Originally Posted By: ls1mike
I don't know, it is just not the case in the 3800 or LS world. Lots of testing and lots of high mileage modified examples of the those. I am only speaking to mechanical mods. "Visual" mods are in the eye of the beholder and totally different.
As far as my GM stuff, they come real mild from the factory and they know it.
Scott settlemire
He has said a bunch of times at seminars and talks. There are plenty of aftermarket parts for the F-body that are just as good as stock. Just look at the GM performance catalog. Cams, headers, exhaust, heads, intakes and complete long blocks. All engineered by GM. The stuff works. I know.
And completely agreed on specific platforms. Some had weak spots only addressed by the aftermarket.
But absolutely no one tests durability and longevity like the OEM does. They simply do not have the money, time, or equipment to do so. Computers allow them to extrapolate some data, but they are no substitute for the real world proving grounds BEATINGS that the OEM's do to every model...