Black Soot on plugs and end of tailpipe

[3dinterceptor]

I have noticed i been getting alot of black soot on the plugs and out of the exhaust onto the car bottom. Car runs real good...Stock class 355 chevy motor, 4 valve relief flattop, 450 /450 cam, Stock Willys 4412 "lil 500" with wooden slider adaptor on top of '69 cast iron Quadrajet intake...last time i changed plugs i went to a hotter plug with the idea it would burn more fuel in the combustion chamber with the hotter spark plug and not soot up.

[dereksehi]

If you have black soot on your plugs and in your exhaust you are too rich take some jet out or maybe your float is to high.