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Speedmaster CNC ported cylinder heads are machined on dedicated 5-axis CNC machines to ensure accuracy and better flow
The quality of these throttle bodies are better than others available today
They include everything necessary to convert your existing spindle assembly to accept disc brakes
for increased strength and improved register
Stop searching junkyards and swap meets for a replacement for your cracked or broken timing cover
Pontiac 265 350 400 455 1.52 Ratio 7/16" Aluminum Roller Rocker Arms Speedmaster CNC ported cylinder headsSpeedmaster 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.
