Re: [AMC-List] Heat Crossover

["Glenn Ford" <gcmford@xxxxxxxxxxxxxxxxxxx>]

You used the key words "street machine".

I have no experience with any hi-perf AMC's, but I did once run a chev 283 
w/30-30 cam +solids, .040 over and 10 to 1 comp. I blocked the crossover 
with a Mr. Gasket intake set, and with a Holley four, I found it very 
disconcerting to find , in cool, humid weather, that the throttle would 
freeze up at part throttle while just cruising. I had heard of carburetor 
icing, but just in airplanes. Gets exciting when the car won't slow down 
with foot off gas.

I suspect you may find some of those manifolds may not have a crossover 
passage, anyway, and the heat from below through the aluminum plenum may be 
adequate. More experienced will chime in, I hope.

Just that if you get the NON-crossover type heads, you are stuck in that 
rut.

I will say that my chev ran great during the summer, never needed premium, 
only regular gas.

Glenn Ford 

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