Looking at the suffix code FC = 235 HP 327 motor manufactured in 1969, came stock with a 2 barrel carburetor and a turbo hydramatic trans.

Mortec says that this casting number block is a 4 bolt.

What we need now is a casting date from the block, it should be raised letters on the rear of the block opposite the block casting number. It should consist of a letter a number one or two digits and a number. Another giveaway that this is a 60's block is that it will have the full distributor casting tower in the back of the block.

If you have camel hump heads on this motor they should be 186 castings and probably have the 1.94 intake and 1.5 exhaust valves in them. There should also be the 3 accesory bolt holes on the ends of each head.