Okay I finally found a picture.
My GUESS is that they (1940 to 1948 216), except the end studs, are the same size.
Attachments
Manifold Bolts 04.jpg (71.67 KB, 45 downloads)

Last edited by buoymaker; 05/25/2022 4:41 PM.

"Adding CFM to a truck will only help at engine speeds you don't want to use."
"I found there was nothing to gain beyond 400 CFM."