TorqueFlite Burnouts

I found that way interesting too. stock drum better have a rev limiter at below 6000.
aftermarket (steel not cast) 8000 rpm max.
All alu. 8800 rpm max.
These are all to distortion not fail, because if i'm going to spend big dollars on a part like this...........i want some fudge factor figured in.

my next rebuild will have one of these.....just can't decide on the all alu. or the steel.......