in the spring packs to help prevent centrifugal apply at high rpm. The pump and valve body are extensively upgraded and modified for increased oil volume and pressure and the TCC circuit is modified for positive converter clutch application. These units come with our Torque Max torque converter with clutches tailored to your specific ECM programming. Standard stall speeds are available from 1600 up to 2500 rpm but stall speeds up to 4500 are available as an extra cost option.

For more information or to place an order, please contact us via E-mail at or by phone at 817-599-7680, Sales 1-866-SHIFTUP.

We look forward to serving you.


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