Thread: 1970 Ram Air IV vs. 1971,72 455 H.O.
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Old 12-14-2013, 12:28 PM
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necdb3 necdb3 is offline
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71 and 72 HO's are near identical. The only difference was in how the horsepower and torque were rated. Gross (71) and net (72). No pollution controls on either except TCS.

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