Not to pick on gbauer, so don't take it that way, but
I think gbauer's problem with hesitation was a lot of things that needed to be sorted out & not really a problem of using a non heated intake manifold.
His engine sounded totally lean @ first, carb jetting, accelerating pump sizing, mixture screws you name it, all seemed to be off.
I never had a problem with non heated intake manifolds, Offy or Cliffords, winter, summer no problem's what so ever.
Yes, it was a little cold blooded when first started, but that was not much of a concern, drove it everyday that way, & with no choke, just blipping the throttle.
I think gbauer, can go back to a non heated intake manifold after it gets all sorted out I bet there would not be any difference in driving, after it is partially wormed up, not even full running temperature.
Yes, if you have a heated intake manifold you will be able to take right off when completely cold, but like I said, once it's warmed up, never had a problem.
MBHD
