When we ran a full service chassis fab/turn-key hot rod shop a number of years ago, it was always useful to have threaded things around to weld into the frame for some kind of mount, etc.
Here’s a list of all our threaded things for your reference:
Motor Mount Top Plate - Chev
Product Details
Brand: Welder Series
MPN: C009
Country/Region of Manufacture: Canada
Thickness: 3/16"
Bolt Size: 7/16"
Laser cut slit allows forming by hand to mount the motor to the required height. For small/big block Chevs. 7” from the laser cut slit to the opposite edge.
Used in #C005 Chevy engine mount kit.
Universal Engine Mount Kit, Small or Big Block Chev, PR
C$75.00
Universal Engine Mount Kit, Small or Big Block Chev, PR
Supports the engine on the frame mount, not a thru-bolt.