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 Knell set the Comp rockers...  Knell set the Comp rockers to have zero lash, plus a quarter turn.  With the valves set, we popped...  With the valves set, we popped on the valve covers, installed the distributor, and hooked up the fuel line and carb linkage. We then headed to the dyno where the little 302 produced 310 hp at the wheels.  Demon Carburetion supplied...  Demon Carburetion supplied us with a 650 (shown) and a 750 Speed Demon to try on the 302. But, lo and behold, the 575 proved to be the strongest of the bunch. "We rate our carburetors based on average airflow or cfm," says Doug Schriefer of BG. "So the cfm number is not an end-all, be-all number, as most people think." In other words, the Demon 575 might flow like a 650-or-larger carb from another manufacturer.  In dyno testing, we found...  In dyno testing, we found the 575 carb outperformed the 650 by 10 hp. Surprisingly, the 750 made 310 hp, just like the 575, but it was down on torque all through the midrange by over 10 lb-ft.  The next month followed with...  The next month followed with the addition of a Holley fuel pump, Comp Cams 1.6:1 Magnum rockers, and a Lunati camshaft.  Lastly, we popped on a set...  Lastly, we popped on a set of AFR 165 Competition Package cylinder heads along with new Comp lifters and Manley pushrods. The engine reached 310 hp with a big, flat torque curve producing a peak of 321 lb-ft. Horsepower jumped a total of 102.2, and we now have 1,000 more useable rpm.
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