How to ID a real MP 360 crate magnum, id the HP rating, and what's it worth?

67Dart273 said

Thanks, what are the options there? I mean between the 300hp version and the upper ones? Looks like an M1?

View attachment 1716044616

Click to expand...

That’s a 300/320 horsepower motor. It’s got a dual plane intake, hydraulic roller cam, stamped steel rockers, 9:1 compression. Should run off 87 octane pump gas

The 380/390 and up horsepower magnums had single plane intakes.

Edit: looking at my 2002 and 2007 MP catalogs there was a bump in HP on these 300/320 magnum engines due to the "New Magnum R/T big valve heads" (2.02" intake)