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JSeery · 08-01-2015, 10:51 AM

Most rebuilds do not get sleeves unless there is a problem to correct. IF you did use sleeves and replace the sleeves as needed the block sees little to no impact during a rebuild. Ford 8N tractors work this way and the engines should, as you say, last forever.

Even without sleeving you can overbore a flathead many times. With each rebuild you are going to get a lot of miles out of it with reasonable care. Boring a flathead block is not going to lead to a block warping.

08-01-2015, 10:51 AM	#2
JSeery Member Emeritus Join Date: Nov 2012 Location: Wichita KS Posts: 16,132	Re: Flathead Longevity Most rebuilds do not get sleeves unless there is a problem to correct. IF you did use sleeves and replace the sleeves as needed the block sees little to no impact during a rebuild. Ford 8N tractors work this way and the engines should, as you say, last forever. Even without sleeving you can overbore a flathead many times. With each rebuild you are going to get a lot of miles out of it with reasonable care. Boring a flathead block is not going to lead to a block warping.