I have plumbed water heat to the bottom of the Offy single 4 barrel intake on my 292. The engine has a 500 cfm carb and tube headers. Heats up fairly quickly from the combination of the water heat and the close-by tube headers. Smooth acceleration for such a relatively large carb; No flat spots, no hesitation and no backfire.

I came across a water heated single 4 barrel Clifford for a good price on Ebay a few months ago. I want to see if there is a noticeable performance difference between the two both in terms of heat and horsepower.

-magic mike-