i need help with finding out what i've got casting numbers are 3932388 mortec says 69 350 or 327 how can i find out which with out taking it a part numbers on the right frt.ledge are 19u152914t1226hn thanks greg

I'm not a fan of the mortec site

3932388 is a 1969 350 block

19u152914 is the VIN derivative of the car this engine came out of

1= Chevrolet
9= 1969 (in this case)
U= Lordstown, Ohio assembly plant (they made Full size Chevrolets)
152914= last 6 digits of the car's VIN


T1226HN
T= Tonawanda engine plant
1226= Dec 26th build
HN= Full size Chevrolet 350/300hp with turbo 350 trans