Drove a '63 Polara back in the '70s with a 426 maxie, factory 13.5/1 pistons, 308deg. 510lift solid cam 3447afb carbs( factory jetting ) on factory crossram. Ran on Sunoco 260 with total timing set at 32 through the mufflers on the street, 4.56 rear. Used the car in temps down to 40deg., even 12 miles back & forth to work. I would fire it up, warm it up a little, shut it down then throw a heavy moving blanket over the whole motor to build heat in the intake for about 15min. & you were good to go. It didn't like idling in gear so the technique was to push it in neutral at a light, on green, push it in low & feather the thottle. 11" street converter was a little too tight for this motor, other than that it ran real nice on the street. Didn't have any of the so called drivability problems that the "experts" always claimed these cars had. Stayed on top of valve adjustment & timing (factory Maxie dual point mechanical adv. distributor) & no problems. Would go 12.00s at 118 through the mufflers @ 3500#. Pretty good on the street for the early '70s. Could cruise around in traffic but when you stood on it, it would just go!!