SLP Rocker-Arm Package, LS1/LS6/LS2 Camaro/Firebird/Corvette/GTO/4.8/5.3/6.0 Silverado/Sierra/SUV (1.85 ratio)
SLP is proud to re-release our 1.85-ratio rocker arm package for GM "Gen III" engines which includes LS1, LS6, LS2 as well as 4.8, 5.3 and 6.0* (LQ4 OR LQ9) liter truck engines. Designed as a true bolt-on replacement, these new rockers require NO valve cover or cylinder head modifications (please reference our instructions for proper installation). Our exclusive design is based off of the stock rocker providing an OEM quality steel construction and a roller bearing trunion which results in a 10% increase in valve lift over the stock 1.7 ratio rocker arms and gains of up to 12 horsepower over stock. This package includes 16 rocker arms, detailed instructions and all required installation hardware.

This package includes:
1.85 Ratio Rocker Arms 16 qty (50185)
New bolts 16 qty
NOTE 1: When using an aftermarket camshaft, please contact SLP for proper compatibility.

NOTE 2: LS1, LS6 and LS2 engines may require SLP part # 53002 or part # 53003 springs, part # 53103 or part # 53104 retainers and part # 66345 keepers. Please reference chart below for proper application and part # 51185 or part # 51186 rocker arm package when purchasing the complete package.

SLP ROCKER-ARM COMPATIBILITY CHART (with stock camshafts)
YEAR APPLICATION ENGINE Are SLP springs & retainers required? SLP Suggested Spring P/N use w/1.85 rockers Intake Valve Lift with SLP 1.85 rocker Exhaust Valve Lift with SLP 1.85 rocker
2005-07 C6 Corvette LS2 Yes 53003 0.600 0.596
2002-04 Z06 Corvette LS6 Yes 53003 0.600 0.596
2001 Z06 Corvette LS6 Yes 53003 0.569 0.568
2001-04 Corvette LS1 No N/A 0.505 0.521
2000 Corvette LS1 Yes 53002 0.544 0.544
1997-99 Corvette LS1 No N/A 0.514 0.521

2001-02 F-Body LS1 No N/A 0.505 0.521
1998-00 F-Body LS1 Yes 53002 0.544 0.544

2005-06 GTO LS2 Yes 53003 0.600 0.596
2004 GTO LS1 No N/A 0.505 0.521

2006 CTS V LS2 Yes 53003 0.600 0.596
2004-05 CTS V LS6 Yes 53003 0.600 0.596

2005-06 SSR Truck LS2 Yes 53003 0.566 0.564
2006-07 Trailblazer SS LS2 Yes 53003 0.600 0.596
2001-07 CK Truck LQ4, LQ9 No N/A 0.505 0.521
1999-07 CK Truck LR4, LM7 No N/A 0.497 0.507
1999-00 CK Truck LQ4 No N/A 0.497 0.507
2003-04 ST Truck LM4 No N/A 0.497 0.507
2002-05 CK Truck L59 No N/A 0.497 0.507






RECOMMENDED PARTS
PARTS THAT CAN ENHANCE THE APPLICATION OF PART# 50185 PART NUM DESCRIPTION PRICE
53003 Valve Springs, LS1/LS6/LS2 High-Performance .600 Lift (set of 16) $249.95