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Speed Patrol SN

Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Construction and other equipment
Forum Description: everything else with orange (or yellow) paint
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=210474
Printed Date: 21 Mar 2026 at 9:29pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: Speed Patrol SN

Posted By: GroneD21
Subject: Speed Patrol SN
Date Posted: 21 Mar 2026 at 5:17pm

I am trying to figure out what the SN for my Speed Patrol. It is not legible on the rear differential. Is there another place the Speed Patrols had that number? Can I cross reference the engine SN to roughly what year this Speed Patrol is?

Thanks

Replies:

Posted By: Bverwolf
Date Posted: 21 Mar 2026 at 7:08pm

I believe there should be a brass tag on the front right side of the front end. At least that’s where mine is.