Butler Performance Inc. - Cylinder Heads / Top End Kits
One of the most important components to an engine's performance is cylinder heads. Butler Performance is the main source for stock and performance cylinder heads for your Pontiac.
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Send us your Edelbrock heads for custom CNC porting. We can arrange to ship your heads to us where they will be inspected CNC ported using our Butler CNC Porting Process.
Bare 356-T6 Aluminum, 400+ cfm flow out of box, 50cc combustion chamber, 310cc intake port, Will accept up to 2.300 intakes, & 1.800 exhaust valves, Guides & seats included