| Re: [GMCnet] Who has TBI or Port EFI on there 455? [message #228007] |
Thu, 31 October 2013 21:10  |
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hnielsen2
Messages: 1434
Registered: February 2004
Location: Alpine CA
Karma:
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Senior Member |
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Tony
I installed a Howell TBI system about eight years ago.
Took me two day as I'm a little picky when it came routing fuel lines and the electrical
I did not like the rubber only fuel lines that came with the kit.
I upgraded to marine fuel hose with stainless steal braided covering.
My reason easy start no matter how long the GMC has been sitting, engine is getting the same fuel and air mix no matter the altitude.
No gas smell when shutting down.
Have never looked back.
One point it did not improve the MPG
I do not have the distributor hooked up to the system.
I have been told we would get better MPG with the distributor also controlled by the computer?
Here is where Jim K will jump in and tell me to come by his shop and he will fix me up
Howell did not offer it eight years ago.
I would go to Jim K he has the full set up.
Have him install it or DIY
Jim and his guys know the Howell system.
Howard
Alpine Ca
74 Canyon Lands
Running a 455 with TBI, cam, Patterson distributed, roller rocker, Mondelo(sp?) push rods and dual roller timing chain.
As Jim B will tell you Hot Rod with plumbing.
All is well with my Lord
> On Oct 31, 2013, at 7:52, Tony <Ultravanman248@yahoo.com> wrote:
>
>
>
> Normally with EFI one has more low end torque over a carb setup and you can get better MPG.
>
> Did you install it?
>
> I would like to hear from those who have installed either system (TBI or Port Injection) and what your thoughts were. Also and Pros and Cons.
>
> Thank you for your input.
>
> Tony
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