Originally Posted by BogiesAnnex1
Too bad, there are several versions of these things that are similar but not exactly identical in dimensions so he will eventually learn that there is no precise dimensional recepie that fits every build. Space is critical how it gets built dimensionally as mods proceed will drive the fine modifications needed for installation, you just can't get beyond generalizations because of that. The info he was given is more than adaquate to get started, probably the one thing missing is that there is great aid in using plastic mock ups of the Chevy engine and transmission since they are light and dimensionally correct that a person can maneuver them about to get the needed dimensions, but it's a substantial added cost to the build.
That is why I make mine out of cardboard or plywood whatever is laying around the shop. If you have the engine on the floor you can simply trace the rear profile, make another for the front, then measure the blocks length and use the threaded rod/nuts to make your mock up block bolting it right to the bell housing.
The pictures on the Chevy link I linked earlier are quite accurate. Just scale it to real world scale using a free graphic program like gimp and print it off and tape the thing to your cardboard.
Sounds cheap cause it is. Cost of threaded rod/nuts and maybe another $10 in paper and cardboard.
Cheap, light, and when your done does not take up any shop space. It works good enough to say hold a oil pan or header up to the mock up block and get a very good idea the real clearance you have.