The "Performer" intake fits all big blocks (400, 425, 455).
Go to http://www.ucalgary.ca/~csimpson/Tech/Block_ID.jpg
and http://www.ucalgary.ca/~csimpson/Tech/Head_ID.jpg
Then look at your engine and tell me what you read.
C.J.
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Home of the 1971 Cutlass Supreme convertible Super Karate Monkey Death Car.
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