327 block date code help

[427TJ]

Need help with numbers decode. Can't get at casting number with tall Moroso valve cover in place. Engine is in my '55.

Here's the block pad stamp:



Looks like casting date? Located ahead and above oil filter base.

[kwhizz]

Here you Go!!......

EC 1965 327 Special high perf. - 300 4 Chevelle
EC 1966 327 A.I.R., glide - 275 4 Chevelle/1200


Ken

[JohnZ]

The casting date is on the passenger side rear flange of the block, about six inches outboard of the distributor.

[427TJ]

Thanks! I'll try to get at the casting numbers. Removing the valve covers should do it. I need to check the valve lash anyway.