I got one for a 383 but I guess it was the same as the 340 carb. I figured that and a Racer brown or E4. I hope to find a cam that will work with the pistons that are in it. That also depends on if I can get a thinner head gasket (MLS?) to bring the compression up that much more. I'm thinking this could be a good mpg engine, have a wide rpm range, and still be able to efficiently pass a semi with a 3.21 SG.