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Re: Carb Choice Street Engine 440
[Re: HP2]
#1483653
08/16/13 12:53 PM
08/16/13 12:53 PM
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Joined: Jun 2008
Posts: 10,847
Oakdale CT
gdonovan
I Live Here
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I Live Here
Joined: Jun 2008
Posts: 10,847
Oakdale CT
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Quote:
Do NOT listen to people saying that you don't need a vacuum distributor on a street car. To keep your engine cold and to get good mileage you DO NEED VACUUM! Period.
With a GTX that has been driven on the street with no vacuum advance since 1986 I would not totally agree with that statement. It gets very good mpg and never runs over 170 degrees.
Filled up both of the cars in the picture at the same time and went to the same cruise an hour away and back and the blue car gets better MPG than the brown one (which my wife was driving) which is stone stock aside from a touch more timing dialed in.
To be fair even though the cars have the same displacement, transmissions and final drive gear ratio the Blue GTX has a slightly taller tire, headers and a well tuned set of AFB's.
The blue car fires up and the timing pegs to 36-38 degrees and thats it. So its not impossible and vehicles will vary in what the like.
My Duster with a 5.9 magnum? Loves timing. At cruise its at 60 degrees!
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Re: Carb Choice Street Engine 440
[Re: scratchnfotraction]
#1483657
08/17/13 11:58 AM
08/17/13 11:58 AM
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Joined: Jul 2004
Posts: 3,805
Arlington, Texas
bobby66
master
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master
Joined: Jul 2004
Posts: 3,805
Arlington, Texas
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Quote:
Quote:
I'm going to be the odd man out and say THERMOQUAD!
;-)
Really is a great carb once you learn the tricks, I'm half temped to take the pair of AFB's off my tunnel ram and swap them for TQ's.
The 800 CFM Edelbrock Thunder AVS is a fine carb and strip kits are easy to purchase.
No, I will be odd man out...I have a edelbrock/Q-Jet 750cfm thermobog replacment carb on my stock 440/RPM intake.
great carb for economy and performance, feeds the 440 with no problem,low speed throttle responce and drivabilty is as good or better than a well tuned thermobog carb.
the holley 650cfm spredbore thermobog replacment carb is a close 2nd on my stock 440.
q-jet beats it with throttle responce and mpg 
Interesting choice. Didn't Mopar use Quadrajets for a few years after they gave up on the Thermoquads? 
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Re: Carb Choice Street Engine 440
[Re: domingo]
#1483658
08/17/13 12:14 PM
08/17/13 12:14 PM
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Joined: Nov 2009
Posts: 2,177
ill
dennismopar73
top fuel
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top fuel
Joined: Nov 2009
Posts: 2,177
ill
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Quote:
Hi!
This is a street engine. Please help me on carb choice.
440 stock stroke
10,5:1 compression
MP 284° ,528" solid flat tappet MP cam
1 7/8" TTI headers
1.6 roller rockers
performer RPM intake
stealth heads unported
keilser 5 speed trans
I was thinking about using an edelbrock 800 AVS carb????
This is a street engine, not a race engine. Reliability, ease of manteinance and consistency is the main thing.
I would run a edelbrock carb if last carb ever!! pour gas out bottle first!! JMO!
Find a good avs, or quadrajet, or go with efi!! get it tuned ,
As for MSD ,It is street, do not wast your money,!!
Put a stock chrysler box on it,stock dizzy,get timing @34-36deg,
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Re: Carb Choice Street Engine 440
[Re: dennismopar73]
#1483659
08/18/13 10:02 PM
08/18/13 10:02 PM
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Joined: Mar 2005
Posts: 862
Iowa State fan
kilroy
super stock
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super stock
Joined: Mar 2005
Posts: 862
Iowa State fan
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Thermoquad Thermoquad Thermoquad
1973 Charger, former SE, former auto
I'm not trying to be difficult, it comes naturally....
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Re: Carb Choice Street Engine 440
[Re: kilroy]
#1483660
08/20/13 08:25 PM
08/20/13 08:25 PM
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Joined: Jun 2008
Posts: 565
IA
landon1
mopar
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mopar
Joined: Jun 2008
Posts: 565
IA
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I'm a fan of double pumpers.  I have a 650DP on my street 440 (Comp XE268 cam, headers, electronic ignition, rotating assembly basically stock. Went with a 650 based on Holley's website.
'71 Satellite Sebring 440
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