Posted by JD Seller on February 28, 2013 at 17:03:10 from (208.126.196.144):
In Reply to: 7520 head posted by 4020 on February 28, 2013 at 10:20:34:
Not to be a smart butt but it may or may not. LOL I know that helps a lot.
Some of the 619 cylinder heads will interchange with the 531 head. The difference is in the age of the block and the age of the 619 head. The early JD 5010 block will not seal around the sleeve with the 619 head. The later JD 5020 and 7520 will seal around the cylinder head with the 619 head out of a 30 series age of engine. The newer 619 engines have a different relief around the valves and will not mate the earlier blocks.
This is from memory as I have not done this switch in over thirty years. We where doing it on some of the self propelled forage harvesters. I do remember we did it but had to have a certain cylinder heads for it to work.
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