WOW! could not believe it when the car ran 11.02 off the trailer so I had to make a change and get a 10 out of it. I swapped out my 30% underdrive pulley for my 50% one and the car ran 10.92@119.78 mph. I was just blown away with a production 23° head that has 1.94 and 1.5 valves in it. Take that "LS" lovers.
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SBC With 2nd Vortec Head Test Goes 10.92
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