Re: 1964 GMC 1500 "crustine" semi- build.
And here is a comparison of the 3 manifolds.
Stock, 4 down to 2 adapter, and the true manifold.
Surprised at how clean the plugs were to. All that fuel and limited air and burning nice an clean with stock points and a hot coil. lol! Really hoping the extra air will help. It should. Later guys! More updates to come!
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