Thread: 1988 350 with high lift cam = computer problems?

Tweet

I'm new here. Bought a Rod with a 88 Vette 350 w/cam. When cold it sounds like rods are loose. Stops when it warms . I'm told that it takes a few minutes for the computer to recognize it and correct. Anyone heard of this?

Welcome aboard Casper! Good to see you here.
If it is truly a rod noise, or even a roller rocker set sounding off, it is common for them to be a bit noisy until full operating temperature. The parts expand when at temp and "take-up" some extra space, tolerances get closer. I don't believe the computer is involved because by 88 they were "learning" and self correcting. They didn't need to re-learn at each startup cycle.

If at full temp and still hearing noises, then you'll need to investigate.

An added welcome, and I agree with Mike. Your ECU learns once and then holds that base until it is re-flashed or powered down for an extended time. I'd say chances are slim that the computer is causing noises in your lower end or valve train.