Does anyone here know for a fact that a 4.2 crank/rods/pistons will fit in a early (82- 87) non roller cam 3.8 v6 block ? I have read conflicting information and been told by "experts" that yes it will work and no it will not work. Looking for info from someone that has tried it / done it and has first hand information on the swap.

Also can anyone confirm the 3.8 (82- 87) has 1.6 rocker arms ? I believe the 4.2 has 1.7 and I am thinking of swapping the 1.6 for the 1.7's. Has anyone done this with these engines.

Yes I know a 5.0 is a better, cheaper, option, yes I know I can swap in a newer 3.8/4.2. I want to keep things simple and use what the car came with, I also am not looking for a hot rod but would like to kick up the power a little.

Thanks