Would like to build correct motor for my 1956 Nomad. Looks like it was built Oct 24 of 1955. It is a 4 barrel dual exhaust car with power glide transmission . Long block appears to have been replaced at some point. Any leads would be appreciated 
Thank you Steve!!The casting number for the 56 heads that you want is 3725306. The intake manifold is casting number 3737109, and the block casting number is 3720991. For the block to be correct, you will also need to provide the original transmission information.
Steve
Your engine suffix code that is stamped on the pad at the front of the engine just below the passenger side head should be "FB"Thank you Steve!!
It is a power glide😊
Thanks buddy😊Your engine suffix code that is stamped on the pad at the front of the engine just below the passenger side head should be "FB"
Steve