Never had the wisdom to think of 1/4-28 holes to lift a big block Chrysler, intake bolts for me.
Along with a leveler, a must for installs and handy for removal of engine and trans mated because you can tilt the engine to clear the core support while dropping the trans down to clear the firewall.
Amazon product
In case I wasn't clear, I consider it patently nuts and dangerous to pickup an engine plus transmission by the carb stud bolts/holes, studs which often will shear on removal attempt, Chrysler wisely using a stud/nut arrangement rather than bolts, or two of each.
My experience;
Auto Technology degree from back in the day when they taught carburator alternator and starter rebuilding.
Heavy Equipment Repair degree immeditely following Automotive degree, hydraulics and welding classes.
ASE Certifed Master Tech, at one time.
State Certified Emissions Specialist, at one time.
Umpteen years in the field, bustin semi tires, fixing CATs in the woods.
3 knee scopes.
Still have both eyes and all my fingers.