14.7 :1 is supposed to be the sweet spot. See what it is when the engine is fully warmed up to 180 - 190 degrees. 160 degrees is too cold.


1957 Chevrolet 5700 LCF 283 SM420 2 speed rear, 1955 IH 300U T/A, 1978 Corvette 350 auto, 1978 Yamaha DT175, 1999 Harley Davidson Softail Fat Boy