Quote Originally Posted by Brock
yea the basic rule of thumb for domestics is that stock trani and rear are fine to 150 hp / tq over factory then you should beef it up a lil to be safe
rule of thumb.... wow dont get too technical on us.

Some cars have much stronger trannies/rear ends than others.. there is no rule of thumb.

For example you can run 6-700 hp on the stock tranny in 03-04 cobra and be fine while the t5's that came in the earlier foxes can barely handle
a stock 5.0.


A stock 8.8 rear end can take 600hp but the GM 7.5 10 bolts that came in the f-bodies most often cant even take the power of a stock motor.