ford in a 4.1 640 July 31, 2011 01:39PM
thinking of building a 640 4.1ford and was wondering if it would hold together, and how well it would run at around 600cui and what kind of gears to run or run a profab tranny thanks for any help
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Re: ford in a 4.1 640 August 01, 2011 02:08PM
Is cubic inch really king?
It helps but I wont give it all the credit everyone else does.
I wreaked my big cube motor last year 636 Ford SuperFarm engine+

Wanted to go pulling so bad I put a Stock 474 back in with a cam, cut stock pistons and a head that any one would say would not make farm tractor any better.
Put on my NTPA 3x3 pump and injectors guessed at where to set it and it runs pretty good.
Got within 10 feet of an intercooled slotted Badger tractor and 8 feet behind Blue Bye U 2

We shall see how it stacks up this week 3 hooks in a row and more tractors to compare to.

go ahead whine all you want about how i dont have the torque I dont care it makes power
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