Back in about 1996 MM&FF did a test of MAC equals, unequals, and longtubes. From what I remember the equal lengths made about 2 more ft/lbs at about 3000rpm, the full length made about an extra 15 ft/lbs and at the top end they were all about the same with the longtubes having a couple more, the equal length actually made 1 less hp than the unequals. They're supposed to scavenge more than the unequals to make more torque but if you want scavenging step up to the longtubes, kinda wish I did.
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393W: AFR 205's, hydraulic roller, TKO600.
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