Originally Posted by Denny Graham
And now you gonna tell us how you know the original 3693710 muffler was centered Tim??? Are you hidin' a stash of them
NOS jobbers in the back room???
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So the only way to tell is as Paul has posted, a NOS, in the box muffler.

dg
I don't know.

To me, straight through, means straight though (as in 1954, by then the part number and tube diameter had changed)? headscratch
http://chevy.oldcarmanualproject.com/shop/1954truck/54ctsm0802.html

As apposed/opposed to a 1941 reverse-flow muffler?
http://chevy.oldcarmanualproject.com/shop/1941/41csm223.htm

The reverse-flow muffler was still used through at least 1949 - then a 1950 "straight-through" construction muffler was used?
http://chevy.oldcarmanualproject.com/shop/1948_51truck/51ctsm0802.htm

There's no need to be snotty (that should be exercised in the Greasy Spoon, if anywhere)?

Let's look for NOS and documentation.