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Mod | | | Forums66 Topics128,049 Posts1,055,740 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: May 2006 Posts: 237 Shop Shark | | Shop Shark Joined: May 2006 Posts: 237 | A 57 GMC coach is going up for auction. I know NOTHING about them. Any body know anything? What engine (is it a 702!!!)?
I've got a link to it in the spotting alert page. | | | | | Joined: Feb 2002 Posts: 12,029 Cruising in the Passing Lane | | Cruising in the Passing Lane Joined: Feb 2002 Posts: 12,029 | that'd be a PD4104 - no gas engines in GM coaches, originally be a 6-71 diesel, in need of updating, and awkward to work on , but a good candidate for running on waste veg oil ... if it had factory AC it'd have a 2nd 4something diesel to run that ... they had a manual 4 speed trans ... 35' long .... they made maybe 5000 of them over a number of years, very expensive upkeep, but if you can get it for cheeep, fun stuff ... better quality than the GM PD4501, Greyhound Scenicruiser Bill | | | | | Joined: Jul 2006 Posts: 707 Shop Shark | | Shop Shark Joined: Jul 2006 Posts: 707 | In need of updating? I think not. They're noisy and they sling oil, buy they run forever and are comparatively cheap to hot rod, and to overhaul. Perfectly capable of maintaining a 60 - 70mph cruise with acceptable fuel economy. What's to fix?
1951 3800 Be the change you want to see. -hotshoe
| | | | | Joined: Feb 2002 Posts: 12,029 Cruising in the Passing Lane | | Cruising in the Passing Lane Joined: Feb 2002 Posts: 12,029 | comparatively cheap? compared to real high end diesels maybe, but 4,5,6 thou to rebuild ain't cheap for me .... and the cruise speed depends on the vehicle it's in and it's rear gears and trans, it's not a high RPM machine
what's to fix aside from an engine that may have half a million miles or more of abuse, might be the air bag suspension, rusty frame from sitting in that tall grass for years, any number of age related leaks and wear on doors and hatches, etc etc etc .... jhaa asked about the bus generally, not just the engine
Bill | | |
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