Sorry,I'm not too knowledgeable on the engine. It is in an 84 gmc fullsize and it has a box under the dash with only one wire going to the hei dist. It did have more wires, but all of the emissions were removed and they were cut. Not sure what else to share. Its just a cast iron block with 1.94 heads. Flat tappet cam, alum. Pistons, 4 bolt main, edelbrock perf carb n intake. If you need to know more ill dig out the paperwork on the engine. Thanks for the help so far. I'm going to buy a hold down and bolt for it today and see what happens.