Identifying a Ram Air

Short answer: Ram Air was a 400-only induction option (open hood scoops, an under-hood sealing pan, and an air cleaner with a rubber ring that seals to the pan), with internal engine differences. Verify it by the engine block code (2 letters under the right head):

Also check the partial VIN (right side of the block near the timing cover), the head numbers (on the center exhaust-port boss), and the date codes (block, heads, manifolds, firewall data plate). A 400 hood and engine added to a 6-cylinder or 350 car doesn’t make it a real 400/Ram Air. To know how the car actually left the factory, get the PHS documentation (~$35, phs-online.com).

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