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stroking a JD crank

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Out plowing

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I have stock crank in my 37 A at the moment, I was looking at stepping to to the 40-47 crank for the stroke. If I skip that and have my stock crank stroked at what point do I run into clearance issues?

also who could do such a job?
 
I'd start with the later crank 6.750 anyway. At 7.250 you have to grind a little on the stock rods. Around 7.750 to 8 inch with stock rods. You will have to grind on the rods and cam at that.Anything bigger you better look at custom rods or welded rods and notch out the back of the crank case.
I've heard good things about Josh.
 
I have a offset ground crank at 7.25 with a 2.5 journal rebabbitted rods . bought it from a buddy awhile ago when he needed some cash makes 344 cid . that would make a nice plowday tractor .
 
(quoted from post at 12:38:24 11/19/13) I have stock crank in my 37 A at the moment, I was looking at stepping to to the 40-47 crank for the stroke. If I skip that and have my stock crank stroked at what point do I run into clearance issues?

also who could do such a job?
Click to expand...

The other idea I was debating was to go with the 40-47 crank for the stroke, bore job with higher compression pistons. Go with either a Johnson or Murphy manifold, and swap out the can for something that would better work across all rpms. Seams that most deeres I've seen die off under a good lug. I'd rather run out of traction or track. But still retain the general usage around the farm.
 

The block is std bore at the moment, I have a set of .045 over JD Cast or unknown Aluminum. What type of modifications to the head are you meaning.
 
I have one like your talking about runs about 40 some horse . 3x14 in sod all day "it just don't give up" a buddy said . like josh said that would be a fun tractor .
 
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