re: 3/8 bolts. A grade 2 fine thread 3/8 bolt has a clamp load of 3600 lb. The two rocker studs are likely grade 5, which have a clamp load of 5500 lb. No issue lifting an engine and trans IMO. I've used them twice for that purpose.
Kevin 1951 Chevy 3100 work truck Follow this saga in Project Journal Photos 1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car) Busting rust since the mid-60's If you're smart enough to take it apart, you darn well better be smart enough to put it back together.