Carbking, referring to the admonition about "Running with no heat on a street engine ... is asking for icing issues," has me wondering. What is a guy to do? My Roch B on my stock '66 250 I6/Powerglide 2spd sits "far away" from the exhaust manifold, as you know. I always thought that this is a good thing because I read that Rochester put in those "slots/grooves" on some of their throttle bodies in an attempt to cool their carb in summer city traffic. Most of what I know about carburetors comes from guys like you and your website articles. But I find myself somewhat confused at this point. Though it sounds ridiculous, can it be that for those of us running Roch B's we need a carb configuration for summer and a carb configuration for winter? I am not referring to the routine need to adjust the idle for winter. I am thinking about whether I should somehow shield my carb from the manifold in summer and then take off the shield in winter. Or, (now please do not laugh) should the stock exhaust manifold have two carb sites: one for summer and one for winter? Before I get run out of town for that idea, please note that my research has not brought forth a better idea. Alternatively (and at the risk of sounding like an idiot) I wonder whether a small electric fan for the Roch B would be beneficial for summer city driving, the same fan being repositioned in winter so as to direct heat from the exhaust manifold to the carb. To my lay mind, it seems that Rochester agreed that their B was not doing well in summer city traffic congestion (hence the throttle body slots), while at the same time, empirical evidence from the consumer suggests agreement that the carb needs heating at most all other times. -Alden
