Impala SS427.com Message Board
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Re: '69 SS427/4-speed
Posted by HMC on 4/25/2018, 11:45 am, in reply to "Re: '69 SS427/4-speed"
Nick , they transitioned from 270 block to the 512 block in October 68 , so it is possible to have a 512 block delivered in November . Of course that all depends on how many 270 blocks were in supply waiting to get used up .