BRF Trans, what is it's limit?

[88hurstolds]

I have a very low low mile '87 BRF trans, what are the limitations of this trans HP/Torque wise?

I have a mild 455 Olds motor that has roughtly 375hp 500ft/lbs, I currently have a TH400 with a "7.5 3.08 posi behind it but want to upgrade to a 4 speed/ "8.5 3.42 or 3.73

Not sure if I'm going to chew this trans up with basic driving and some track use every now and then...
If so I would rather just let it go to someone wanting to restore their GN and buy one from EA or CK Performance instead...

 

[DR BOOST]

Let it go and get a built one. 500ft/lbs is a lot for a stocker

 

[forzfed]

These tranny's can be hit or miss. My buddy ran stacks of 11's with his 3.8, then put his tranny behind a 455 with nitrous and ran a good number of high 10's. And this is with a stock 200. With a shift kit, bigger pan, bottom filter, and cooler it might not be too bad.

 

[turbo nasty]

More importantly imo is whats the weight of the vehicle its going in

 

[88hurstolds]

Stock weight Cutlass