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Post Time: 2025-07-17

This short is a single dyno pull from Gold's Garage latest video. In addition to the cam we we test 3 Holley carburetors, two vacuum secondary carburetors and one double pumper. Our carburetor expert Dave Forrest describes the details of each selection. This video also proves the value of dyno testing, as we picked up 38HP form start to finish. Final results from this 389 Pontiac GTO engine were 358HP and 420 ft lb. torque.

Comp Cams XR276HR DYNO PULL Watch For The Full Length Video! #pontiac #compcam #horsepower For Country: United States. City: Murrieta, Naperville, Norman, Palmdale, Portland

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