I was gifted a 79 k5 blazer 2wd that supposedly had a 400 small block swapped into it. I've been trying to identify the engine and have run into some difficulty due to conflicting information from the numbers. The partial Vin is 19R001031 (?) and the engine code is V0828FB, which are both located on the pad on the driver side, just behind the alternator. The block casting code is rather hard to see, but I'm convinced that it is 3932386. Based on the info I've been able to find, it seems like a 2bbl 327 from a 69 Camaro, but the partial Vin seems invalid and I am lost. Please help!