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GMC V6 and V12 Engines Engine repair and rebuilding

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  #1  
Old April 5th, 2019, 04:03 PM
melmashman melmashman is offline
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Default 65 305e Fuel Pump Question

My 65 GMC V6 305e engine needs a fuel pump. I think a Carter M3955 fuel pump is a replacement, but I am not sure.
Does anyone know if that is the correct replacement? I can purchase it via Amazon from a vender.
Thanks for your help.
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  #2  
Old April 5th, 2019, 04:36 PM
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Default Re: 65 305e Fuel Pump Question

I used Precision part number M20021 from O'Reilly's Auto Parts. Lifetime warranty too.
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Old April 5th, 2019, 06:18 PM
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Default Re: 65 305e Fuel Pump Question

Quote:
Originally Posted by FetchMeAPepsi View Post
I used Precision part number M20021 from O'Reilly's Auto Parts. Lifetime warranty too.


The photo of M20021 is different than what my current fuel pump looks like. My current pump looks more like the Carter M3955 with a high cylinder shape above it rather than a nut on top. Are you sure that fits the 305e rather than the 305c? Thanks for your help!



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Old April 5th, 2019, 06:27 PM
melmashman melmashman is offline
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Default Re: 65 305e Fuel Pump Question

My current fuel pump looks like this.
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Old April 5th, 2019, 07:58 PM
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Default Re: 65 305e Fuel Pump Question

That's what my old one looked like. Here's the thread with a bunch of pictures

https://6066gmcclub.com/showthread.p...0021#post59047
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Old April 5th, 2019, 09:34 PM
melmashman melmashman is offline
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Default Re: 65 305e Fuel Pump Question

Your pictures are great. It looks just like my fuel pump. The picture of the Precision M20021 on the oreillyauto.com web site is very different at first glance. I realized my mistake. The Precision photo shows the underside of the filter. Daaaaah. I will order it for my 305e. Thanks for bearing with my quick observation mistake.
Question: Is there any position the pump’s cam area has to be in when you remove and replace it? Can I just pull it out and stick the new one back in? Does it go in guided or do I have to be precise when sticking the cam arm back in? Sorry - so many questions:-(
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Old April 6th, 2019, 04:29 AM
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Default Re: 65 305e Fuel Pump Question

Quote:
Originally Posted by melmashman View Post
Your pictures are great. It looks just like my fuel pump. The picture of the Precision M20021 on the oreillyauto.com web site is very different at first glance. I realized my mistake. The Precision photo shows the underside of the filter. Daaaaah. I will order it for my 305e. Thanks for bearing with my quick observation mistake.
Question: Is there any position the pump’s cam area has to be in when you remove and replace it? Can I just pull it out and stick the new one back in? Does it go in guided or do I have to be precise when sticking the cam arm back in? Sorry - so many questions:-(

Thanks!
There's nothing special you have to do. Just pull the old one out, slide the new one in, and off ya go! You may have to prime it if it's been dry for a while.
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