Originally Posted By: GMBoy
I think, but am not positive because the motor has never been apart, that my 87 Buick Grand National LC2 3.8 Turbo has nylon gears. I've been meaning to do a few little upgrades and new timing chains and gears will be on that list too!
That's scary, I thought all 90 degree GM V6s used steel cam gears (I'm 99% sure Chevy did). I figured the design of a 90 degree V6 was too flawed for a nylon wonder to guarantee 100K miles, while all (IIRC) US manufacturers were able to get them to work in light duty V8s.
Makes me wonder what is in my Buick 3300 with 187K. The little odd ball is supposed to be as good as the 3800, but I have concern at the 200K mark even with a metal gear, but it does have a tensioner.