Replacement 68 340 four speed cams

What A56 posted earlier in the thread is SPOT ON!!!!

A56 said
Found this and it relates to the Service manual. This also shows the '68 340 automatic cam. Yep, I'm still looking.
*68 340 only
Automatic-equipped Barracudas employ a hydraulic cam with 268/276-degrees advertised duration and .429/.444-inch lift. With the four-speed, there's 276/284-degrees duration and .444/.453-inch lift. Both cams use shaft-mounted 1.50:1 rocker arms and connect to the crank via a double-roller timing chain.
Click to expand...

There is PLENTY of incorrect info in the "Mopar" manuals over the years. Just because someone wrote it doesn't make it correct.

@Brooks James

The service manual for one.

I guess my own experience with these engines and building them over 45 years, nah I didn't write a book. Just know with my own eyes, tools and measuring devices what is right in this case.