I.D. smallblock chevy number

[Squarebody51!]

Trying to identify my smallblock Chevrolet vin numbers. T0221HN Heads are 3947041.

 

[hurst01]

I don't have information handy on the Suffix but the heads I do.

3947041....69-70...302/350......"Right angle" casting identifier, 64cc chamber, accessory holes, good HP head.