I can’t help with a shop recommendation. But for your situation, I would do a full rebuild with upgraded forward clutches and pan off style upgrades. A custom built valve body will do you wonders.Sorry pulling a 8000 lb trailer , 5.9 Cummins 450 hp . Full time RVers
He is absolutely correct. I totally mentioned the wrong pack.Ya I can’t help with shop recommendations in that area either. I saw a recommendation posted on upgraded forward clutches. This gets complicated as the forward clutches actually sit farther back in the case and the direct clutches are more “forward”. The forward clutches are probably the least to be concerned with. They hold fine with the 4 clutches from the factory. The direct clutch (which location wise is the forward clutch and probably what the other poster was referring too) is the one you want to consider upgrading.
Factory count is 5 clutches. I ran 7 from the advice of my VB builder and it works really well.
With that said I wouldn’t get too caught up in clutch counts with your use and power levels. Factory counts with upgraded clutches (Raybestos GPZ seem to be the most universally liked and what I used) on a HP VB will hold your power levels with ease.
A valve body with good pressure will not work well with a 5:1 2nd gear band lever, which is stock on 48RE. Keep this in mind when going over parts lists. If it really is a HP VB the lever ratio, and material, needs to be addressed.
A reputable builder that you can trust will eliminate the need for all of this information. I found some, just wanted to do it myself. It didn’t save me a dime! But I had A LOT of fun!
I recommend finding a good shop (ensure they are good) and you can sit back and relax knowing it’s in good hands! There’s a lot to learn here.
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