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Home > Products > Transmissions > 6L80E / 8L90E - PG | TH350 | TH400 | 4L65E | 4L85E | TF727 | TF904 | 6L80E | 8L90E
6L80E & 8L90E Transmissions

In late 2005, General Motors introduced the 6L80E six speed automatic transmission. Featuring clutch to clutch shifting, it eliminated the one-way clutches used in earlier transmissions. Its eight-speed successor, the 8L90E was introduced in 2014. ATI is now developing components to upgrade your 6 and 8 speed transmission!

6L80E 6-Speed Transmssion

The 6L80E has a gear ratio spread of 4.03, 2.36, 1.53, 1.15, .85 and .67. At 500HP, the clutches in these units go out and at 700HP you WILL start hurting hard parts. ATI can build up your 6L80E transmission for up to 1000HP.
  8L90E 8-Speed Transmssion
The 8L90E is an eight speed with gear ratios of 4.56, 2.97, 2.08, 1.69, 1.27, 1.00, 0.85, 0.65 and REVERSE 3.82. A numerically high 4.56 first gear ratio offers strong take-off performance while a wide 7.0:1 overall ratio helps optimize cruising efficiency. Two versions are available: a slip-yoke design for use with the LT1 engine and a fixed-yoke design to be used with the LT4. ATI upgrades all 8L90E transmissions with increased clutches and a different clutch material make-up and also upgrades the clutch drums from LT1 units. These units are a great choice for everything from a '32 Ford Street Rod to a '69 Camaro Pro touring car to your drag car like those seen on Drag Week.

6R80E Chevy Transmission Kit

 
6R80E Chevy Transmission Kit
ATI has the first true externally controlled, 6-speed transmission package for your Chevrolet powered vehicle! Allows easy highway cruising, seamless downshifts, Transbrake and 2nd gear (2.34) leave options through multiple templates tuned independently of the engine management system! Torque converter, bellhousing, transmission and controller all designed to fit and work together with a conventional Chevy or LS based engine!
  • Gear ratios: 4.17 / 2.34 / 1.52 / 1.14 / .86 / .69
  • 500 - 1000 HP options (weight and gear dependent)
  • US Shift™ Quick 6 box needs only 5 wires to get running: Power - Ground - Tach - TPS - Ignition
  • “Shift in Progress” signal wire comes standard so torque cut can be added to tuning
  • Sport mode and Tap Up and Down shifting via shifter or paddle
  • Short steel pan included. Moroso fabbed pan coming soon
  • Extra short pan and deep cast pan options are available.
  • 2WD and 4x4 build options

Description HP Rating Part # Price
6R80 Chevy Transmission Kit 500 - 1000HP 730000 $6995.00

ATI Products at PRI Show   ARTICLE: What Goes Into Building A 1,000HP-Capable 6R80 Transmission
DragZine talks with JC Beattie about what goes into building Ford’s 6R80 six-speed automatic transmission capable of handling up to 1,000 horsepower.


6L80E / 8L90E Transmission Components and Accessories



6L80E / 6L90E Gear Set
For vehicles producing over 750 HP, Nitrous or heavy duty vehicles. 4140 billet steel drive plate is milled to the planetary housing to eliminate separation under load. Core must be returned or add $300.


Application Part # Price Purchase
6L80E GEAR SET $1436.85
6L90E GEAR SET $1436.85

 


6L80E / 6L90E Intermediate Shaft & Hub
A stronger replacement to remedy the OEM failure in high HP, Supercharged and Turbo applications.

  • 300M Shaft / 4140HT Steel Hub
  • HD Torrington Bearing with double roller count than OEM

Application Part # Price Purchase
6L80E INTERMEDIATE SHAFT & HUB $1008.37
6L90E INTERMEDIATE SHAFT & HUB $1008.37

6R80E Intermediate Shaft
A stronger replacement to remedy the OEM failure in high HP, Supercharged and Turbo applications.

