Which stroker kit for 470" b-engine

the very long stroke of 4.25" for a 383 really is too much for the bore size, plus the piston is super short. All out racing-sure; street time- would not do it.

Go buy a 400 block for $100 & have it done to 512. It uses the same stroke crank & rod length, but get's the C.I. from the bore size- which is more equal to the stroke.

700HP would be easy with a solid cam north of .600 lift or better yet- supercharge the beast and make it purr like a cat with a smaller cam. As Moper said: 3 variables to consider.