Originally posted by jeffnhiscars
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I have a feeling the diff is causing parasitic loss. Going to pull it out tomorrow anc check it out.
Originally posted by digger
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New cam.
Two other differences are the first one has 3.73 final drive, second has 4.10 with oil pressure relief blocked (~80ish psi oil pressure max), and first had 10w40 conventional, second had 10w60 (~65 max oil pressure) - but don't believe the oil made the difference as they both were hot enough.
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