Pair of High Quality Small Block Chevy Aluminum Bare Cylinder Heads. Valve Stem Diameter: Max Spring Diameter: Hardened exhaust seats Aircraft quality high grade aluminum alloy Multi-angle seat design for improved flow at low lifts Advanced port design for improved flow at all lifts Can be used either early or late (Vortec) intakes Can be used either perimeter bolt pattern or centerbolt valve covers Threaded accessory holes in ends of heads Retains stock 23 degree angle and intake/exhaust bolt locations Thick deck to resist warping and allow for additional milling if desired Does not require offset rocker arms Suspension & Steering Ships within 1 business day Free returns within 30 days Brand new parts, ready to install Questions? Message us anytime via eBay Powered by SixBit's eComme.
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