2020 GMC
Well maybe the truck builders are finally listening to the RV crowd for a change: Just got a brochure on the 2020 GMC HD trucks. 1. They have finally made the bed rails lower 2. They have a ...
Forum Discussion
Huntindog wrote:
I was told by a long time GM engineer years ago, that when they tried 4.10s behind the D/A that the pinion would not hold up.
That may be why the AAM went from 11.5" to 11.8" to 12" over recent years.
