Quote"
How strong are the 250 blocks?
Could I use the OE Crank?"


With about 1000 HP,it seems these engines will stay together, with stock crank & maincaps.


Guys in Brazil with there turbocharged 250's are making up to 1400 HP with stock cranks ,stock main caps,no girdle.
With 1/4 mile times of 8.2 ,that is the record for a car.IIRC.

That is about the limit it seems for stock items.
Just know that @ these power levels,the cranks do walk around & they do eventually break. Not bad for stock components though,,right?

Now this information I am telling is what I have been told from friends in Brazil.
But,,, I have seen the videos on the record setting Dyno HP & 1/4 runs.

MBHD


12 port SDS EFI