Are the 9000 series AFBs any better than an Edelbrock?
#943846
03/06/11 01:16 AM
03/06/11 01:16 AM
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Joined: Apr 2007
Posts: 2,327 Glendale, AZ
69L78Nova
OP
Banned. Forever.
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OP
Banned. Forever.
Joined: Apr 2007
Posts: 2,327
Glendale, AZ
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A friend of mine has a 625 CFM 9635S Competition Series AFB, and I was wondering if it would be any better than a 1406. I can't get rid of this hot start problem with my 1406. I know the original AFBs and AVSs didn't have problems like these new carbs have. Just wanted to see if it would be any better than the Eddy, or if it is a "Weber wonder" as well. It would be going on my 78 Fury, LA 360, magnum heads, dual plane M1, xe256, 2200 stall, 3.55s, headers and 2.5" duals. Or would I be better off with an old AVS or vacuum secondary Holley?
1969 Nova 454/M21/3.31 Mild mid-11 second weekend cruiser
1994 F150 XLT Super Cab 2WD 5.0/4R70W/3.55 (Daily driver)
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Re: Are the 9000 series AFBs any better than an Edelbrock?
[Re: RUNCHARGER]
#943848
03/06/11 04:55 AM
03/06/11 04:55 AM
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Joined: Jun 2004
Posts: 3,319 Chicago Burbs
sthemi
master
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master
Joined: Jun 2004
Posts: 3,319
Chicago Burbs
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I have one of those on my 68 Charger. Been there for 15+ years.. A really great carb, jetted a little fat for stock motors. Great performance. Before you swap carbs, intstall a thick carb gasket. 3/8 works well. Today fuel is crap, works with fuel Injection but not real carb friendly. I also have an electric pump in back to help with fuel boiling. The factory vapor seperator will allow a small amount of hot fuel to return to the tank..that should help a bit as well.
Last edited by sthemi; 03/06/11 04:56 AM.
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Re: Are the 9000 series AFBs any better than an Edelbrock?
[Re: sthemi]
#943849
03/06/11 05:18 AM
03/06/11 05:18 AM
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Joined: Jan 2007
Posts: 1,668 Mi,U.S.A.
mike s
top fuel
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top fuel
Joined: Jan 2007
Posts: 1,668
Mi,U.S.A.
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Change to a hi volume mechanical pump (carter,holley etc)and use the heat dissipating thick carb gasket as mentioned above.Problem over.
Leave the gun.......take the Cannoli's....Mike
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Re: Are the 9000 series AFBs any better than an Edelbrock?
[Re: mike s]
#943850
03/06/11 11:51 AM
03/06/11 11:51 AM
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Joined: Apr 2007
Posts: 2,327 Glendale, AZ
69L78Nova
OP
Banned. Forever.
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OP
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Glendale, AZ
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I already have the thick insulator gaskets from edelbrock. It helped a little, but still having problems. I have over a dozen great running Thermoquads, but can't use an adapter plate due to available hood clearance. I prefer Thermoquads over anything
1969 Nova 454/M21/3.31 Mild mid-11 second weekend cruiser
1994 F150 XLT Super Cab 2WD 5.0/4R70W/3.55 (Daily driver)
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Re: Are the 9000 series AFBs any better than an Edelbrock?
[Re: 69L78Nova]
#943853
03/06/11 12:23 PM
03/06/11 12:23 PM
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Joined: Jan 2003
Posts: 75,099 A Banana Republic near you.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,099
A Banana Republic near you.
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Quote:
I forgot to add there is also a huge bog when the secondaries kick open. I went back to box stock jetting, Even at 3500rpm, it will fall on its face for a second or two. It won't even break the tires loose if ya give it a stall and try to launch it. It's also getting about 8mpg.
Sounds like the carb is way out of tune which ins't surprising if you have it out of the box set,, adding the other carb may or may not fix it , ask your friend if you can try it and see how it runs .
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Re: Are the 9000 series AFBs any better than an Edelbrock?
[Re: JohnRR]
#943855
03/06/11 12:33 PM
03/06/11 12:33 PM
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Joined: Apr 2007
Posts: 2,327 Glendale, AZ
69L78Nova
OP
Banned. Forever.
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OP
Banned. Forever.
Joined: Apr 2007
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Glendale, AZ
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Yeah, I dont mind making this carbs work, but I wish I knew a good starting point as far as jetting. I hate to just start throwing jets a it since they're about $10 a pair.
1969 Nova 454/M21/3.31 Mild mid-11 second weekend cruiser
1994 F150 XLT Super Cab 2WD 5.0/4R70W/3.55 (Daily driver)
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Re: Are the 9000 series AFBs any better than an Edelbrock?
[Re: Hoof Hearted]
#943856
03/06/11 12:34 PM
03/06/11 12:34 PM
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Joined: Jan 2003
Posts: 75,099 A Banana Republic near you.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,099
A Banana Republic near you.
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Quote:
Quote:
As said the hot start problem is because of the piss they pass of as gasoline , add an electric pump.
Say Whaaaaaaaaaaaaaaaaat?
Can you hear it now???
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Re: Are the 9000 series AFBs any better than an Edelbrock?
[Re: 69L78Nova]
#943857
03/06/11 02:33 PM
03/06/11 02:33 PM
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Joined: Oct 2010
Posts: 606 Montana
Yancy Derringer
mopar
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mopar
Joined: Oct 2010
Posts: 606
Montana
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Quote:
I know the original AFBs and AVSs didn't have problems like these new carbs have.
You can't blame a hot start problem on the carb.
I'm starting to wonder if stuff like these blue pumps with non-return regulators might actually exaggerate vapor problems.
Frankly the first thing I'd do is get a vapor return system in the car. If you use an inline filter up front, Wix makes a couple with vapor return built into the filter
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