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Message: <blockquote data-quote="fastgtfairlane" data-source="post: 558115" data-attributes="member: 9545"><p>ive seen a few 306 setups with afr 185s and a good custom cam put in the 330 range to the tires. fwiw, the cobra manifold runs out of air about 5-5500 rpm. its an outdated manifold imo, if you do a head and cam swap the cobra/ gt40 will choke the engine out in the upper rpm range. its a decent low end torque manifold but to get the most out of your engine with the better head and cam setup i would look into the eddy rpm, typhoon, trickflow trackheat setups which will make power till around 6500 rpm with minimal loss at the lower end power. what kind of goals do you want with the car? what kind of budget are you looking at?</p></blockquote><p></p>