I have a TH350 with a 2800rpm stall, B&M shift kit, and trans cooler that has little miles on it. will this set up hold up with a 500hp 510tq n/a SB?

I have no idea how much they can handle

thanks in advance!

 

depends how it was built, just a stock 350 with a shift kit, no

a 350 with good clutches and koleen steels and new bushings and a quality shift kit and a large cooler then yes it will hold fine

 

Depending on what is in the transmission as far as parts and their condition will determine if it will handle the HP & torque you want. The B&M valve body kits will usually have very firm part throttle 1-2 shifts which are hard on the intermediate sprag race, other than that, you can try it and see what happens. If you decide to build this transmission, there are a few things that need to be addressed to make this a very reliable unit, and I can help you out there.