The VC11, it's a reman motor.
Basically its a replacement for years 78-85, vin code L,M,P. 2 bolt main. only cost at the time about 2000.00. Put out by PROFormance Powertrain, VC11 Chevy 350 Remanufactured. But actually hoping the heads are a little larger for more air flow.....
I tried...