LT1GMC

My 92 GM service manual states replacement booster will be pre-adjusted and do not change. Does not have a clearance spec for the booster rod to master distance. Replacement AC Delco booster states check and set clearance to manual's spec. Whatever that may be. They have a go/no go gauge for ZR1 boosters which is a different booster/cyl but no mention of the LT1 other than preadjusted (back then on factory replacements). I have been down this path before, when I changed the existing one in 2006 it was fine until everything got warmed up they it started locking the brakes, barely got the car home. Anyone have a spec for the clearance, much rather not have to try with a guess.
Thanks for any reply,
Steve