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Can you put a 400 crankshaft in a 350?

Updated: 10/26/2022
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13y ago

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yes but to do it u must bore your 350 30 over use 400 pistons and 6' rods that makes ur 350 to s 383 stroker engine

actually dont you have to bore it 60 over and stroke it at 3.75 from the stock 3.48 and then throw 6" rods in it or use the 5.7" and get the machine shop to balance it. I am in the process of trying to find out a way to turn down the 400 crank just a slight bit and and adjust the stroke of my 350 to it and the main journal a little bit and then put the 6 inch rods in it and make sure the height lines up! anyone have any tips on a project similar to this???

My VersionYou don't need to bore 30 over

You need: Correct pistons for modification, 400 crank, 400 rods, HArmonic balancer and flexplate for 400

This is the basic 383 but to be a "true" 383 it needs the 30 over size pistons.

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Q: Can you put a 400 crankshaft in a 350?
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