Engine code
 

On the front passenger side of the block I have the ID V0414TBD. I searched on line to find the prefix V but no luck. I believe the 0414 represents April 14th. TBD in prefix is either 71,72 or 79 year. Is this a 350? Without pulling pan, How would I know if this is a 4 bolt main or 2?

Re: Engine code
 

V = Plant location.

TBD is the engine suffix code which you can look up.

TBD
1970 350 convfwd cab, m/t - 4 C-10, 20, 30
TBD
1971 350 conv. & fwd cabs - 255 4 K-10 to 2500
TBD
1979 350 conv. cab,m/t, fed L LS9 165 4 K-10 to 2500