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Since 1952
in 1984 Monte Carlo
in 1984 Monte Carlo
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302, 327, 350, 400, 1.680 in." Inside Diameter

Inside Diameter: 1.680 in."

Outside Diameter: 2.100 in."

Overall Thickness: 0.425 in."

Valve Seat Material : Ductile Iron

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Chevy LS V8, Chevy Small Block V8, Steel, Black Oxide

Material Type: Steel

Thread Pitch: 8mm x 1.25

Finish: Black Oxide

Under Head Length: 1.770 in."

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Many Engines, 0.655 in. Thread Pitch

Thread Pitch: 0.655 in.

Thread Length: 1.000 in."

Thread Pitch (2): 3/8-24 in.

Thread Length (2): 0.750 in."

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Many Engines, 3/8-16 in. Thread Pitch

Thread Pitch: 3/8-16 in.

Thread Length: 0.880 in."

Thread Pitch (2): 3/8-24 in.

Thread Length (2): 0.655 in."

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265, 267, 283, 302, 305, 307, 350, 400, 262

Inside Diameter: 1.400 in."

Outside Diameter: 1.650 in."

Overall Thickness: 0.375 in."

Valve Seat Material : Ductile Iron

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389, 400, 421, 428, 455, 302, 327, 350, 400

Inside Diameter: 1.920 in."

Outside Diameter: 2.400 in."

Overall Thickness: 0.312 in."

Valve Seat Material : Ductile Iron

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