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I am thinking of putting Thorley Headers on my 1968 302. The engine has a Edelbrock Manifold, Holley Carb and Mallory Electronic Ignition. I don't want to sacrifice low end torque for upper end horsepower. Has anyone dynoed a mild 302 wth long tube headers? What is the torque increase/ decrease at say 3,000 rpm's? 4,000? Thanks for the input.
Stewart A. Smith
1968 Cougar XR-7
Stewart A. Smith
1968 Cougar XR-7