best way to stroke 88 oliver

1100 massey head, also known as a 99 head I believe. They work well and can be worked with a lot. 4.5 inch bores can be done but you need a solid block to do that (hard block). I think in your case I would go with a more reasonable bore and keep it cool. You can also make the stock head work if you wanted to have it massaged by someone that knew what they were doing. My opinion, go with the largest valve without shrouding them. Off center grinding the crank gets you a few more usable cubes but then I would deck the block and run 0 (zero) deck clearence. Persoanlly I would push it and run less than thirty thousands between the head and piston if you are going to run stock rpms but that might not be the smartest thing for you. I would want 250 on the compression. On the cam a good grinder should be able to set you up but you have to know every other detail first. The cam (IMHO) is the last decision to make. Once you have the short block figured work on the induction. If you have to keep the same manifold have it cut then you can open the runners, How much? That depends on the cubic inches. Then it has to be welded back together. The stock carb is to small if you raise the cubic inches. If you have to stay with the stock carb I would for sure go with a high compression ratio. These are just my opinions. The bottom line is do what you want and learn from your mistakes. The other guys also make good points about hooking the tractor up. That should not be taken lightly.

Video your pull then compare it to other somewhat equal tractors and see what the differances are.

Please remember, that very few are running stock in farm stock!

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