Dear Friends,
This morning I came across some info that was
previously requested on the list. Somebody wanted to
know how to externally tell an AMC 304 from a 360. I
don't remember seeing an answer yet.
On the right bank valve cover, there should be a metal
tag on one end with a 6 digit code. Sorry, it didn't
specify the forward or aft end. If the fourth digit
is an H, then it is a 304. If the fourth digit is N,
then it is a 360. A caveat, however, because it is
possible the valve covers are not original.
A second, more positive method was mentioned. On both
sides of the block, 304 or 360 should be cast between
the first and second freeze plugs.
This data came from 1968 and 1971 Gladiator Truck
manual supplements for the engines. Hopefully this
info would apply to all AMC engines, not just truck
models.
If you are interested in them, they are available at
Vintage Books here in town. They will gladly take
phone orders and ship to you.
Hope this helps,
Vern
48 CJ2A in Vancouver, WA
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