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Mod | | | Forums66 Topics128,159 Posts1,056,901 Members48,458 | | 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: Dec 2009 Posts: 52 Shop Shark | | Shop Shark Joined: Dec 2009 Posts: 52 | There is a 60s model GMC 7000 at a junkyard with the gas V-12, wonder what trans was behind it. I didn't think to look when I was there. Does anyone know what all was available? | | | | | Joined: May 2005 Posts: 8,878 . | | . Joined: May 2005 Posts: 8,878 | Big 8000 series Spicer 5 speed is what I remember from the one I had, same as the few a friend of mine has. Thought I had a picture of the tag in the glove box, but can't find it right now... Here's one of the transmission. http://rides.webshots.com/photo/2071861450080251109GtWGtII assume there were other options, but seems like the Spicer was common. Grigg | | | | | Joined: Jan 2008 Posts: 4,962 'Bolter | | 'Bolter Joined: Jan 2008 Posts: 4,962 | A 7000 series with a V12 would have come with a Clark 400 Series 5 speed transmission. It was a synchronized transmission with positive lubrication to the main shaft to keep it lubricated during long periods of time in a straight through gear. Spicer 5 speeds would not hold up to the high rpm and torque of the V12. You must keep in mind they went up to 275 HP @ 2400 RPM It could have had a Spicer auxiliary behind it or a 2 speed Eaton axle. | | | | | Joined: Dec 2009 Posts: 52 Shop Shark | | Shop Shark Joined: Dec 2009 Posts: 52 | Grigg, after reading your V-12 saga I think I will pass on the V-12 dream. If anyone else would like to pursue the engine or truck pm me and I will reveal its location. | | | | | Joined: Apr 2003 Posts: 67 Shop Shark | | Shop Shark Joined: Apr 2003 Posts: 67 | peytonmaterne - would sure love to see pics of the truck it was in as well as the engine and tranny, if you're ever back that way !
Royzell
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