Engine i.d.

[Mopar001]

how can I tell if my block is original or not? HELP...

sorry, cant find how to delete this post....

 

[Wollfen]

Usually on the passenger side you will find the casting date as to when the block was made, it usually precedes the cars manufacture date. That is, if your car was made in 68 the block will be from 67. Also from Late 1968 onwards the VIN number was stamped it the block, firstly on the ridge edge mounting next to the bellhousing. From 1969 the VIN number moved to the edge of the sump pan area on the side of the block. Also depending on whether the engine is a B or RB engine you will find the pad that has the Cu in displacement stamped in preceded by a letter denoting the year it was put in the car, i dont have the list handy but D is 1968, E 1969 and so on. The pad is found on B's beside the distributor and on RB's behind the water pump housing on top on the drivers side.

 

[bluefury361]

Usually on the passenger side you will find the casting date as to when the block was made, it usually precedes the cars manufacture date. That is, if your car was made in 68 the block will be from 67. Also from Late 1968 onwards the VIN number was stamped it the block, firstly on the ridge edge mounting next to the bellhousing. From 1969 the VIN number moved to the edge of the sump pan area on the side of the block. Also depending on whether the engine is a B or RB engine you will find the pad that has the Cu in displacement stamped in preceded by a letter denoting the year it was put in the car, i dont have the list handy but D is 1968, E 1969 and so on. The pad is found on B's beside the distributor and on RB's behind the water pump housing on top on the drivers side.

This is kinda right ...... The 68 number stamped into the bell housing flange is actually the SO number. 69 was the first year with the full, or partial VIN number stamped on a pad above the pan rail on the passenger side of the block.
Generally the block cast date will fall within 3 monthes prior to the vehicle build date and the machine date stamped into the engine ID will be within days prior to the vehicle build date.
The letter stamped before the CID stamping is the car series, or year of manufacture.