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5.7 and 6.1 oil pumps, how to tell the difference? #2585718
12/01/18 04:36 PM
12/01/18 04:36 PM
Joined: Feb 2003
Posts: 18,582
Rust Belt, SW PA
Silver70 Offline OP
I Live Here
Silver70  Offline OP
I Live Here

Joined: Feb 2003
Posts: 18,582
Rust Belt, SW PA
Any easy way to tell the difference of both pumps by a casting number or other marking? Looks like they have 1622 on them then a 6 7 8 etc beside that. Putting my 6.1 back together and want to use the right pump.


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Re: 5.7 and 6.1 oil pumps, how to tell the difference? [Re: Silver70] #2585918
12/02/18 01:06 AM
12/02/18 01:06 AM
Joined: Feb 2003
Posts: 18,582
Rust Belt, SW PA
Silver70 Offline OP
I Live Here
Silver70  Offline OP
I Live Here

Joined: Feb 2003
Posts: 18,582
Rust Belt, SW PA
Found out the difference is just the spring and the metal retainer cup is where the spring used is stamped. Anyone out there has a 6.1 pump sitting around they can check the number stamped on the bottom metal retainer?

Re: 5.7 and 6.1 oil pumps, how to tell the difference? [Re: Silver70] #2586025
12/02/18 09:10 AM
12/02/18 09:10 AM
Joined: Jan 2006
Posts: 1,400
Trumbauersville PA
ric3xrt Offline
pro stock
ric3xrt  Offline
pro stock

Joined: Jan 2006
Posts: 1,400
Trumbauersville PA
the only 6.1 Pump I have here at work has a 2 stamped in to it.


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Re: 5.7 and 6.1 oil pumps, how to tell the difference? [Re: Silver70] #2586235
12/02/18 06:30 PM
12/02/18 06:30 PM
Joined: Feb 2003
Posts: 18,582
Rust Belt, SW PA
Silver70 Offline OP
I Live Here
Silver70  Offline OP
I Live Here

Joined: Feb 2003
Posts: 18,582
Rust Belt, SW PA
Is that the bottom plug, pump I have has a 3 on bottom, then plug on top going more horizontal has a 2.







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