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Normally Aspirated 5.4L Four-ValveThe combination of the SHM 5.4L short-block, ported Navigator heads, and Stage 2 cams produced an impressive normally aspirated combination. The Sullivan intake was on hand to allow the motor to produce effective power past 6,000 rpm. So equipped, the 5.4L produced 441 hp at 6,500 rpm and 387 lb-ft of torque at 4,900 rpm. Despite the rather low static compression (this is a turbo motor), torque production exceeded 375 lb-ft from 4,300 rpm to 6,100 rpm. What we had was an efficient normally aspirated motor just begging for boost. View Related Article
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