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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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| | | | Joined: Mar 2006 Posts: 319 Shop Shark | | Shop Shark Joined: Mar 2006 Posts: 319 | I believe the THB W 166 1 E sequence decodes as THB = 1971 1/2 ton 3.07:1 ratio (3.73 was standard, 3.07 optional) W = Warren, Mich (plant) 166 = June 15 (166th day of year) 1 = Dayshift E = Eaton positraction differential Found the THB reference here: http://www.americanclassic.com/paint.htm?p1=axlesUsed the site sequence example for 71 and later axles to decode the rest: http://novaresource.org/axle.htm
"Nothing astonishes men so much as common sense and plain dealing." - Ralph Waldo Emerson
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