How big of bore can you put in a 8.1 liter Deere? January 02, 2023 12:56AM
Can the 8.1 block be bored for 5” pistons? It seems 5” bore and stock stroke would be 600 ci.

Re: How big of bore can you put in a 8.1 liter Deere? January 03, 2023 03:31PM
8.1 has same bore spacing as the 404/466/7.6 so bore limits would be the same. Generally 4-7/8, but may be able to go more in some lower power applications. Not sure why you wouldn’t want more than stock stroke if you are going for 600 or more.

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