Unstyled John Deere Heisler Head

For a john deere unstyled A, when using a heisler head do you have to use a heisler manifold also or will the stock manifold bolt onto it?
 
From info on Duane Larson's site it doesn't appear Heisler made two diff. manifolds , one for their head and one for over the counter sales for stock tractors so I would have to say they all have same bolt pattern no matter which head.
 

Thank you sir. Im looking at buying one and someone had told me that you needed a heisler manifold to match the stud pattern on the head, but i had no idea.

One other thing, can you use the new reproduction M&W style alum high compression pistons that everyone sells in the rebore kits with this head? Im just wondering if theres enough room with the taller pistons and ears protruding from the heisler head? Thanks for the help!
 
You may want to post on the tractor puller forum for that question. I honestly couldn't say. Also to expand on the manifold question , I've seen a few Heisler and Johnson manifolds and one or the other or both have slotted holes for the studs which is more than likely to fit different years and/or theirs vs stock heads.
 
Just an update. Just got off their site. Heisler manifold for "A" with JD # A587 R head is pt. # HA-362. Manifold for "A" with A 22325 R JD head is pt. # HA-2383 L . Ironically the part numbers are all the same accept Heisler put an "H" ahead of the JD pt. # on heads and added a "1" to the left of the JD pt. # for manifolds. So according to the book, you need a Heisler manifold with pt. # HA- 362 if your tractor had head # A 587 R and manifold # HA 2383L if your tractor has the A 2325R head. I'm still not convinced that it isn't a port shape/size difference as apposed to bolt pattern tho. It also says NO Hi Comp Pistons with Heisler Hi Comp heads. Clear as mud eh?
 

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