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Author Topic: carburetors  (Read 10539 times)

Offline mikewb

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carburetors
« on: August 14, 2007, 01:48:22 pm »
wondering how much difference in mileage there is if any between a quadrajet and a 600 edelbrock. someone said that quadrajets get better . if soo thinkin about doing a change
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Offline Captkaos

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Re: carburetors
« Reply #1 on: August 14, 2007, 02:26:47 pm »
by design a q-jet with smaller primaries (with your foot out of it) will yeild better fuel mileage than the edelbrock.
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Offline mikewb

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Re: carburetors
« Reply #2 on: August 14, 2007, 05:12:50 pm »
by how much? enough that its worth it to buy one?
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Offline Captkaos

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Re: carburetors
« Reply #3 on: August 14, 2007, 05:22:20 pm »
What are you getting now for MPG?  price worth it depends on how well you are getting now.  If the q-jet was free that would be another story.  Generally about 15-17 mpg is doable on a stock setup.
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Offline mikewb

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Re: carburetors
« Reply #4 on: August 14, 2007, 05:50:56 pm »
Now im getting 8 if lucky... soo... How much is it to rebuld one if i could get one for free..?
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Offline mikewb

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Re: carburetors
« Reply #5 on: August 14, 2007, 05:56:20 pm »
What im runnin is a 350 with mild cam headers dual exhaust edelbrock performer intake and carb
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Offline Captkaos

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Re: carburetors
« Reply #6 on: August 14, 2007, 10:46:55 pm »
Quote from: mikewb on August 14, 2007, 05:50:56 pm
Now im getting 8 if lucky... soo... How much is it to rebuld one if i could get one for free..?
About $25 and a little time.  How much are you in it?  Alot, a little...
It is really hard to say since I don't exactly know what you have, but I had a stock 81 K10 with a crate 350 and a q-jet and it got 12 mpg
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Offline 123 pugsy

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Re: carburetors
« Reply #7 on: August 15, 2007, 09:11:47 am »
I'm getting between 10 and 14 with my LWB 350 Edelbrock carb,RV cam, 3.4 gears. Don't forget that we have a larger gallon up here.
That would probably work out to 8-12 per US gal.
It looks like the Edelbrock carb is not good for milage.
Everyone on the board keeps mentioning these good milage figures and I keep scratching my head as to how they get it. :o   ......see what happens with the TPI....
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Pugsy
76 C10 LWB
TPI 350

Offline Captkaos

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Re: carburetors
« Reply #8 on: August 15, 2007, 10:25:10 am »
my 87 R10 with TBI gets almost 22mpg on the highway.  I actually am checking the mpg for city driving again right now.
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Offline Uno99

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Re: carburetors
« Reply #9 on: August 15, 2007, 01:00:12 pm »
I was getting 15-18MPG with my qjet.  I am swapping my qjet out today.  I may be getting rid of it. I am goingto clean it up then I'll send you a PM with some pics.
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1981 GMC High Sierra SBO 350 LT Headers 2.5" Tru Duals, H-pipe, Flowmaster SUPER 44 Mufflers 2000 TCI Stall PICS http://www.cardomain.com/ride/2410355

Offline mikewb

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Re: carburetors
« Reply #10 on: August 15, 2007, 05:37:01 pm »
ok . I might trade somebody my edelbrock for a qjet
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Offline 123 pugsy

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Re: carburetors
« Reply #11 on: August 15, 2007, 07:06:03 pm »
Quote from: Captkaos on August 15, 2007, 10:25:10 am
my 87 R10 with TBI gets almost 22mpg on the highway.  I actually am checking the mpg for city driving again right now.

WOW!  :o  And that's with a U.S. gallon!
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Pugsy
76 C10 LWB
TPI 350

Offline Captkaos

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Re: carburetors
« Reply #12 on: August 16, 2007, 12:35:26 pm »
Yep, I was HIGHLY impressed.  My brother with his 2000 5.3L with a Turbo and got 25mpg on the same trip.
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Offline joesgarage71

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Re: carburetors
« Reply #13 on: August 19, 2007, 05:55:13 pm »
Quote from: Captkaos on August 16, 2007, 12:35:26 pm
Yep, I was HIGHLY impressed.  My brother with his 2000 5.3L with a Turbo and got 25mpg on the same trip.

Chris,
 who tuned the ECM for your brother?
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78' K-20 355/SM465/twin stick 205 6" on 36's
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Offline Captkaos

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Re: carburetors
« Reply #14 on: August 20, 2007, 11:23:20 am »
We tune them.  www.gracemotorsports.biz is the website.
Last time it was 525hp 610lb/ft on 12lbs of boost.  We are going to tune the 6.0L in my 73-87chevytrucks.com truck once the turbos goes on..
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