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Recent content by Bert Thralls

Yesterday's Tractor Forums
  1. 1957 Ford 960 pulling tractor
    Expired

    For sale 1957 Ford 960 pulling tractor

    Comes with new water pump (in box) and a diesel crankshaft (to be stroked) Text or call 3176268576 for details Selling due to health. Quit pulling
    $2,400.00
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    BIG

    This message is a reply to an archived post by Josh Blackburn on July 20, 2011 at 07:55:41. The original subject was "Re: BIG". Hello Josh. You say to call you. What is the phone number? Where are you located?
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    JD G/70 Big Block

    I am running a 9 1/2" crank and a 6 5/8" bore. The 7 1/2" would give me 840 cubes. It would take more work to put it in than I want. It would be down for most of the next several months. I can be back together with my old block in a few weeks and ready for the "winter" pulls.
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    JD G/70 Big Block

    It should be the same as any G or early 70. A G block will bolt up to a 70 All Fuel. I am not aware that the Gas would have a different bolt pattern.
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    JD G/70 Big Block

    It is aftermarket. The pistons would not be a concern due to high compression. Personnally, I prefer not to go over 9:1. Between 8:1 & 9:1 a two cylinder will lug better on a hard pull. I ran 9 1/2:1 before and had to burn 114 octane and it did not seem to lug well. (That was with 6 5/8"...
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    JD G/70 Big Block

    Two-cylinder tractor pullers: Anyone interested in a 7 1/2" bore block for a John Deere G or 70 - contact me. I have a block with pistons, rings, wrist pins and a template. Located in central Indiana.
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    G crank questions

    Your answer is yes. What kind of stroke are you going to have on the crank? My experience with used cranks are worn splines. My advice would be to make sure the splines are good on the crank you are going to use.
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    John Deere G 7 1/2 block

    I would like to know if you have had any experience with installing a 7 1/2" bore block in a John Deere G. The block I am referring to is custom made by "Rick Thornburg" from the Georgia area. (I may not have his name spelled correct.) Any information or leads would be appreciated.
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