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TSP revised the cam lineup after BTR did theirs, so the lobes are easier on the valvetrain components. That being said, for a streetcar I would do the BTR 220. The 225 is only worth about 5whp peak and you lose some low midrange. Might not be a big deal with a manual car, but the 225 on up is where you need to start considering an intake manifold that makes power out to 7k rpm and plan on shifting it around there. I wouldn't be surprised if the 220 cam is faster with the stock ported manifold. You have to look at power under the curve. I would do a LT2 minimum on that setup.
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2016 NFG SS A8/Whipple 2.9/Fuel System/Flex Fuel
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