The Cross-Ram Wedge (Long Ram 413): 1959 Dyno Tests

Peak horsepower across both tests was 289, not bad for a 1959 engine; corrected horsepower reached 303 hp at 4,400 rpm, while corrected torque reached a whopping 464 lb-ft at a mere 3,000 rpm. The final 1960 413 engine produced 375 horsepower and 495 lb-ft of torque.

Our source wrote: “the dyno tests were conducted in cells 12 and 13 of Building 135 in the old Highland Park complex.” The test sheets were found nearby, apparently discarded.

The cross-ram wedge (or “long ram”) V8 engines were used in the 1960-61 cars, and are not the same as the later Max Wedge (thanks, John Veach).

Main Max Wedge Page  | Mopar Engines Page

(Also check out our history of the RB series engines)

Copyright © 1998 Steve Boelhouwer

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