I agree with Tom again. Once you start going with bigger cam and more power. Having more control of the idle would be nice along with power valves. We have ran 10.14 at 129mph with our tri-power but the carbs have been extensively modified to do it. Our intake flows right 300cfm, biggest improvement I can think of to do to the intake is put more material in the roof for porting. If BG is really going to do it they better be able to out perform out stock setups. With completely stock 65 tri-power (it was just port matched to our HO heads) ran 7.0s in the 1/8th at 95-96mph.
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