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Minneapolis Moline Tractors Discussion Forum
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hot stock UB

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meanmoline

06-04-2006 14:45:44




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ive been pulling a ub in stock class for a couple years now im looking into a little more power now any sugestions would be appreaciated i just want a strong hot stocker thank you




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westtxmolineman

06-12-2006 12:15:22




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 Re: hot stock UB in reply to meanmoline, 06-04-2006 14:45:44  
g crank, and 670 heads will make a nice little stroker motor



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meanmoline

06-12-2006 20:37:03




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 Re: hot stock UB in reply to westtxmolineman, 06-12-2006 12:15:22  
stroker motor?
how is the torque off that set up?



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flamefighter

06-09-2006 18:07:41




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 Re: hot stock UB in reply to meanmoline, 06-04-2006 14:45:44  
I'm from irrigation country, the guy that had the dealership before us sold tons of irrigation engines so all the blocks we ever used were off a 336 or 504 irrigation engine. Yes you can run gas through them but 110 octane racing fuel would be the best. You can even use the same aluminum pistons out of the 336 irr. engines on your 283 rods, but you will have to have the head off bring each piston up to top dead center, measuere how much the piston sticks up past the block. Usually about .020 to .040 thousands. Chuck them up in the lathe and turn them down. Leave about an inch or so diameter in the center of the piston. So it goes into the valve area of the head. You now have a raised top piston. Have done it to several tractors and runs about 220 lbs compression. So high octane fuel is a must. Good luck.

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meanmoline

06-12-2006 20:41:43




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 Re: hot stock UB in reply to flamefighter, 06-09-2006 18:07:41  
is this now a longer stroke?
and if so how do they actuially pull
lots of torque?
or are they an rpm lover?
special cam needed?
how about actual power any dino specs?
sorry for all the questions but you have me quite interisted
thanks again



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Flamefighter

06-05-2006 17:05:18




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 Re: hot stock UB in reply to meanmoline, 06-04-2006 14:45:44  
Is your ub strictly stock now? 283 cubes? If so you could put 336 jugs on it. and 10a 4232 or 4233 heads on it. Grind the cam. Get a distributor off a 336 that has a screw on cap and put electronic igition in it. You could also spend some bucks and put a 403 crank in it and get special pistons from welters for 100 bucks a piece. We have put 336 jugs and the propane heads on three tractors for guys now. Heck of a difference. Just by putting the different heads on increased the compresson 100 lbs a cyl. Have fun.

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meanmoline

06-08-2006 18:02:27




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 Re: hot stock UB in reply to Flamefighter, 06-05-2006 17:05:18  
thanks for the input i was just wondering about thoes lp heads do you still run gasoline through them?
and 336 jugs are they from a g-1000 perhaps
oh and i am 100% stock yet the only thing i have done is put a few weight brackets on
thanks again



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