SLP 1.85 Ratio Rocker Arm Package for LS1 LS2 LS6

SLP 1.85 Ratio Rocker Arm Package for LS1 LS2 LS6

Item Code: C63037

Low Price Guarantee!
This product has been discontinued and is not available to order.


Product Description

SLP is pleased to introduce this 1.85-ratio rocker arm package for GM "Gen III" engines which includes LS1, LS2, and LS6, as well as LS2 based 6.0 liter truck engines. Designed as a true bolt-on replacement, these new rockers require NO valve cover or cylinder head modification. 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, springs, titanium retainers, keepers, detailed instructions and all required installation hardware.

The base package (rocker arms only) includes:

  • 1.85 Ratio Rocker Arms 16 qty
  • New bolts 16 qty

The complete package includes:

  • 1.85 Ratio Rocker Arms 16 qty
  • High-Performance Valve Springs 16 qty
  • Titanium Retainers 16 qty
  • Valve Keepers 32 qty
  • New bolts 16 qty

The optional springs (see chart below for required applications) are made by Comp Cams and are part number 26918 with a beehive shape for cams producing up to 0.600 inches of valve lift. You may use these with stock retainers if you wish.

The optional titanium retainers are built to withstand increased spring pressures and higher than stock RPM limiters. They weigh only 9.5 grams each, which is 2.5 grams lighter than an OEM retainer. They are compatible with stock valves.


  • 2005-07 Chevy C6 Corvette Coupe/Convertible LS2 (requires SLP springs - see below)
  • 2001-04 Chevy C5 Corvette Z06 LS6 (requires SLP springs - see below)
  • 1997-04 Chevy C5 Corvette Coupe/Convertible LS1 (model year 2000 requires SLP springs - see below)
  • 1998-2002 Chevy Camaro/Pontiac Firebird LS1 (model years 1998-2000 require SLP springs - see below)
  • 2004-06 Pontiac GTO LS1/LS2 (model years 2005-2006 require SLP springs - see below)
  • 2004-06 Cadillac CTS-V LS6/LS2 (requires SLP springs, see below)
  • 2005-06 Chevy SSR LS2 (requires SLP springs, see below)
  • 2006-07 Chevy Trailblazer LS2 (requires SLP springs, see below)
  • 1999-07 Chevy CK Truck LQ4, LQ9, LR4, LM7, L59
  • 2003-04 Chevy ST Truck LM4

NOTE: When using an aftermarket camshaft, please contact us for proper compatibility prior to ordering.

Installation Difficulty

Installation Difficulty 3


Average Customer Review Not yet rated
Write a review and share your thoughts with others.
There are no reviews. Be the first to submit a review.