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| | | Forums66 Topics128,059 Posts1,055,825 Members48,426 | | Most Online14,466
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!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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| | | | Joined: Mar 2004 Posts: 6,214 'Bolter | | 'Bolter Joined: Mar 2004 Posts: 6,214 | Matthew, The GMC 550 is rated at 26,000 GVW and 50,000 GVCW. All Task Force 550's had single head lights. To the best of my knowledge they had the 370 gas engines with either a 5-speed or Allison automatic trans. The 10 stud wheels were an option as was Air Brakes. My info doesn't show tandem axles as being an option, someone else will need to weigh in on that...are you sure it wasn't a Tag Axle? Hope this helps, Mike B  | | |
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