Fontana Alum. 12 Port GMC 6 Cylinder Head

Fontana does aluminum racing heads for Chevy II 4 cyl and inline GMC 6 stuff

http://www.fontana-automotive.com/gmc.html

Fontana/Skinner
12 Port GMC 6 Cylinder Head
Specifications:
Material:
• A356T6 Aluminum casting
Combustion chamber:
• Flat
• negative 7.0 CC
Valves:
• Severe Duty Steel
• Intake 2.125 x 6.250 x 11/32
• Exhaust 1.700 x 6.250 x 11/32
Guides:
• Aluminum Bronze
Seats:
Ductile Iron
Competition porting:
All ports Available with additional head bolts
Superior flow and velocity
Superior spark plug location

Other available components:
Rocker arm assembly:
• Needle bearing
• Offset .170 inches
• 7075T6 Alloy
• Ratio 1.75
• Roller tip
Intake extenders
Skinner valve cover
Skinner head stud kit
Skinner injector head gaskets:
• copper
Push rods
Roller lifters:
• Full body diameter, no tie bars
Pistons
Wrist pins
Piston rings
Steel main caps:
• Front 2 bolt
• Centers 4 bolt
Semi <?XML:NAMESPACE PREFIX = ST1 /><ST1LACE>Cam</ST1LACE> Cores


Chevy II 4 cyl.

http://www.fontana-automotive.com/4cylinder.html

 

Anyone ever price a Fontana GMC head ?

 

Call Joe and ask him. I am sure he will tell you.