Performance & Quality. Monster Transmission & Performance is the premier supplier of all automotive transmission types. From youth soccer moms to speed-demon dads, our focus is on providing quality transmissions and quality experience at an awesome value. We are the Leading Source for Transmissions that Shift Better and Last Longer! JASPER Performance Transmissions - JASPER ® offers two levels of performance transmissions. The Class I Performance transmission is for the individual who wants more performance than stock, but nothing too radical in shift pattern. The Class I transmission does not have a drastically altered shift but will provide firmer, more pronounced shifting. Sales@performabuilt.com 1-888-744-6542 TechSupport@performabuilt.com 570-578-5686 Toggle navigation. Home; About; Products; Tech; Cart; 2yrUpgrade500 GM Black Edition 4L60E GM Black Edition GM Level 1 GM Level 2 GM Level 3 GM Performance 4L80E GM Performance TH350 GM Performance TH400 Cart.
- Performabuilt Transmissions Review
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- Performabuilt Transmissions Review
- High Performance Automatic Transmission
- Reviews On Performabuilt Transmissions
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Description
Our Pro Race Series transmission is the finest built street/race automatic transmission in the industry. These transmissions are tough and built to handle whatever you dish out. We incorporate all the updates and modifications to compensate for the problems and issues they were born with from the factory. We believe you will not find a better performance transmission anywhere!
Below are the details of our Pro Race (LEVEL-2) built transmission.
First, each core transmission is disassembled and carefully inspected. The case and hard parts are cleaned thoroughly and re-inspected for cracks, wear, or other damage before we begin. The case is specially prepared and a coating of and heavy duty, heat resistant, oil based enamel is baked on, creating a hard and durable glossy finish. The seals in the case are then replaced and assembly begins.
This transmission is suitable for applications to 700+ HP, and bolts to the Chevrolet, Buick, Pontiac and Cadillac (or BOP pattern engines).
Its features include the following components and modifications (Nothing but the best):
High Performance rebuild kit with additional frictions. Where possible, we install Alto, Raybestos and Allomatic performance frictions. We give special attention to the direct 3rd clutch.
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A hardened sun shell is installed, eliminating the weak area of the transmission. We also replace the factory plastic thrust washer with a brass washer, eliminating melt down and breakage issues with this washer.
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A wide red lining band, with reinforced band pin area is mated to a resurfaced drum for max hold.
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A Sonnax Super Servo is used to assure adequate apply, and special modifications are done during installation to reduce the downshift clunk associated with these large servos. Between the wide band above and the Super Servo holding is increased up to 50 percent over stock in second gear.
High Performance Automatic Transmission
A high performance pump with enlarged drain back, hardened pump rings, fixed position pump slide (for max high rpm pressure), a .500 boost valve, and full time lube modification to the pressure regulator valve is used.
We use heavy duty front and rear sprags (one-way roller clutch assemblies) to make sure this unit will take the torque.
Additionally, the following upgrades are added above our Level 1 unit:
.E4340 STEEL BILLET OVERDRIVE RING GEAR #24RCC/BRG
This custom ring gear assembly eliminates spline and fatigue failure common with 200-4R transmissions installed behind engines producing over 400 foot pounds of torque. The factory flange and broach is removed and replaced with a CNC machined E4340 steel billet flange. This is the best ring gear available. Period!
E4340 STEEL BILLET SHAFT FORWARD DRUM #24RCC/BFD
This drum is a must for high powered vehicles using the GM 200-4R transmission. This custom drum assembly eliminates shaft breakage common with the 200-4R transmission installed behind engines producing over 300 foot pounds of torque. The stock shaft is removed from the clutch drum on a CNC mill. A second milling operation machines the drum to accept the new shaft. The replacement E4340 steel billet shaft is the product of an 8 step CNC turning, drilling, and splining process. The shaft is then heat treated and welded into the drum. This item has been tested in vehicles producing over 800 foot pounds of torque with absolutely no signs of distress. This item is always in stock. Guaranteed!
We modified TCC apply to provide stronger engagement of the lockup clutch, and to enhance the increased durability of the higher (3000 rpm up) stall torque converters if used. This modification also improves the life of any stall converter from stock to performance.
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These transmissions have a PerformaBuilt performance shift kit installed, and will have very positive shifts, which become progressively more aggressive as throttle is increased. No accumulators are blocked causing unnecessary strain in normal driving, but it still delivers that kick-ass feel under throttle.
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This unit also features many other modifications for performance and durability, helping it achieve its 700 plus horsepower capabilities. This transmission will take whatever you can dish out and we guarantee it! You won’t find a better unit anywhere. And, with our customer service and the staying power that come with a larger company you can count on us to be there when you need us.