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Chevrolet Small Block Head Casting Numbers. Aluminum, LT5, ZR1, DOHC, 32-Valve, drivers Side. This casting # has been used in many different versions of this aluminum 18′ and 15′ Bowtie race head. Different chamber volumes, port volumes, port locations, valve sizes, etc. were used.
8 Ιουν 2021 · Learn how to identify Chevy cylinder heads on your early cast iron, late model aluminum, or aftermarket and Vortec Chevy Small Block (SBC) with our Chevy cylinder head identification guide.
Small Block Chevy Cylinder Head Identification. 1971-75: 330545 307,350 1.72 1.5001 74 1971-73: 330862
The easiest way to reference any production head is with the last three digits of its casting number. The most famous heads are the 461 and 462 heads that offer 160-cc intake ports, 64-cc chambers, and 2.02/1.60-inch valve sizes.
12 Δεκ 2018 · Casting number 12558062 is a Vortec head that is available from Chevrolet Performance. It is completely assembled with 1.94/1.50-inch valves, and 64 cc combustion chambers. It can be machined for 2.20/1.60-inch valves.
Heads from Dart, EQ, and RHS can make big horsepower numbers right out of the box, and they don’t cost an arm and a leg! This Tech Tip is From the Full Book “ HOW TO BUILD MAX-PERFORMANCE CHEVY SMALL BLOCK ENGINES “.
Use these casting numbers to identify the heads you have. Small Block Casting numbers
