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Gene F · 06-13-2021, 02:46 PM

Most likely dragging brake. If the points are too close it hurts performance a lot. The block that rides on the cam sometimes wears down quite a bit.

The GAV open 1/8 to 1/4 should be fine. Check to assure that the bolts holding the carb on the intake are "snug", not tight, "snug".

06-13-2021, 02:46 PM	#48
Gene F Senior Member Join Date: Mar 2012 Location: Ohio Posts: 1,993	Re: Longest trip yet...MPG suck! Most likely dragging brake. If the points are too close it hurts performance a lot. The block that rides on the cam sometimes wears down quite a bit. The GAV open 1/8 to 1/4 should be fine. Check to assure that the bolts holding the carb on the intake are "snug", not tight, "snug".