I have a completely rebuilt 10 bolt with yukon axles, yukon gears, eaton trutrac posi. what is the safe limit for tq/hp output that it will handle using only street tires? it has 4.10's and 275/50 r16 tires.

I have a 327 that i am looking to get 500hp/450tq from

OR

considering a 400sbc with 600hp/600tq.

not drag racing or any sort of trans brake. just don't want to shred it when i mash the gas from a stop or on the highway.