cobravii Posted December 29, 2016 Share Posted December 29, 2016 Like the title reads I am looking for 1964-1966 Buick 425 blocks. All I really want is short blocks but am interested in all. I will pay all shipping costs. you can reach me here or at cobravii@shaw.ca Link to comment Share on other sites More sharing options...
g-g-g0 Posted December 30, 2016 Share Posted December 30, 2016 Try Dan in Detroit Area. 313 516 1289. Lots of first gen Riviera parts. Link to comment Share on other sites More sharing options...
cobravii Posted December 30, 2016 Author Share Posted December 30, 2016 1 hour ago, g-g-g0 said: Try Dan in Detroit Area. 313 516 1289. Lots of first gen Riviera parts. Thanks, I'll give him a call. Link to comment Share on other sites More sharing options...
billbuickgs Posted December 30, 2016 Share Posted December 30, 2016 I thought all 64 to 66 401 and 425 blocks are the same except for the bore and the code stamping ???????????? Bill Link to comment Share on other sites More sharing options...
cobravii Posted December 30, 2016 Author Share Posted December 30, 2016 externally 401 and 425 blocks are the same however a 401 cannot be bored to a 425. Some have said that an uncles's brothers aunt once bored a 401 to a 425 but I don't believe them. so, that been said, a 425 block is cast differently. Link to comment Share on other sites More sharing options...
billbuickgs Posted December 30, 2016 Share Posted December 30, 2016 8 minutes ago, cobravii said: externally 401 and 425 blocks are the same however a 401 cannot be bored to a 425. Some have said that an uncles's brothers aunt once bored a 401 to a 425 but I don't believe them. so, that been said, a 425 block is cast differently. Thanks for the info ! I'm sure there are other Buick guys surprised to hear this !! Bill Link to comment Share on other sites More sharing options...
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