Cylinder Head Comparison Test 170 Pro 1 Heads
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Installation of the as-cast 170 Pro 1 heads dropped peak power even further. Equipped with the smallest of the as-cast heads, the 363 managed 510 hp at 6,500 rpm and 472 lb-ft of torque at 5,100 rpm. Compared to the 195 heads, the power was down everywhere. The 170 heads would be much more at home on a milder application than our roller-cammed stroker. View Related Article
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