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Tool Talk Discussion Forum

OT: Chevy V8 Fuel pump

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Slowpoke

02-23-2021 15:34:36




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I am replacing the mechanical fuel pump on my 1976 Chevy van G20 350 V8. It's almost impossible to get a finger in to move the push rod up and really impossible to have it stay up. I notice there are 2 bolts holding what looks like a plate that may stop the push rod from coming out. There are two identical gaskets in the box with the new pump. It does not look like one will fit under the plate as the plate is longer than the pump mounting casting. Should I remove the plate, let the rod out and put heavy grease on the top end and replace it? Is the additional gasket for the plate or do I need a different one between the plate and pump mount casting?
Any help appreciated.
Thanks,
Slowpoke.

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Hobo,NC

02-25-2021 16:11:24




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 Re: OT: Chevy V8 Fuel pump in reply to Slowpoke, 02-23-2021 15:34:36  
Try my trick it won't cost ya nuttin... BTW a Carter pump is ALL I would install... Try it with the old one first as a test...



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teddy52food

02-24-2021 07:06:17




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 Re: OT: Chevy V8 Fuel pump in reply to Slowpoke, 02-23-2021 15:34:36  
I changed one outside in the cold & the rod stayed up out of the way cause the oil on it was that stiff!



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rustyfarmall

02-24-2021 05:01:22




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 Re: OT: Chevy V8 Fuel pump in reply to Slowpoke, 02-23-2021 15:34:36  
Quoting Removed, click Modern View to see

I always just covered that push rod with thick grease. Never had one offer to slide back out. If you do the bolt trick, there is a chance you will forget to remove it. Not good.



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wore out

02-23-2021 21:34:49




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 Re: OT: Chevy V8 Fuel pump in reply to Slowpoke, 02-23-2021 15:34:36  
"They would not have two unless there was a reason for the extra one."

There is NO reason or use for the second/identical gasket 'cept "The Land of Almost Right" NOT getting it right (again).



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wore out

02-23-2021 21:31:55




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 Re: OT: Chevy V8 Fuel pump in reply to Slowpoke, 02-23-2021 15:34:36  
Quoting Removed, click Modern View to see

Yep, you got it, that's the bolt you are looking for!



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Steve@Advance

02-23-2021 18:34:23




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 Re: OT: Chevy V8 Fuel pump in reply to Slowpoke, 02-23-2021 15:34:36  
Vans are notoriously hard to work on, I feel for you!

If you can't get under the rod to push it up, you can take the 2 bottom bolts out and push the rod up.

With the cover off you can hold the rod up and turn the engine through to get the rod in the full up position. This will make life much easier getting the pump in place and the bolts started.

Some engines did not have the bolt in front. If yours doesn't, the grease trick will work.

The gaskets are different. You can clean it up, scrape the gasket, and put it back with hi-temp silicone.

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Slowpoke

02-24-2021 23:07:50




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 Re: OT: Chevy V8 Fuel pump in reply to Steve@Advance, 02-23-2021 18:34:23  
Removed inner plate, greased rod and it stayed up!



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Hobo,NC

02-23-2021 18:33:43




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 Re: OT: Chevy V8 Fuel pump in reply to Slowpoke, 02-23-2021 15:34:36  
When the hold'em bolt is hard to get at I bump the starter till the pump shaft is on the low spot of the cam. Then I sharpen the end of the fuel pump lever on my bench grinder insert the pump in the hole again the pump drive shaft and flip the shaft up quickly its worked for me every time over the years...
I understand what you are dealing with they are a beach but not impossible not any of it... Yours is not the run of the mill EZ one : (

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Slowpoke

02-23-2021 20:35:17




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 Re: OT: Chevy V8 Fuel pump in reply to Hobo,NC, 02-23-2021 18:33:43  
I can only get my left arm down to the mount and only one finger to push the rod up. It may take a half dozen tries and it falls right back. But I have to get under the engine to turn the crank with a socket and ratchet to try and find the low on the cam. I think it's a two man job!



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gab

02-23-2021 18:32:22




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 Re: OT: Chevy V8 Fuel pump in reply to Slowpoke, 02-23-2021 15:34:36  
For years I had a piece of stiff wire with a finger loop on one end and a bend on the other to get behind the pushrod and hold it up while you slip a hacksaw blade under it.



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Slowpoke

02-23-2021 20:47:54




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 Re: OT: Chevy V8 Fuel pump in reply to gab, 02-23-2021 18:32:22  
I tried the hacksaw blade but can't get two hands in there to remove the blade and slip the pump in at the same time.
I'll try to remove the inner plate and pull the rod out and grease it with heavy grease. I just wonder why there are two identical gaskets in the box. All ads I see for the pump show two gaskets. They would not have two unless there was a reason for the extra one.
Thanks,
Slowpoke

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Steve@Advance

02-24-2021 08:12:41




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 Re: OT: Chevy V8 Fuel pump in reply to Slowpoke, 02-23-2021 20:47:54  
I've never gotten one with 2 gaskets.