  • 300M Intermediate Shaft
  • Ideal for high horsepower applications
  • A must when power adders such as superchargers, turbo's and nitrous systems are used
  • The shaft is a 100% drop-in product
Application Part # Price Purchase
6R80E INTERMEDIATE SHAFT $599.00
Transmission Filters

Application Part # Price  
8L90E FILTER - OEM REPLACEMENT $25.70
6L80E / 6L90E FILTER $16.43
Master Overhaul Kits
Complete rebuild kit includes all paper, clutches, steels, seals and rings. The 8L90E kit includes filter and Raybestos’ upgraded friction components manufactured with GPZ high energy fibers for ultimate stress and high durability.

Application Part # Price Purchase
8L90E MASTER OVERHAUL KIT $699.00
6L80E MASTER OVERHAUL KIT $959.24
6L90E MASTER OVERHAUL KIT $1061.50

8L90E Input Shaft
8L90E Vasco Input Shaft


Applications Part # Price
8L90E INPUT SHAFT - VASCO 704000 $865.58

8L90E Output Shaft, 300M
Fits C7 Corvettes with 8-speed and the ZR1.


Applications Part # Price
8L90E OUTPUT SHAFT - 300M 704050 $715.85
8L90E Heavy Duty Apply Ring
8L90E Heavy Duty Apply Ring, 1-2-7-8-R

Applications Part # Price  
8L90E HD APPLY RING 704561 $105.50

6L80E 6L90E Upgrade Kit
Includes piston, piston kit, backing plate, pump slide spring, seal kit, valve kits and
boost and zip kit.

6L80E 6L90E UPGRADE KIT - INLCUDES ALL PART #S BELOW 710000 $956.87

1-2-3-4 HEAVY DUTY PISTON 710001 $78.85
4-5-6 HEAVY DUTY CLUTCH APPLY PISTON KIT WITH BACKING PLATE 710002 $126.24
CLUTCH BACKING PLATE - INCLUDED IN #710002 KIT
ONLY ORDER IF NEEDED
710003 $64.71
PUMP SLIDE SPRING 710004 $9.29
ZIP KIT - COMPLETE 710011 $305.91

Zip Kit Components 710011 Part # Price
CENTER SUPPORT SEAL KIT 710005 $55.15
CLUTCH BOOST VALVE 710006 $40.88
BACKING PLATE 710007 $50.46
PUMP SLIDE SPRING 710008 $31.80
PRESSURE REGULATOR & BOOST VALVE 710009 $83.48
AFL VALVE 710010 $66.82

GPZ Friction Module Kit
Fits 10L80, 10L90, 10R80, 10R90

Applications Part # Price  
GPZ FRICTION MODULE KIT 702100 $298.19
Bushings and Bushing Kits

Application Part # Price
6L80E / 6L90E 11 PCS BUSHING KIT - TEFLON COATED DURA BOND $97.38
6L80E EXTENSION BUSHING - TEFLON COATED DURA BOND $9.95
6L90E EXTENSION BUSHING - TEFLON COATED DURA BOND $9.95
6L80E / 6L90E PUMP BUSHING - TEFLON COATED DURA BOND $9.95
6L80E / 6L90E Piston Kit

Application Part # Price
6L80E / 6L90E PISTON KIT - 2006 & UP - 5 PCS $163.43
8L90E Bearing for Drum

Applications Part # Price  
FOR 1-3-5-6-7 CLUTCH 703514 $13.91

8L90E HDXTREME™ Clutch & Friction Kits
Massive amounts of holding capacity for your 8L90E transmission! Increased clutch counts in all positions by as much as 40%! Billet steel, American Made, pressure plates, with updated high performance frictions and steels.

Coming soon - currently in vehicle testing phase

Applications Part # Price
HDXTREME™ CLUTCH & FRICTION KITS -- --
 
     
 
 
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