Whats up guys.
I own a 1991 F-250 4x4 with a 302 and C-6 trans.
I have alittle problem with my new flywheel i bought from B&M.
Acouple of weeks ago i was driving the truck pretty hard when i threw the flywheel weight off and cracked the the trans bell housing.
I just replaced the trans and put a B&M flywheel on and i have alittle vibration from 1200 rpm's to 1500 rpm's
I also replaced the harmonic balancer......that wasn't the problem either.
Any ideas guys?
Thanks
Jerry D

 

Well it turned out to be the wrong flywheel......damn parts guy ordered the wrong part.
I went out and bought a new one from Napa and it works great.........no vibration.

 

it could be that, or the flywheel might not have been properly balanced. i've seen that happen too