Product Details

Save $30+ compared to purchasing parts individually.

The OPT Stage 2 high performance valve body upgrade package takes the best parts available and groups them into one kit, for the best results possible. Included, are all the parts needed to complete the job, minus fluid.

This kit will fit 1993-2010 GM 4L60E, 4L65E, 4L70E, 4L75E non-hybrid units.

This kit is designed for high horsepower and performance uses. Your transmission will have positive shifts in all gears and will handle considerably more HP over stock.

The kit includes:

• Transgo 4L60E-HD2 shift kit
• Transgo hardened separator plate
• Sonnax pinless 1-2 accumulator piston
• Sonnax pinless forward accumulator piston
• Filter kit with pan gasket
• (Optional) Corvette 2nd gear servo
• (Optional) Superior K034 billet 4th gear servo
• (Optional) Sonnax 3-4 pinless accumulator piston

The 4L60E-HD2 shift kit provides the following modifications.

• This shift kit gives crisp muscle car shifts.
• Puts the driver in command of the transmission.
• Hold 1st, 2nd, and 3rd to any speed.
• Backshift to 3rd, 2nd, or 1st at any rpm by moving the lever.
• Kit includes the 7-CS high RPM clutch spring kit for high RPM vehicles, over 5,500.
• Includes the 4L60E-Boost, .500 boost valve.

NOTICE: 98 up: If vehicle has Torque Management this kit will not make hard shifts. However many aftermarket programmers for engine performance reduce Torque Management.

Does not require transmission removal for installation except for the installation of the optional 7-CS.

4L60E-BOOST: After March 2005 an Input Speed Sensor was added which requires transmission removal for installation. Prior to March 2005, the transmission will not need to be removed.

The 4L60-E was found in the full range of General Motors vehicles including, Buick, Cadillac, Chevrolet, GMC, Hummer, Isuzu, Oldsmobile, Pontiac, and SAAB.

These transmissions can be found in the following vehicles; however you should double check your application with the 16 bolt pan count.  It is common for similar vehicles to have multiple transmission options available from the factory.

• Astro Van 1993-2005
• Avalanche 2002-2008
• Blazer 1993-2005
• Bravada 1993-2004
• Brougham 1994-1997
• Camaro 1994-2002
• Canyon 2004-2012
• Caprice 1994-1996
• Colorado 1994-2012
• Corvette 1994-2005
• Envoy - XUV - Denali 2001-2010
• Escalade, EXT, ESV 1999-2006
• Firebird & Trans Am 1993-2002
• GTO 2004-2006
• Hummer H2 2003-2007
• Hummer H3 2006-2011
• Impala SS 1994-1996
• Isuzu Ascender 2003-2009
• Isuzu Hombre 1996-2000
• Isuzu Pickup, I280, I350, I290, I370 2006-2009
• Fleetwood 1994-1997
• Rainier 2004-2007
• Roadmaster 1994-1996
• SAAB 9-7 2005-2009
• Safari Van 1993-2005
• Sierra Truck 1993-2013
• Silverado Truck 1993-2013
• SSR 2003-2007
• Suburban 1993-2013
• Tahoe 1993-2013
• Trailblazer 2001-2009
• GMC & Chevy Van 1994-2013
• Yukon 1993-2013

These transmissions are part of the Turbo-Hydramatic series and also known as: 4L60E, 4L60-E, 4L65E, 4L65-E, 4L70E, 4L70-E, 4L75E, 4L75-E, M30, M32, M70.