PROCOMP 320cc Aluminum Big Block Chevy Cylinder Heads BBC - $475 (bloomington)

PROCOMP 320cc Aluminum Big Block Chevy Cylinder Heads BBC 1

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model name / number: 9528545786

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Best NEW price I could find is Speedmaster at $560.99+ Tax= $605.00 approx. Price is per head, must buy both. PROCOMP 320cc Aluminum Big Block Chevy Cylinder Heads PC3021 .Pro Comp 454 Aluminum heads. Part # PC3021. Rectangle port, 115cc open chamber, 320cc runners, 2.25 intake valves, 1.88 exhaust, 3 angle valve job. I purchased these (New in their Boxes) 10 years ago and never used them. So, I'm selling them at a loss. Call (952)854-5 seven eight six

High Grade Aluminum
Bronze Valve Guides
Hardened Seats
Factory Heli-Coil Rocker Stud Threads
Advanced Port Design for greater flow
Here's a more detailed breakdown:
Material: 356-T6 aluminum.
Intake Runner: 320cc.
Combustion Chamber: 115cc.
Intake Valve: 2.250".
Exhaust Valve: 1.880".
Spring Pads: Machined for 1.740" to accommodate the largest roller springs.
Valve Angles: Intake 24 degrees, Exhaust 15 degrees.
Valve Lift: Maximum valve lift is 0.550 inches.
Outer Spring Diameter: 1.450 inches.
Flow Numbers: Approximate flow numbers at 28 inches are: 67.9 CFM at 0.100" lift (intake), 137.4 CFM at 0.200" lift (intake), and 204.2 CFM at 0.300" lift (intake). Exhaust flow numbers are also available at these lifts.
HP Potential: Up to 748 HP out of the box.
Sold as: A pair only..Must buy both
Other features: Accessory holes for factory accessories, bronze valve guides, and premium hardened seats.

post id: 7885616217

posted: 2025-10-01 18:13

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PROCOMP 320cc Aluminum Big Block Chevy Cylinder Heads BBC - auto...

Best NEW price I could find is Speedmaster at $560.99+ Tax= $605.00 approx. Price is per head, must buy both. PROCOMP 320cc Aluminum Big Block Chevy Cylinder Heads PC3021 .Pro Comp 454 Aluminum...