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| | | Forums66 Topics128,035 Posts1,055,566 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!
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on the Internet for over 30 years! and not clogged down with Ads! Again, thanks! | | | | Joined: Oct 2011 Posts: 187 Wrench Fetcher | | Wrench Fetcher Joined: Oct 2011 Posts: 187 | Hi guys I have a 58 3600 235. I bought a new fuel pump cause th old one was a leaker. I have never put one of these on and I dont want to screw anything up. Got a little nervous when the instructions started talking about making sure the cam shaft was in the correct location. Any tips for me Thanks Rick
Rick 58 3600 4 on the floor
| | | | | Joined: Aug 2005 Posts: 6,377 Ex Hall Monitor | | Ex Hall Monitor Joined: Aug 2005 Posts: 6,377 | Pretty simple. The only issue I've discovered with the camshaft is it can be difficult to get the fuel pump mounting bolts started if the lobe is at it's high point relative to the pump lever that rides on it. If that's the case just turn the engine a bit so the cam turns. I've found that even with the lobe in the "wrong" position it's not really that difficult to get the bolts started. I get one started (not difficult) and draw it down enough to get the other started.
Last edited by Tiny; 02/03/2012 1:08 AM.
Save a life, adopt a senior shelter pet. The three main causes of blindness: Cataracts, Politics, Religion. Name your dog Naked so you can walk Naked in the park.
| | | | | Joined: Oct 2011 Posts: 187 Wrench Fetcher | | Wrench Fetcher Joined: Oct 2011 Posts: 187 | Hey Tiny, First of all I think I am going to change my Profile name to "I dont know anything about Stovebolts" Anyway I took my new fuel pump out to the truck and it is about 1/2 the size of the one on there now. The old one has a whole lower section with a tube coming out of it and heading up the side of the motor in through the firewall. My guess is this is a vacuum line for the old wiper motor. Does that make sense and if so I assume I can just install this new one without the vacuum as I dont have a vacuum wiper anymore Rick
Rick 58 3600 4 on the floor
| | | | | Joined: Oct 2006 Posts: 1,847 'Bolter | | 'Bolter Joined: Oct 2006 Posts: 1,847 | they come with instructions? | | | | | Joined: Jun 2008 Posts: 1,388 Shop Shark | | Shop Shark Joined: Jun 2008 Posts: 1,388 | Yeah, if you don't have the vacuum wipers anymore, it won't matter at all. I'm sure when you removed the wipers, you plugged the hole in the intake manifold right? | | | | | Joined: Oct 2011 Posts: 187 Wrench Fetcher | | Wrench Fetcher Joined: Oct 2011 Posts: 187 | Actually Mr Lang when I bought the truck there was no wiper motor at all. I installed an electric cause I couldnt find a vacuum style. I have noticed there are a couple of hoses with screws stuck in the end of them. I have been assuming these were vac hoses but was afraid to touch them cause I dont reallt know what they do. Thanks Rick
Rick 58 3600 4 on the floor
| | | | | Joined: Jul 2007 Posts: 461 Shop Shark | | Shop Shark Joined: Jul 2007 Posts: 461 | It sounds like you have a double-action fuel pump, which is also a vacuum pump. The original pump is single-action. You probably got the proper replacement single-action pump.
Harvester | | | | | Joined: Jun 2008 Posts: 1,388 Shop Shark | | Shop Shark Joined: Jun 2008 Posts: 1,388 | Ahh, well, the rubber hose will more than likely be from the 'ol vacuum wipers. There is a fitting on the intake manifold, where the rubber hose would connect. You can plug this with a 1/8" pipe plug, brass is nice, as it comes out easy if you ever want to instal a vacuum gauge, or connect some other vacuum accessories, such as an ash tray, or fan, or Southwind Heater, etc.
There will be (should be) a small steel vacuum line that runs from the carb, to the vacuum advance on the dizzy. | | | | | Joined: Oct 2011 Posts: 187 Wrench Fetcher | | Wrench Fetcher Joined: Oct 2011 Posts: 187 | Ok getting down to it this thursday. Please coeerect me if I am wrong but does the arm on the pump ride on an egg shaped cam OR is there another arm on the egg
Rick 58 3600 4 on the floor
| | | | | Joined: Mar 2002 Posts: 9,115 'Bolter | | 'Bolter Joined: Mar 2002 Posts: 9,115 | The arm on the pump rides directly on the camshaft lobe. | | | | | Joined: Oct 2011 Posts: 187 Wrench Fetcher | | Wrench Fetcher Joined: Oct 2011 Posts: 187 | Sorry to sound dunb but is the lobe the egg?
Rick 58 3600 4 on the floor
| | | | | Joined: Mar 2002 Posts: 9,115 'Bolter | | 'Bolter Joined: Mar 2002 Posts: 9,115 | The lobe that I am talking about is I think what you are calling an egg. | | | | | Joined: Oct 2006 Posts: 1,847 'Bolter | | 'Bolter Joined: Oct 2006 Posts: 1,847 | it is the only thing in that hole that you would most likely be able to see. It is actually round but off center. (at least on the two cams I have laying around.) | | | | | Joined: Oct 2011 Posts: 187 Wrench Fetcher | | Wrench Fetcher Joined: Oct 2011 Posts: 187 | Great guys, thanks that makes sence to me now. I got a little confused looking at and seeing other things on the web . But this now makes sence to me. I'll let you know how it goes. Thanjks againg Rick
Rick 58 3600 4 on the floor
| | | | | Joined: Oct 2011 Posts: 187 Wrench Fetcher | | Wrench Fetcher Joined: Oct 2011 Posts: 187 | One more question. Am I suppose to put any kind of glue on the gasket
Rick 58 3600 4 on the floor
| | | | | Joined: Jul 2005 Posts: 640 Shop Shark | | Shop Shark Joined: Jul 2005 Posts: 640 | No need for anything on the gasket, but if you need something sticky to hold the gasket in place while you align everything, it's okay. | | | | | Joined: Oct 2011 Posts: 187 Wrench Fetcher | | Wrench Fetcher Joined: Oct 2011 Posts: 187 | Well gang, I got it in. No problems but no thanks to the instructions. The diagram on the instructions would have you try to put in on upside down. And no I am not kidding. Thanks for your help
Rick 58 3600 4 on the floor
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