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and 3/8 in
this pulley ensures optimal performance and efficiency for supercharged setups
to increase flow for more performance
Speedmaster CNC ported cylinder heads are machined on dedicated 5-axis CNC machines to ensure accuracy and better flow
horse power increase of 10-15
Chevy GM LS1 / LS6 1.9 Ratio Adjustable Stainless Steel Roller Rocker Arm Set and 3/8 inSpeedmaster Stainless steel rollers are manufactured from heat treated stainless steel and alloy steel tip rollers. Speedmaster roller rockers are available in various ratios, so you are good to go. They feature greater strength and durability, capable of withstanding valve spring load up to 600lbs.
US$ 36.00
US$ 38.95
US$ 12.00
