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| | | Forums66 Topics128,049 Posts1,055,649 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: Dec 2010 Posts: 62 'Bolter | | 'Bolter Joined: Dec 2010 Posts: 62 | '56 GMC F350. I really don't know much about 2 speed rears. There's a switch in the dash with pipes coming off the back. 2 go straight thru the firewall and to the axle but the 3rd, which is smaller in diameter, heads under the dash and has a cap on it. Should that one be connected to a vacuum somewhere? maybe manifold? | | |
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