Originally Posted by Doc Olds

You find a local reputable transmission shop, sit down with the owner and tell him you want to rebuild a solid performance Trans capable of handling what you have done to your H2, have them add in your choice of Monster Transmission parts..... like a Beast Sunshell and so on. Price it, call around. Your H2 is HEAVY and shaped like a brick. Your stock 4L60E can be built to handle way more HP/TQ than what your puppy is making, it is all a matter of $$. Now is a good time to think gears as well.

When you drive old stuff, you need to make friends with people that work on old stuff, like the Transmission Guy, Radiator Guy, Mechanic Guy, Ring and Pinion Guy, Head Milling Guy, etc.... This all used to be basic knowledge for gear heads back in the day. Now is your opportunity to hook up with the local performance Trans guru, not the slob fixin minivans.

When you drove a 400HP/530TQ Muscle car, you knew everybody you needed to help with things that were beyond just maintenance and parts swapping. I sure do.

Originally Posted by Tommy454

Not sure.