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Tractor Pulling Discussion Forum

Good Rocker Ratio for Farmall h

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pullerman

06-10-2007 15:02:09




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Could anybody tell me what rocker ratio to run. I have my motor camed, bored and alot of head work done. Im trying to figure out between 1.7 and 1.9 and what is the stock ratio. Im getting roller rockers for my h project and trying to figure wich ones. Any help would be great.




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Gary Baker

06-11-2007 06:19:43




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 Re: Good Rocker Ratio for Farmall h in reply to pullerman, 06-10-2007 15:02:09  
It realy depends on your set-up. But stock is 1.65. I normally go with 1.9 on the intake and 1.7 on the exhaust. Make sure you have enough spring travel so you dont coil bind the spring.



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Greg_Ky

06-10-2007 18:28:08




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 Re: Good Rocker Ratio for Farmall h in reply to pullerman, 06-10-2007 15:02:09  
What are the cam specs? How much clearance between the valves and piston? What RPM are you wanting to turn?



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