How big can you bore a 350?

Matt Kaiser · Aug 23, 2009

I have a farmall H that needs more hp. I also have a 350 that I am willing to go BIG with. Need to know how big and what pistons I can go with. It looks like I can use M pistons and modify the rods to work with no sleeves. Can I go that big or bigger? Any advice will be helpful.
Thanks

MSJ from MN · Aug 23, 2009

Might try posting this on the tractor pull board.

oliver power · Aug 23, 2009

Just talking to a customer who built a street rod with 350. Claims he went .080 over.

Lumpy · Aug 23, 2009

As O.P. says .080 has been achieved BUT!... you really need a 4 core radiator as heat becomes a major factor. A good cam, head set-up, and carb will make all the difference in the world. Stay away from edlebrock carbs, they are junk on just about any set-up. I've seen a properly jetted quadrajet out perform a edle hands down. And when/if, you put headers on, use the longest ones possible.... a long header = torque.

AndrewFromNS · Aug 23, 2009

I rather get the impression that we might be talking about two different 350's....the Original Posted likely meant the International 350, as this is a tractor forum, where as I get the feeling you guys might be leaning more towards a 350CID 'street' engine.

Am I right?

buickanddeere · Aug 23, 2009

Furnace braze in some 4" sleeves.

mEl · Aug 24, 2009

Matt, seems like B&D and I are the only ones that "get" what you are doing. Maybe posting on the pulling board is the better idea, Us guys over there do that stuff all the time. mEl

Lumpy · Aug 24, 2009

Oooopppsss! 350 tractor engine. Get the L.P. gas version. Seems to work better for pulling.

Lumpy · Aug 24, 2009

Oooopppsss! 350 tractor engine. Get the L.P. gas version. Seems to work better for pulling.

How big can you bore a 350?

Matt Kaiser

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MSJ from MN

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oliver power

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Lumpy

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AndrewFromNS

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buickanddeere

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mEl

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Lumpy

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Lumpy

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