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Yes it can handle a 12 row head. I ran one last fall. Once you get around 3500 bushels per hour it gets close to being maxed out. In reality, to keep it going non stop all day you need 2 grain carts.

Trying to unload a full hopper going up a slight hill would pull it down to about 3.5 mph. A 9770 would be nicer, but a 9670 will definitely do the job.

I got another 9670 for next year instead of a 9770.

Hope this helps.
 

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We have several out with this combination and have no issues , just make sure the 9670 is a 12 row ready machine and not a 8row machine. Also I assume that the 612c is non-chopping????I don't think that would be a wise choice.With that in mind it will work very well for you.
 

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deerefever it is a chopping corn head, do u think chiping it will be enough for horsepower to run it. if not is there any way to take out the fuel pump and get a little more power beyond a chip. I'm not worried about voiding a warrenty, so full steam ahead.
Thanks everyone
 

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430u, I don't believe even with a chip the 9670 wouldn't be a good choice for a 612c chopping, how ever a regular 612c will be fine on a 9670sts.As far as 9670sts with h-duty reverser, there is really no reason a 12 row would cause any drive line issues, when proper belt adjustment is done.
 

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I agree acleighton, back in 96 a couple of us switched over a 1243 cornhead to 16/22, rebuilt all the cases, new g.v.l plastic.We adjusted the variable belt using the alt. method, with no issues, what combine was it on do you ask????1990 9600 that was 12row ready. I had doubts at first ,but after 5 seasons running 4.5-5.5m.p.h in irrigated corn I believed !!.
 
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