Pontiac Forum - Pontiac Discussion Forums

Pontiac Forum - Pontiac Discussion Forums (https://www.pontiactalk.com/forum/)

- General Tech (https://www.pontiactalk.com/forum/general-tech-11/)

- - 301 crank, 400 block (https://www.pontiactalk.com/forum/general-tech-11/301-crank-400-block-165/)

301 crank, 400 block

I am wondering if a 301 crank will bolt into a 400 block. I can get rods to fit if so, but i am trying to build a 4.12" bore, 3" stroke, Ram air headed smallblock of about 320 cubes to make any chev 350 run and hide. I have heard the 301 has the same 3" mains as a 400, but then also i have heard it has 2.50"s. Any help is greatly appreciated.

RE: 301 crank, 400 block

Quote:

301 crank will bolt into a 400 block

Quote:

ORIGINAL: 81turbota

I am wondering if a 301 crank will bolt into a 400 block. I can get rods to fit if so, but i am trying to build a 4.12" bore, 3" stroke, Ram air headed smallblock of about 320 cubes to make any chev 350 run and hide. I have heard the 301 has the same 3" mains as a 400, but then also i have heard it has 2.50"s. Any car parts help is greatly appreciated.

i guess it needs the crank turned, rods resized and new bearings and gaskets before it will fit.