Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - A few changes to 540 hp carcraft buildup... what kind of hp loss? guesstimates please
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Old 07-27-2003, 02:03 AM
5-7heaven 5-7heaven is offline
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howziit guy!

JMO, you'll lose more than 50 HP engine size at 6000rpm,but not just because of the 1 5/8" pipes. the 383 might peak below that rpm.

from 1500-6000rpm, your engine will need 665cfm or more, and that single plane manifold will not perform its optimum as an rpm intake(or similar), especially with a teeny 600 carb on a street car.

my choice: 700cfm carb/edelbrock rpm intake(or equivalent)/1.75" headers/2.5" FULL exhaust system.

on DDD2000, the single-plane intake will show an advantage over the dual-plane, with any carb size from 390-850cfm. in reality, it would be a disappointing mismatch for a street-strip.
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