Hey guys. I just got a 350 with the casting of 3970010 and a date code of E79. My question is, What does the 010, 020 numbers mean that are on the BACK of the block. I know that they mean the % of nickle if they are behind the timing cover. If anyone knows..please let me know. thanks. P.S. Anyone had any dealings with http://www.northernautoparts.com and what do you think....they got 350 kits for $150.
[updated:LAST EDITED ON Oct-24-02 AT 09:59 PM (CST)]Casting # CI Year Main Model 3970010....302.....69....4...................Z-28 Camaro 3970010....327.....69....2...................Trucks and industrial 3970010....350...69-80...2 or 4 Dvalentine
