Hello im new to this forum...I have a question ...Will the 3.8 BBK valve covers fit my 4.2..........I think this site is great,,,Iv really learned alot about my truck and what I can do to it.....

 

I can't tell you for sure,but it should work. Externally, our engine is just the 3.8 boasting a bigger crank, and maybe pistons (I don't know if it's bored, or only stroked).Just be sure that there won't be any clearance problems with your intake and other stuff if they are taller than stock.