Usualy when in tune the boosted motors appear to be easier on blocks. 3 examples; stock 340 block blown roots 650hp, stock 360 block (and cast crank) turbo 850hp, stock 440 roots 850hp. Non have broke. First two with many runs and street use. I run a N/A Mega block at over 900hp. I personally have 525 passes after buying used where it made similar power for yers.
Doug