I am selling a pair of GM PERFORMANCE PARTS HEADS.

Part # 25534431 

These heads are VORTEC style heads and need a VORTEC style intake.

These heads are brand new ( never bolted on ANY engine). I decided to go big block after I purchased these heads. 

Here are the specs.

Intake runner: 206 cc

Combustion chamber 65

Ex. Valve 1.55 in. In. 2.00 in.

Max lift cam ( with supplied springs) 0.545 inch  

Material : Cast iron

Price new $580.00 each

Super Chevy magazine calls these the most bang for your buck head out there.