As already stated the comp cam you selected is not the correct cam for your build and it would idle terribly and have no power. That cam would work if you had ported heads, headers, a high stall converter and 3.90:1 rear gears and then you would need forged pistons and rods etc and it would be noisy and not too much fun to drive on the street. I second the Lunati VooDoo # 10510700 cam that would be a great cam for the 326, good idle great off idle power and lots or torque for the small cube long stroke motor. I also agree the RPM manifold is way wrong for your build, the best manifold would be the factory 68-72 Q-Jet manifold and forget about the Holley. And make sure you use made in the USA Hy-Lift Johnson lifters unless you want to have ticking lifters. Good luck with your build.
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Tim Corcoran
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