Thanks for all the info, I appreciate it
The bolts that were previously used to mount the carb are 5/16-18 and the threads are 3/4" long
The thickness of the carb flange is 1/2" and the depth of the threads in to the manifold are 7/8"
SO, 1-3/8" total but thats max also with bottoming out the studs into the manfold
With carb mounting studs, are washers always used ontop of the carb flange?