A.If we understand correctly, you want to make engine mounts from tubing with plates to attach to the engine at one end, and some sort of bushing that hooks to the frame on the other.
Not being familiar with that particular engine, we're going to have to make some general statements. Such as the thickness of the plate attached to the engine would depend on the distance between the mounting holes. If the holes are close, like a small-block Chevy, 1/4-inch is more than adequate; if the mounting holes are further apart, like a small-block Ford, 3/8-inch material may be necessary.
On the frame end of the mounts, many builders have used urethane bushings, like those found on four-bar ends, to provide some isolation. Usually the bushings are sandwiched between two tabs attached to the frame.
The critical issue with what you are proposing is the diameter and number of pieces of tubing used for the mounts. If single tubes are used on each side, they should be as big in diameter as possible. If you can build some triangulation into the design with two or more tubes from the engine plate that meet at the frame mount, that would help strength. Consider building a mount that looks like a capital A lying on its side (the bottom legs would attach to the engine plates, the closed end would have the bushing and mount to the frame)
As far as solid mounts go, we wouldn't advise them unless you really enjoy sitting in a vibrating chair.
Q.I was thinking about a future project. I would like to use the chassis and complete driveline from a 1999 GMC fullsize van and build my 1936 to fit the chassis. Is this asking for a ton of trouble or is it feasible with a lot of luck and hard work? The 1999 is 4 inches wider at the widest point of the frame. Can you please guide me one way or the other?Thanks in advance,T. HorcherPalatine, Illinois
A.There is a basic truth in street rodding: "Sometimes free parts aren't worth the price you're going to have to pay for them later on." This is a perfect example.
Using the engine and trans is feasible; forget the rest, especially the chassis.