How is 97-98 different?
03-03-2004, 01:58 AM
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How is 97-98 different? I have been reading and have seen that the valve covers are different I was wondering if there is anything else that is different.
03-03-2004, 02:31 AM
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Essentially, no. The "perimeter bolt" heads are the biggie. As with every year, there were always slight changes in the ports and/or chamber. The rod bolts and pushrods were troublesome. GM put out a couple of tech bulletins to their dealers about replacing them if there was a problem. They advised to tell people to keep it under 5800 RPM, if I remember correctly. Why? Some rod bolts broke, and bent pushrods were fairly common.
03-03-2004, 02:46 AM
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SO will heads off a newer LS1 go on mine? I was gonna get AFR heads if they ever get there act together or will I just have to get different valve covers?
