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I have a 91 z24. The book shows that the 91 year 3.1 has a good bit lest power and torque than the 92-94 years. What gives? Is it the ECM or cams or something else?
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i thought they were the same.Andy
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The book I have shows a big differance in torque. I think it was 30 lbs. Don't have it in front of me. It's up there. Just the 1st year 1991 3.1. I was wondering what they changed.Comment
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uh, no, from 91 to 92 tq went from 180 to 185ft/lbs. It's in the computer tuning.
Cammed 3400 --> 224whp 210wtq
Cammed 3500 --> ???
1 of 5 3500 J-BodiesComment
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Yep, GM fiddled with something in there. engines are internally the same.Originally posted by RedBird View Post
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