SLP 1.85 rocker arm GP [Archive] - Hummer H2 Forum: H2 forums

SLP 1.85 rocker arm GP

07-14-2003, 08:16 AM
We are running a GP for the SLP 1.85 rocker arm packages. These 1.85:1 ratio rocker arms are available for the gen III engines (LS1, LS6, Truck 4.8,5.3,6.0). SLP's exclusive design is based on the stock rocker and is built by the OEM manufacturer using the same high quality materials and processes. Versus the stock 1.7:1 ratio rocker, SLP's 1.85:1 ratio rocker will result in horsepower and torque gains by increasing lift by approximately 10% and forcing the valves to accelerate faster during opening and closing. SLP's rocker arms are designed as a bolt-on replacement for stock. No valve cover or cylinder head modifications are necessary and stock pushrods can be re-used. Depending on model application, optional SLP valve springs may be required. The rockers are offered in 4 kits to suit your particular needs. Refer to the application chart for details. SLP highly recommends our tool set (PN 53306) for proper installation. A rocker arm compatibility chart for stock cams can be found in the GP section of our website.

GP pricing for 7 or more orders is -

SLP Rocker arm package

Rocker Arm Package, LS1/LS6 w/LS6 Springs, Keepers

SLP Rocker Arm Package, LS1/LS6 w/SLP Springs, Titanium Retainers, Keepers

Following info applies to all SLP rocker packages listed above.
A spring upgrade is recommended with this modification.

LS1 valve spring
install 1.800" / 75 lbs
max lift 0.525" / 230 lbs

2001 LS6 valve spring
install 1.800" / 90 lbs
max lift 0.540" / 250 lbs

2002 LS6 valve spring
install 1.800" / 90 lbs
max lift 0.600" / 300 lbs

SLP valve spring
install 1.800" / 90 lbs
max lift 0.610" / 320 lbs
The SLP valve spring tool is recommended -

SLP Valve spring compressor with air hold fittings

Orders can be placed on our website or by calling 1-877-4-TBYRNE. This GP will be coming to a close on July 24th.

Have a good day,