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  4L80/4L80E . (THE DESTROYER)

4L80/4L80E Transmission

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Our Price: $2,750.00

Availability: Usually Ships in 3 to 5 Business Days
Product Code: 4L80/4L80E

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Description Extended Information
4L80/4L80E - Rated to hold up to 1200HP.
Installation and extended warranties available.  If a Lift Gate is needed at time of delivery a $25 Lift Gate charge will be billed to your credit card.
  • MAD DOG'S SUPER HEAVY DUTY 4L80/4L80E Rated up to 1200HP All Mad Dog Transmissions are completely rebuilt and come with a Master Overhaul Kit which includes: • All new lip seals • All new gaskets • All new Teflon rings • New filter • TCC Sonnax update valve (to eliminate common 1870 code) • New TCC Solenoid • All new steels • All new bushings • All new Raybestos clutch discs • All new sprags • All new shift solenoids • New direct drum • New center support • New 34 element sprag • New Sonnax boost valve • All new wiring harness • New EPC solenoid • New shift solenoids • New pressure manifold • 4140 Billet Hub THIS TRANSMISSION CAN HANDLE 1,200 HP and PULL A HOUSE DOWN !!! This MAD DOG TRANSMISSION is designed for lots of abuse, excellent for RACING or TOWING heavy weight. This transmission will not take away any horsepower from your engine. As a matter of fact, this transmission will deliver more rear wheel horsepower than the factory 4L80E !!! The reason being is that we run roller bearings instead of thrust washers which drag inside the transmission and create more heat. The most common problem on the 4L80E is losing reverse and 3rd gear due to the aluminum pressure regulator valve binding up and sticking at wide open pressure. We put a steel pressure regulator valve to eliminate that common problem. Another common problem is damaged plastic oem accumulators. We replace them with the Sonnax aluminum accumulators with a new sleeve. We use the updated Sonnax sleeve and piston to eliminate that problem. Over 26 years of building experience is put into each transmission to ensure that the pressures and clearances are to specifications. NOTE: This transmission requires an on-board computer to operate correctly. (which costs anywhere from $1,000 - $1,200) We offer a Full Manual Valve Body that will eliminate the on-board computer. (additional $350.00) NOTE: Let us know what type of shift you want. We can custom build each valve body for your application. • Stage 1 is a factory shift. • Stage 2 has a nice crisp shift and at wide open throttle it will put you in your seat. • Stage 3 is for that Saturday night special. Be warned stage 3 shift is very violent! I have been building transmissions for over 26 years. I'm a former NHRA Drag Racer. It's always best to put top of the line components in the transmission, however if you don't install them properly and check all your clearances, etc., ANY transmission will fail! We provide excellent technical support to all our customers. We will walk you through the proper installation of your new transmission. CALL 770-781-0949, ASK FOR MAD DOG LOU. I rebuilt each transmission like my own. I have over 26 years of racing experience. Believe me I've done it all! If you have any questions on conversions, and how lockup works or lock up converters or nitrous applications etc., I will be more than happy to give you my professional opinion. All my transmissions are 100% tested right here in the shop. Never play Russian Roulette and hope the transmission might work! Guaranteed to work right the first time! Nobody wants to spend hours of installing a transmission just to find out that there is a possible leak, vibration, delayed engagement, sloppy shifting, no reverse, and the list goes on!!! We provide sales and technical support 7 days a week up until 11:00 pm ET. Call 770-781-0949 or e-mail your questions to maddoglou454@aol.com “NECK BRACE NOT INCLUDED !!!” If YOU’VE got THE HORSEPOWER we have the transmission !!! There will be a core charge of $500 (not included in the price) but, If you send/bring me your core in good, rebuildable condition, we will refund your $500 core charge. ***Note: If the customer’s core is returned in a condition that it can be rebuilt (no cracks and within 15 days), a refund will be processed to the customer.
  • Installations are available on all our transmissions.
  • These transmissions are a direct replacement for your GM vehicle. No modifications or custom tuning necessary.
  • If you are looking for an overdrive transmission for your old school vehicle, we can do the complete installation or send you our conversion kit.
  • Extended warranties are available on all our transmissions.

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