found my block casting numbers

[71-440]

While I was under the car today I found the block casting numbers.
It's a 1977 block.

Interesting info on blocks from 440 source.

http://www.440source.com/blockinfo.htm

[RUNCHARGER]

Nothing wrong with a later block, they will make the same power as an earlier one. For myself, the date code doesn't matter.

[Chryco Psycho]

The dash 1 is cool one of the first blocks made from that mold generally they ae better for core shift etc

[1 Wild R/T]

The dash 1 is cool one of the first blocks made from that mold generally they ae better for core shift etc

I know I'm going bling but that sure looks like a 4 to me..... Which still isn't bad....

[RUNCHARGER]

Yes: I see a 4 as well.

[71-440]

4006630-440-4

There's what looks like a date above that on passenger side. I think it is a 2 16 77

[Chryco Psycho]

You are correct , my computer hard drive failed last week , so I am working from a really crappy laptop , not sure why but cannot sem to get the computer running again even with a new drive installed & loaded with windows etc , frustrating