I could not find a New Old Stock gauge. Unfortunately I could not find a reproduction gauge like the ones for 1947-55 Chevy trucks.

Used gauge.
https://www.ebay.com/itm/114673227986

This is a rebuilt GMC gauge from Jim Carter who is well know at Stovebolt. Your broken gauge may require an additional $60 core charge. Call them for details.
https://oldchevytrucks.com/resp275.html

Last edited by buoymaker; 07/22/2021 9:38 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."