Duramax Drag Racing/Sled Pulling #9100

• Requires .075 piston valve pockets.
• Works well from 2500-5200 rpm.
• Requires a high stall converter.
• Valve Lash .012/.012
• We recommend the use of LLY or later lifters. Do not use LB7 lifters.

• The camshaft is an integral part of your engines breathing characteristics. 
• The camshaft lobe profiles need to be carefully matched to the rest of the engine components in order to achieve maximum performance for any given application. 
• We have designed profiles to meet many different applications that include dedicated Drag Racing and Sled Pulling. 

Valve Adjustment Procedure

• 1)     Rotate the engine and adjust one cylinder at a time.
• 2)     When the exhaust valves just begin to open, adjust the intake.
• 3)     When the intake valves are just past maximum lift, adjust the exhaust.

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