1966 396/427 425hp Heads With GM Performance Aluminum Intake - $2,800 (Georgetown Ga)

1966 396/427 425hp Heads With GM Performance Aluminum Intake 1

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condition: like new

make / manufacturer: GM

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Forsale are set of 1966 396/427 425hp heads. Casting numbers are 3873858. These are rectangle port heads. They are fresh from the machine shop. They have been completely rebuilt. They have been cleaned magnafluxed and checked for cracks. They have brand new seals and valves that have been upgraded to 2.25/1.88. The intake runners are 325 and the cc’s are 109. The valvesprings are setup for the factory mechanical solid lift camshaft. New guides have been installed. The intake and exhaust ports have been polished. Decks have been surfaced for cleanup. These are a super nice set of heads that are ready to bolt on. I do have the screw in studs and guideplates for the head pictured without them. Also included is a GM Performance 454/502 HO aluminum intake. This setup would be great for large cubic inch big block build. Price is $2800. Call show contact info .

post id: 7988277000

posted: 2026-10-22 20:52

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1966 396/427 425hp Heads With GM Performance Aluminum Intake - auto...

Forsale are set of 1966 396/427 425hp heads. Casting numbers are 3873858. These are rectangle port heads. They are fresh from the machine shop. They have been completely rebuilt. They have been...