I'd drop the K-member to replace heads on a 4th gen. The extra work is completely worth the saved frustration.

As for the rod bolts, you can change them if you want. It is added insurance, but it isn't necessary.

 

I was checking some threads on resizing bearings. How often does it effect bearing on new bolts an torque. A lot say ĺeave alone unless you resize. As far as I know there isn't any reason to replace except for insurance. My horsepower increase and rpo level are not ridiculously high.

 

What year engine do you have? If a 2000 or newer, I wouldn't bother changing them. If you are compelled to change the rod bolts, get the LS6/Corvette bolts. They're a steal, price wise. Take the old ones out, one bolt/one rod at a time. Then replace that bolt. Torque. Now, do the other bolt on that same rod. Continue with the remaining rods.

 

It's 02'. sounds like most people are telling me not to mess with them. Is it pretty common for you guys be changing heads without pulling the engine. I've heard from a few that it's easier to pull it then to work under the cowl. I'm just trusting my mechanic.

 

Mines an 01, stock bottom end, all stock bolts, I'm turbo'd putting down 529rwhp and upgrading bolts wasn't even a concern for me. But like everyone said, if it makes you have piece of mind and you have the money, then I'd go an ad and do it.

Edit: I had the kmember out, the trans, and the rear end and could have easily done it then too.