Interesting GM Aluminum Heads Experimental/Prototype Big Block Chevy

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Interesting GM Aluminum Heads Experimental/Prototype Big Block Chevy

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10-09-2021, 02:09 AM

Lee Stewart Lee Stewart is offline

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3946074: ’69 rectangular port, open chamber, 2.19- and 1.88-inch valves, aluminum. Used on 427ci L88 and ZL1 engines.

3946074: ’71 rectangular port, open chamber, 2.19- and 1.88-inch valves, aluminum. Used on 454ci LS6 engines.

https://www.chevyhardcore.com/tech-s...-head-id-0219/

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