It's just some error on the part of the company packaging it. Don't be concerned over it.

Maybe they just want to be nice and assume the first one might get torn trying to install it!



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moonlite37

02-23-2021 17:48:26




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 Re: OT: Chevy V8 Fuel pump in reply to Slowpoke, 02-23-2021 15:34:36  
I learned the secret bolt trick a very hard way beside the road.



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roy prins

02-23-2021 17:29:13




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 Re: OT: Chevy V8 Fuel pump in reply to Slowpoke, 02-23-2021 15:34:36  
wore out has it right -- simple as can be! Roy



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P I Pete

02-23-2021 16:39:08




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 Re: OT: Chevy V8 Fuel pump in reply to Slowpoke, 02-23-2021 15:34:36  
Would it be possible to pull rod out cover with real sticky grease so it will stay in place?

Pete



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Slowpoke

02-24-2021 23:03:47




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 Re: OT: Chevy V8 Fuel pump in reply to P I Pete, 02-23-2021 16:39:08  
It worked!



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wore out

02-23-2021 16:02:06




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 Re: OT: Chevy V8 Fuel pump in reply to Slowpoke, 02-23-2021 15:34:36  
There's a bolt on the front of engine that lines up with the fuel pump pushrod. Take it out and install a longer bolt (3/8" NC X 1-1/2", IIRC) finger-tight ONLY to hold pushrod in/up until you get the fuel pump bolted on, then remove long bolt and replace with original bolt.

Install the "holding bolt" BEFORE removing the oild pump so the rod can't slide "down" against the cover. If it already has, push the pushrod "up" with a hacksaw blade or similar thin object while snugging the bolt against it.

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Slowpoke

02-23-2021 20:25:15




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 Re: OT: Chevy V8 Fuel pump in reply to wore out, 02-23-2021 16:02:06  
The only bolt in the side is the battery ground cable. From under the van I can't tell if it lines up with the rod.
But I will remove it and put in a longer bolt and see if it contacts the rod.
Thanks



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Slowpoke

02-24-2021 23:12:37




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 Re: OT: Chevy V8 Fuel pump in reply to Slowpoke, 02-23-2021 20:25:15  
I found the bolt, but cannot get a socket on it: it's buried behind rad hose and tranny lines.



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billfromwisconsin

02-23-2021 15:59:20




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 Re: OT: Chevy V8 Fuel pump in reply to Slowpoke, 02-23-2021 15:34:36  
use an old hack saw blade bent about 45 on one end. You can hold the rod up with that and pull it out when you get the pump lever under it. Some times if you turn the engine over a little bit it helps to so the cam eccentric is all the way up and not pushing the rod down.



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Scott 730

02-23-2021 15:53:02




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 Re: OT: Chevy V8 Fuel pump in reply to Slowpoke, 02-23-2021 15:34:36  
There is a bolt in the front of the block that is directly in line with the fuel pump push rod. Remove that bolt and temporarily replace it with a longer one that will pinch the push rod in place. Small blocks been that way forever.



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Gambles

02-23-2021 16:02:26




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 Re: OT: Chevy V8 Fuel pump in reply to Scott 730, 02-23-2021 15:53:02  
Scott's post will be the most accurate one there will be on this subject. Yes, it's been there forever (or since the beginning of the small block Chevy) because this threaded hole was used for the motor mount for the '55 or '57 Chevy, or sometime around then.



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Slowpoke

02-24-2021 23:15:25




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 Re: OT: Chevy V8 Fuel pump in reply to Gambles, 02-23-2021 16:02:26  
Can't get to the bolt.....



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uncletom

02-24-2021 04:49:56




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 Re: OT: Chevy V8 Fuel pump in reply to Gambles, 02-23-2021 16:02:26  
Yup, that bolt has been in the blocks for ever. In fact there were 2 bolts on most of the small blocks clear back in 1955. The 55 had motor mounts in the front and one of the mount bolt holes would give you axces to the fuel pump push rod. Back in the day we use to have a 55 chevy 4 door sleeper with close to 500 hp. This would allow us to put a custom 350 in the 55 using the original 55 motor mounts.

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MIangus

02-24-2021 07:47:39




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 Re: OT: Chevy V8 Fuel pump in reply to uncletom, 02-24-2021 04:49:56  
I have seen blocks where that bolt hole is not drilled or threaded. I put a 307 in a 58 suburban and I had to drill and thread the hole. I replaced the 307 with a small journal 327. Ended up with more motor than brakes.



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