Anyone here know anything about Ford Pickups and engines?

Us sure it is not a 351M , the look look like Clevland and if it is a 351C it is worth some coin.
Check the block # if is something like this-D7TEA3B then that would be a 1977 351M-basic Truck/large Car engine of those times.

If it is a CobraJet engine it will have one of these numbers on it
1971 2-Bolt (CJ) D2AE-CA D1ZZ-A
1971 4-Bolt (CJ) D2AE-CA D3ZZ-A
1972 2-Bolt (CJ) D2AE-CA D1ZZ-A
1972 4-Bolt (CJ) D2AE-CA D3ZZ-A
1973 2-Bolt (CJ) D2AE-CA D1ZZ-A
1974 4-Bolt (CJ) D2AE-CA D3ZZ-A
1974 2-Bolt (CJ) D2AE-CA D1ZZ-A
1974 4-Bolt (CJ) D2AE-CA D3ZZ-A