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5.0L (1979-1995) MustangTechnical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.
also its supposed to reduce the temp of the air in the manifold, cooler charge = more power,in reality thedifference it makes is probably marginal at best.
it moves the hp up or down in the rpm range......cant remember which direction. the change is minimal. i had a 3/8" spacer on my old motor. my new motor has a 1" spacer but that was just so i could get better valve covers under the upper manifold
it moves the hp up or down in the rpm range......cant remember which direction. the change is minimal. i had a 3/8" spacer on my old motor. my new motor has a 1" spacer but that was just so i could get better valve covers under the upper manifold
i know after i put mine on it moved peak hp up 200 rpm and dropped peak tq like 400