Cozum
I have several Rochester 2G carbs & a couple sets of accelerator linkage for 1957 3100 factory v8. Off manual trans trucks. Let me know if could use pics or measurements of same.
To my limited knowledge, new trucks could be ordered with governors from factory---assumed by mainly commercial/industrial applications. Appears to have been a popular option as governors are discussed in shop manuals and FAM's.
delky dave in wyo


1957, 3100, v8
2016 gmc 4wd