327 block date code help

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427TJ · #1 11-11-2007, 03:41 AM

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** · #2 11-11-2007, 04:10 AM

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 · #3 11-12-2007, 12:04 AM

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

427TJ · #4 11-12-2007, 12:18 AM

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.