Designed for street 396-502 c.i.d. big-block Chevy V8's using general duty oval-port cylinder heads. Intake manifold #2561 is for marine applications and features brass lined water passage and brass flange inserts to cover rear water openings. Will not fit under hood of Corvette without hood modifications. Will not fit tall block V8's. May be used with OEM or aftermarket carbs. Will fit 1965-90 oval port heads.

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