[mud.man.rj]

A 396 head is not a good breathing head like a 454 head. The 396 punched ,030 from Factory is a 402, that is why the block is 396 and the heads 402, so really a 402 your working with that is punched out another .030 to make it .060 over. No big deal but still to much cam, it would work in a lighter car with a bigger stall, but even then would have to push it a bit to make it work and not as enjoyable to drive. You having a truck, heavy, makes it even worse. I have built a lot of engines for trucks, 2wd and 4wd and also a lot of cars, you won't be happy for sure, drop down in size so you only have to do it once.