For reasons of preventative maintenance I would like to replace the oil pump on my 4.9L engine but cannot seem to find that any are available. Was this part discontinued, was it ever made as an aftermarket replacement part? Are rebuild kits available? What do you 4.9L guys do if you need a replacement part?

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" THE BLACK PARALYZER" -87GT 3800SC Series III engine, custom ZZP /Frozen Boost Intercooler setup, 3.4" Pulley, Northstar TB, LS1 MAF, 3" Spintech/Hedman Exhaust, P-log Manifold, Autolite 104's, MSD wires, Custom CAI, 4T65eHD w. custom axles, Champion Radiator, S10 Brake Booster, HP Tuners VCM Suite.
"THE COLUSSUS"
87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H
" ON THE LOOSE WITHOUT THE JUICE "

I believe they are not made anymore. Have you taken yours apart by chance? It would be really difficult to mess one up honestly. I am rebuilding a 4.9 right now and looked at my oil pump and it looks brand new.

There are a few rebuild parts available but many of the main parts of the 4.9 have been discontinued. It's a pretty bullet proof engine fortunately. Might have to look at a pick n pull if you have to replace it.

quote Originally posted by Dennis LaGrua: For reasons of preventative maintenance I would like to replace the oil pump on my 4.9L engine but cannot seem to find that any are available. Was this part discontinued, was it ever made as an aftermarket replacement part? Are rebuild kits available? What do you 4.9L guys do if you need a replacement part?

Dennis, research this and see if it helps.

https://www.ebay.com/itm/Fo...le%7CMake%3ACadillac


Spoon


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"Kilgore Trout once wrote a short story which was a dialogue between two pieces of yeast. They were discussing the possible purposes of life as they ate sugar and suffocated in their own excrement. Because of their limited intelligence, they never came close to guessing that they were making champagne." - Kurt Vonnegut

[This message has been edited by Spoon (edited 04-01-2020).]

quote Originally posted by Spoon: Dennis, research this and see if it helps. [URL=https://www.ebay.com/itm/For-1994-2005-Cadillac-DeVille-Oil-Pump-28626GN-1995-1996-1997-1998-1999-2000/392402065943?hash=item5b5cfc5a17%3Ag%3AVJgAAOSwA%7EpdZdi8%3Asc%3AFedExHomeDelivery%2119320%21US%21-1&fits=Year%3A1994%7CModel%3ADeVille%7CMake%3ACad illac]https://www.ebay.com/itm/Fo...le%7CMake%3ACadillac[/URL] Spoon

Thanks for the lead Charlie, but the item is not described correctly in the ad. That's a Northstar oil pump.

quote by Neils88 There are a few rebuild parts available but many of the main parts of the 4.9 have been discontinued. It's a pretty bullet proof engine fortunately. Might have to look at a pick n pull if you have to replace it.

The pump develops full pressure but when I changed the oil it took a while to come up, like 10-15 seconds with a full oil filter. Although my engine is low mileage 61K I don't think that the owner changed the oil that often. Now on the second oil change since I've had it. On the first change,the old oil was black.. Now on the second change, the oil is clean. The leakdown rate is very low and well within the spec of a low mileage engine. I don't really need to change the pump but always like to err on the side of caution.


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" THE BLACK PARALYZER" -87GT 3800SC Series III engine, custom ZZP /Frozen Boost Intercooler setup, 3.4" Pulley, Northstar TB, LS1 MAF, 3" Spintech/Hedman Exhaust, P-log Manifold, Autolite 104's, MSD wires, Custom CAI, 4T65eHD w. custom axles, Champion Radiator, S10 Brake Booster, HP Tuners VCM Suite.
"THE COLUSSUS"
87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H
" ON THE LOOSE WITHOUT THE JUICE "

[This message has been edited by Dennis LaGrua (edited 04-01-2020).]