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Old 10-29-2019, 08:28 PM
694.1 694.1 is offline
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Location: SE WI
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Default 1955-1958 Oil pumps & rebuilding

These pumps are not available new, are hard to find & apparently the newer V8 pumps will not fit.
I have a pump on the way home from Egge in CA and the cost was $145 to be overhauled.
A dissection will be in order and I can post up a full report.. Maybe you guys know, I have a spare core...Would new V8 guts fit in the early housing? Should everything meet spec, this may be a viable alternative.

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  #2  
Old 10-30-2019, 12:36 AM
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Bill Hanlon Bill Hanlon is offline
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Yes, guts from a newer pump will fit. I ran Melling M54D guts in my '57 347 daily driven for about 5 years. Later pump to block gasket will not fit. You'll have to make one from very thin gasket stock available at FLAPS. Here is an old thread that goes into detail on this subject. http://forums.maxperformanceinc.com/...d.php?t=696541

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My Pontiac is a '57 GMC with its original 347" Pontiac V8 and dual-range Hydra-Matic.

Last edited by Bill Hanlon; 10-30-2019 at 12:50 AM.
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Old 10-31-2019, 05:15 PM
694.1 694.1 is offline
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Thanks for posting up that thread, it is pretty much the last word!
It looks like I spent more than I needed to...

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"At no time did we exceed 175 mph.”
Dan Gurney's truthful response to his and Brock Yate's winning of the first ever Cannonball Baker Sea-to-Shining Sea...

Still have my 1st Firebird
7th Firebird
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  #4  
Old 11-06-2019, 11:11 PM
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Got my pump back from Egge, ran $145.
They charged me $26 to ship it back, funny that it only cost $13 to ship it to them. The extra cost must have been for that warm CA sunshine in the box?
Included was this Cert from testing.
Looks like we are good to go!
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"At no time did we exceed 175 mph.”
Dan Gurney's truthful response to his and Brock Yate's winning of the first ever Cannonball Baker Sea-to-Shining Sea...

Still have my 1st Firebird
7th Firebird
57 Starchief
  #5  
Old 12-12-2019, 08:13 PM
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I picked up an NOS pump the other day & went through it to clean it up, inspect it and to de-burr everything . Attached are a couple of photos.
The first shows some high spots that I took down with a very fine stone. Interesting, an example of blurbs that are highlighted..
The second shows a spiral like cut on the bottom of the driven gear. My guess is that this is not an accident but a grove to help keep the bottom of the gear lubed?
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"At no time did we exceed 175 mph.”
Dan Gurney's truthful response to his and Brock Yate's winning of the first ever Cannonball Baker Sea-to-Shining Sea...

Still have my 1st Firebird
7th Firebird
57 Starchief
  #6  
Old 12-12-2019, 09:37 PM
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I don't remember the details, but there was talk MANY years ago on this forum about direction the driven gear should be installed on the shaft. Maybe one end was flat and the other end has kind of a bit of a cone cut into it where it met the shaft. I'll see if I can find it.

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My Pontiac is a '57 GMC with its original 347" Pontiac V8 and dual-range Hydra-Matic.
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Old 12-29-2019, 01:09 AM
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Rocky 389 Rocky 389 is offline
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Last spring I put Melling guts in my stock 347 pump, including the relief valve. Now my oil pressure is between 35 and 60, depending on temp. Much better! Photo shows the difference in thickness of cover. Melling is at least 3 times thicker.
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