73-87chevytrucks.com
73-87 Chevy _ GMC Trucks => Performance => Topic started by: mikewb on August 14, 2007, 01:48:22 pm
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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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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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by how much? enough that its worth it to buy one?
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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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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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What im runnin is a 350 with mild cam headers dual exhaust edelbrock performer intake and carb
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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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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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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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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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ok . I might trade somebody my edelbrock for a qjet
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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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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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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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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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Well I got about the same milage so far with my qjet to holley 600 carb swap. My qjet was in really bad shape though.
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I was getting about 15 with my 305 and out of tune E4M Q-jet. I expect better with my 350 and Edelbrock #1406 (yes, I cheaped out and decided to stick with carb over EFI). I would think the difference between a dialed-in Q-Jet and a dailed-in Edelbrock couldn't be more than 1 mpg. (i hope)
By the way if you want to rebuild and tune a Q-Jet. Pick up a copy of Doug Roe's Rochester Carburetors (http://www.amazon.com/Rochester-Carb-Hp014-Doug-Roe/dp/0895863014/ref=sr_11_1/105-1053112-5621266?ie=UTF8&qid=1187710942&sr=11-1). A valuable tool for messing around with these carbs.