Cam degree
Printed From: Unofficial Allis
Category: Other Topics
Forum Name: Pulling Forum
Forum Description: Forum dedicated to Tractor and Garden Pulling
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=210781
Printed Date: 16 Sep 2026 at 1:12pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: Cam degree
Posted By: Stoges
Subject: Cam degree
Date Posted: 16 Apr 2026 at 2:34pm
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How do you degree a D17 cam? Does someone manufacture an adjustable cam gear, I know you can get one for a JD or elongated the bolt holes on one but the AC is keyed and pressed on. Information please.
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Replies:
Posted By: PaulB
Date Posted: 17 Apr 2026 at 5:10am
You could go a couple of ways. I mainly work on the smaller AC engines and I have made a jig to cut a new keyway in the gear. Others have had an ofset key made.
If I understand correctly, the larger engines at some time had a 3 bolt cam gear, if that is so, you could find one of those cams with the matching gear and slot the holes to get what you need.
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If it was fun to pull in LOW gear, I could have a John Deere.
Real pullers don't have speed limits.
If you can't make it GO... make it SHINY
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Posted By: im4racin
Date Posted: 17 Apr 2026 at 6:12am
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Cummings used an offset key on 855 and L10 engines.
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Posted By: DrAllis
Date Posted: 17 Apr 2026 at 7:16am
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WD's and early WD-45's had a 3-bolt cam gear attachment method. Later WD-45's had the press on gear identical to a D-17. D-17's had two different camshafts, with the difference being the oil pump driving gear tooth count to control oil pump speed/capacity. Offset key or cut wider keyway in the cam gear slot the way you want the timing to go. What "grind" are you using on your camshaft ??
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