Lifting engine for installation

604 said
Yes you are right but remember those test loads are with a nut on the bolt. Not threaded into aluminum or questionable hardness. A 5/16 bolt is only as strong as the metal it is threaded to. Not to mention unless you are using mill spec, MS or NAS hardware you really have no idea how strong that "grade 8" made in India or china TSC bolt really is. Just more of a chance than I am willing to take with my investment.

I don't doubt an aluminum intakes threads are softer than a bolt but I've used a carb plate numerous times lifting big blocks with iron heads and an aluminum intake. Just gotta make sure and use a stud that makes use of most (or all) of the threads in the intake and tighten them down.

oldkimmer said
...........I have pulled bb with alum intakes with tranny attached at leats 100 times with a carb plate............not 1 problem....................kim.........

More proof that it's not a problem using a carb plate on a aluminum intake.