These GMC motorhomes, made from the '73 to '78 model years, are notable for two things.
For one, they were made in-house at GMC, whereas most motorhomes and RVs are made by coachbuilders who buy bare chassis from a truck manufacturer and ad their own body.
The other is that they're front-wheel drive, using the basic driveline from the GM E-body Toronado. There's a longitudinal V-8 up front, either a 455 or 403 Olds Rocket, sitting atop a transmission driven by a roller chain off the crank, with half-shafts transmitting power to the front wheels.
It's so very cool and aero-looking. Those lines have aged well.
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