What a 1968 340 manual transmission cam idles like in a 1969 340



This is the same speed, roughly 750 rpm, but mufflers are closed.

It has stock exhaust manifolds and 2.5" pipes, both sides, running into a Dr. Gas X 2.5" junction and then into the mufflers. Tailpipes are stock, with the original small diameter inlet chrome tips.

The X smooths some of the rumpety rump of the cam but you can still hear it in both pipes.