It makes 12-13" of vaccuum at 900-1000 rpm with a bumpy idle. You need to feather the gas to get it moving, it is a bit grumpy. I'm taking the car to the dyno shop after work, will post my results later. Last time I made 365 at the wheels with 220cfm heads, smaller Ultradyne hydraulic, 2 1/2" X exhaust. Now I have 250 cfm, Roller cam, 3" exhaust....Drives pretty good on the street, will blow the tires in 1st and 2nd gear anytime...
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