Originally Posted by Pacnorthcuda
Originally Posted by Sniper
Didn't they thicken up the material around that time to address the pushrods thru the cup issue? Or was that just the B/RB's?


Yeah, wasn’t that a Mopar Performance claim? ….that the rockers sold in the 80-90’s were thicker and rods wouldn’t punch thru?


Having compared the rockers from a 64 413 and a 78 400 I can verify the 78's were thicker.

I can't say the same about the LA's though, never had the opportunity to do that since I never owned an old enough LA with stamped rockers.