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  1. 2V verses 4V engine?

    Classic Cougar Tech
    Ok when I bought my 67 XR7 it had a 2V set up on it. Which it still has. My vin says it is supposed to be an A code 4V engine. Question is, is there any other difference in the engine of a 2V and 4V other than the intake manifold and the Carb? I want to get it back to a 4V setup. Is there...
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