Re: 383 build
If you have a 400 block than build a 400+ motor it will yeild more torque and be reliable also. 4.155 -.030 over/3.750 stroke=406.7ci or my goal
4.165-.040 over/3.865 stroke=421ci. Add a brodix track one topend kit and you'll have some serious hp but to make it all work buy a kit with cam heads,intake etc...
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