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| | | Joined: Jun 2011 Posts: 150 Shop Shark | | Shop Shark Joined: Jun 2011 Posts: 150 | Does anyone know where I can get diagrams on where the vacuum hoses go? I junked a 74 Camaro about 20 years ago and am finally getting around to installing the drive train and suspension in my 49 3100. The SB has the Quadrajet on an Edelbrock Performer intake manifold. There are vacuum hose connections on the front and rear of the the intake manifold as well as on the carb and the shop manuals just say mark them when you disassemble. There are about 6 lines so this could be complicated. Any ideas? I may have to see if I can find someone that has a similar set up locally. | | | | | Joined: Jun 2004 Posts: 8,597 Riding in the Passing Lane | | Riding in the Passing Lane Joined: Jun 2004 Posts: 8,597 | Its pretty simple if you are not going to use the original emmission controls. A 3/8 tube in front goes to the PCV valve. A 3/16 tube that has full vacuum at idle goes to the dist. Power brakes will hook to a pipe plug opening in the rear of the carb or on the intake in back of the carb. Auto trans. modulator hooks to a 1/4 in out let with full manifold vacuum. Cap off any other openings.
They say money can't buy happiness. It can buy old Chevy trucks though. Same thing. 1972 Chevy c10 Cheyenne SuperIn the Gallery Forum | | | | | Joined: Jun 2011 Posts: 150 Shop Shark | | Shop Shark Joined: Jun 2011 Posts: 150 | | | | | | Joined: Jan 2011 Posts: 35 'Bolter | | 'Bolter Joined: Jan 2011 Posts: 35 | I may have this wrong but I thought the vacuum connection to the distributor at idle should have no vacuum so that the advance doesn't kick in until you hit the gas. Is "full vacuum at idle" correct?
Thanks,
Steve | | | | | Joined: Jun 2005 Posts: 1,756 Shop Shark | | Shop Shark Joined: Jun 2005 Posts: 1,756 | Yess, you will loose all the vaccuum at full throttle | | |
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