350 block with 060 over bore - The 1947 - Present Chevrolet & GMC Truck Message Board Network

rfmaster · 08-15-2011, 06:05 PM

As the title says I have a pair of 350 blocks that came into my garage already bored 060 over. Every Chevy book says that a service limit on Gen 1 350 is 60 mills max overbore. Even at 60 mills over the cylinder wall thickness can be dicey depending on a casting. Before I load these spent blocks and take them to recycling yard I wonder if anyone have tried to re-hone and re-ring a 60 over block. I know it is not worth the effort, but I am just curious what one can get away with a bind.

//RF

08-15-2011, 06:05 PM	#1
rfmaster Registered User Join Date: Oct 2003 Location: OC CA Posts: 1,374	350 block with 060 over bore As the title says I have a pair of 350 blocks that came into my garage already bored 060 over. Every Chevy book says that a service limit on Gen 1 350 is 60 mills max overbore. Even at 60 mills over the cylinder wall thickness can be dicey depending on a casting. Before I load these spent blocks and take them to recycling yard I wonder if anyone have tried to re-hone and re-ring a 60 over block. I know it is not worth the effort, but I am just curious what one can get away with a bind. //RF __________________ "The Beast" 1975 Chevrolet C20 longbed 350/700R4! with 3inch body lift Dual Flowmasters Super 40's! TBI retrofit completed (2007-07-29) New 383CID (+030) 08-304-8 9.5:1CR x36,005 (2012-12-17)



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