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Tractor Pulling Discussion Forum

G head torque

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Jack Hollon

03-09-2004 15:57:57




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Have planed the head 200 thousandths. Tractor has 637 cubic inches. My question is: How much can I torque the stock head bolts? Thanks in advance, Jack




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johndeere-john

03-10-2004 07:21:51




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 Re: G head torque in reply to Jack Hollon, 03-09-2004 15:57:57  
Bump the torq to 250 lbs. now if you have put the unstyled head on you can use the head bolts off of a 720/730 and go to 275 lbs. the 208 number was for the stock 4.5 to 1 comp. Jon



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luckydog

03-09-2004 18:07:50




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 Re: G head torque in reply to Jack Hollon, 03-09-2004 15:57:57  
Jack- I&TBook for modelG says 208ft-lbs. All on heat treated studs. For your appl. do what you think is best!! luckydog



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