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I'm open for any design suggestions on this motor. Let me make it clear as well that I am NOT going to put a 525+ lift cam and that I'm not building a racing motor.



Well then you are living in a fantasy world with a car as big as you are dealing with , you are going to need compression and a cam with duration to get your HP figure and it may not be condusive to running the A/C ... BUILD A 400 BASED STROKER and it will be easy as pie and LOOK STOCK when you open the hood.

As far as the comparison between the SBC and the 383 to get compression it takes the same thing , BIG DOMES and SMALL combustion combustion chambers , the chevy has the small combustion chamber but you need a dome to get 10.0 in that SMALL BORE with the short stroke.