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Re: [GMCnet] Carb fuel filters [message #327129 is a reply to message #327121] Fri, 15 December 2017 10:37 Go to previous messageGo to previous message
powwerjon is currently offline  powwerjon   United States
Messages: 849
Registered: March 2013
Karma:
Senior Member
Here are some good pictures of the fuel filter and how it is installed. You can put them in backwards, ask me how I know!

http://www.gmcmhphotos.com/photos/general-pictures/p58270-img-07751.html
http://www.gmcmhphotos.com/photos/general-pictures/p58271-img-07761.html
http://www.gmcmhphotos.com/photos/general-pictures/p58269-fuel-system-q-jet.html
http://www.gmcmhphotos.com/photos/general-pictures/p58268-q-jet-fuel-filter.html

J.R. Wright
GMC GreatLaker 18 Year Member
GMCGL Tech Editor
GMC Eastern States Charter Member
GMCMI 18 Year Member
78 Buskirk 30' Stretch
1975 Avion (Under Reconstruction)
Michigan

> On Dec 14, 2017, at 10:19 PM, Ken Burton wrote:
>
> A note on the fuel filter inside the 455 or 403 carb.
>
> It turns out that there are 2 different filter listed both by Ac Delco and Wix. In 1976 GM changed ALL filters of this type in all vehicles using
> that filter. The change was adding a little rubber flapper check valve on the entrance side of the filter.
>
> Either filter will fit in all years of our 455 and 403 engines with Quadrajet carbs.
>
> AC Delco GF441 or Wix 33148 is the one without the check valve. (pre 1976)
> AC Delco GF471 or Wix 33152 is the later version with the internal check valve and cost $1.80 more. (listed as 1976 and later)
>
> I did not check out other brands and I also have no recommendation on which version to use.
> --
> Ken Burton - N9KB
> 76 Palm Beach
> Hebron, Indiana

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