Home » Public Forums » GMCnet » [GMCnet] Trick to screw fuel line into carb?
| Re: [GMCnet] Trick to screw fuel line into carb? [message #323092 is a reply to message #323091] |
Fri, 01 September 2017 06:55   |
James Hupy
Messages: 6806
Registered: May 2010
Karma: -62
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Senior Member |
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There are at least 2 carb inlet filters for the Q-jet. One, long version is
used on the 455. It is a difficult one to start the fuel line threads on
because of the proximity of the thermostat housing.
The second version is shorter, and uses a shorter filter. It has more
clearance to start the threads from the fuel line. I converted my line to
AN-6 braided stainless steel, covered with insul-sleeve. The line is
flexible and much easier to handle.JWID.
Jim Hupy
Somewhere on the Blue Danube.
On Sep 1, 2017 4:25 AM, "Chris Geils via Gmclist"
wrote:
> If anyone is looking for a replacement pump-to-carb fuel line, Inline tube
> makes a reproduction part for a '73-'76 Olds cutlass that should work;
>
> https://docs.wixstatic.com/ugd/4d7af2_9dac1b92b352467ab9d76476103e76ce.pdf
>
> They also make a similar part for '77 cutlass with 403.
> Fortunately our GMCs share a few parts with the desirable classic car
> world.
> One caveat; The plane of the carb flange is angled slightly differently on
> rwd vs fwd Olds engines, due to the position of the engine as installed in
> the vehicle. Rwd Olds v8s, like most rwd v8s, position the engine with
> the crankshaft axis dipping toward the trans and rear axle for alignment,
> while the Toronado has the crankshaft axis more parallel to the ground.
> They designed each intake manifold to place the carb parallel to the ground
> for proper float level orientation. The carb mounting flange tips
> "forward" on a rwd manifold, and relatively "rearward" on Toronado. This
> angularity would make a very slight difference in the fuel line as well,
> but I suspect it could be made to work by tightening the carb last. Inline
> tube also offers a '67 Toronado fuel line that might be closer to our
> original part...for $25 this should beat trying to bend something from
> scratch.
>
>
> --
> Chris Geils - Twin Cities
> 1978 26' Kingsley w/ very few mods; Headers, Progressive Dynamics 9040,
> aux trans cooler, one repaint in stock colors, R134a, Al rad, 50k mi
>
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| Re: [GMCnet] Trick to screw fuel line into carb? [message #323095 is a reply to message #323076] |
Fri, 01 September 2017 08:05 |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma: 9
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Senior Member |
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John,
"Worth the cost" is too subjective to be answered easily. I'll just say
I'm glad I converted to EFI and won't be going back. I also won't be going
back to EFI without the EBL upgrade. After installing EFI, I had an
apparently un-cureable off-idle stumble. Installing EBL immediately cured
that, as well as giving me complete control of the system and opening many
other options.
As for mileage gain, I don't claim to have seen any during the time I ran
in on a 455, and certainly not with my Cad500.
Recognize that I'm a perennial "tinkerer", with almost nothing, other than
the bare shell, original on my GMC. Unless you like tinkering with your
engine, & computers, I'd have to say "No, it's not worth the cost".
Ken H.
Americus, GA
'76 X-Birchaven w/Cad500/Howell EFI & EBL,
Manny Brakes & 1-Ton, etc., etc., etc.
, etc.
www.gmcwipersetc.com
On Fri, Sep 1, 2017 at 12:35 AM, John Phillips
wrote:
> Thank you, Ken
> Is changing to an EBL/EFI system worth the cost for an average user? Do you
> get a significant mileage gain?
>
>
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Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
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| Re: [GMCnet] Trick to screw fuel line into carb? [message #323101 is a reply to message #323026] |
Fri, 01 September 2017 10:02 |
Sandra Price
Messages: 709
Registered: May 2006
Karma: 1
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Senior Member |
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Been following this thread and wholeheartedly agree with you, Ken.
Bob Price
On Sep 1, 2017 9:07 AM, "Ken Henderson" wrote:
John,
"Worth the cost" is too subjective to be answered easily. I'll just say
I'm glad I converted to EFI and won't be going back. I also won't be going
back to EFI without the EBL upgrade. After installing EFI, I had an
apparently un-cureable off-idle stumble. Installing EBL immediately cured
that, as well as giving me complete control of the system and opening many
other options.
As for mileage gain, I don't claim to have seen any during the time I ran
in on a 455, and certainly not with my Cad500.
Recognize that I'm a perennial "tinkerer", with almost nothing, other than
the bare shell, original on my GMC. Unless you like tinkering with your
engine, & computers, I'd have to say "No, it's not worth the cost".
Ken H.
Americus, GA
'76 X-Birchaven w/Cad500/Howell EFI & EBL,
Manny Brakes & 1-Ton, etc., etc., etc.
, etc.
www.gmcwipersetc.com
On Fri, Sep 1, 2017 at 12:35 AM, John Phillips
wrote:
> Thank you, Ken
> Is changing to an EBL/EFI system worth the cost for an average user? Do
you
> get a significant mileage gain?
>
>
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