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Ziegelsteinfaust · 12-26-2012, 11:21 PM

MPG has more to do with the whole, and not just a part. A 383 with the right set-up could knock down right at 20mpg, and keep up or beat many new vehicles.

I don't see any cons to the 383 engine in a truck, and it doesn't have the Siamese bore of the 400. I would build a Vortec 383, keep the cam under 268 at .50 thousandths, and enjoy.

Stock heads are good for about .500 lift which is just fine for a DD or torquer. You could step up too Edelbrock ones for about 50 more hp.

12-26-2012, 11:21 PM	#2
Ziegelsteinfaust Registered User Join Date: Dec 2012 Location: Temple City Posts: 3,666	Re: Motor Question MPG has more to do with the whole, and not just a part. A 383 with the right set-up could knock down right at 20mpg, and keep up or beat many new vehicles. I don't see any cons to the 383 engine in a truck, and it doesn't have the Siamese bore of the 400. I would build a Vortec 383, keep the cam under 268 at .50 thousandths, and enjoy. Stock heads are good for about .500 lift which is just fine for a DD or torquer. You could step up too Edelbrock ones for about 50 more hp.