Big Block Chevy, 396 CID Bare Block – 3935440

Big Block Chevy – 396 CID / 350 Hp, Casting No.

3935440 (RPO L34);

Pad No. TO416MX / 18N425338.

Block sourced from a 1968 Camaro SS.

Listing includes bare block and main caps.

Matching oval port heads (3917215 – 101cc chambers) separately available.

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Pad No. and MX suffix code decode as:

Tonawanda (NY) Engine Plant; man. date 04/16/1968; 396 CID / 350HP.

Suffix Code (MX), designates a 396 – RPO L34; specs: Holley 4-Bbl Carb; high lift hydraulic cam; small-port cast iron heads; 10.25:1 CR; 2-bolt mains; forged crankshaft.

Block specs:

Prod Year = 1968

Bore = 4.094″

Deck Height = 9.8″

Source: How To Rebuild Your Big Block Chevy – Tom Wilson, 1983.