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#1 |
Registered User
Join Date: Mar 2010
Location: Hydro, OK
Posts: 89
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New Carb
Just swapped the quadrajet for an Edelbrock 600 performer. Runs great after hitting the throttle but sure idles rough. I hooks a vacuum gauge to it and set the idle mixture at high vacuum but still sounds like it has a race cam in it!!
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#3 |
Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,594
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Re: New Carb
Vacuum leak!!! What kind of adaptor did you use?
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#4 |
Registered User
Join Date: Mar 2010
Location: Hydro, OK
Posts: 89
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Re: New Carb
Used an edelbrock 4 hole quad to square bore adapter.
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#5 |
Registered User
Join Date: Mar 2010
Location: Hydro, OK
Posts: 89
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Re: New Carb
Where's the air-fuel mixture screw?
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#6 |
Grandpa in the rustmobile...
Join Date: Nov 2008
Location: Spokane WA/Viola TN
Posts: 11,422
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Re: New Carb
it only has 2 screws 1 is air 1 is fuel I believe
__________________
John Goose-1968 C10 355,9.32-1CR, Vortec Heads ,262 voodoo, 3.73:1 3OTT (HS ride/beater/farm truck) http://67-72chevytrucks.com/vboard/s...d.php?t=317684 Grams 53-1953 Chevrolet Belair http://67-72chevytrucks.com/vboard/s...=1#post4327784 1969 Chevy C10 Shortbed 4.5/6?" Frame off resto http://67-72chevytrucks.com/vboard/s...d.php?t=548136 1999 Toyota Tacoma 4x4 |
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#7 |
Registered User
Join Date: Mar 2010
Location: Hydro, OK
Posts: 89
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Re: New Carb
Could it be the float level? I took the vacuum plug off to hook the gauge up and it idled smoother.
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#9 |
Desert Rat
Join Date: Jul 2010
Location: Mojave Desert
Posts: 169
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Re: New Carb
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#10 |
Registered User
Join Date: Mar 2010
Location: Hydro, OK
Posts: 89
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Re: New Carb
Can't find any vacuum leaks. maybe it ain't supposed to idle smooth!
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#11 |
BAD BOW-Silverado XST
Join Date: May 2000
Location: Senior Member from Austin, TX
Posts: 6,431
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Re: New Carb
If you have a vacuum leak, the gauge would tell you. Is the needle steady or moving? What are the RPMs at idle? Which tranny are you running? A 700R4 should have the angle correction bracket installed.
http://www.centuryperformance.com/tu...e-spg-148.html |
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#12 |
Registered User
Join Date: Mar 2010
Location: Hydro, OK
Posts: 89
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Re: New Carb
it has the 700r4 bracket. vacuum gauge is a little jumpy. sprayed ether around fittings and no reaction.
Did readjust float level and helped a little. |
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#13 |
Registered User
Join Date: Dec 2010
Location: sioux city, iowa
Posts: 619
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Re: New Carb
GO TO Edelbrock.com. They have a bunch of tuning videos for their carbs. Very informative.
http://www.edelbrock.com/automotive_...ech_vids.shtml Last edited by rayfinseats; 03-13-2011 at 10:41 PM. |
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#14 |
Registered User
Join Date: Mar 2010
Location: Hydro, OK
Posts: 89
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Re: New Carb
Anybody ever drill holes in the primary butterfies?
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#15 |
Registered User
Join Date: May 2010
Location: laurel hill Fl
Posts: 645
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Re: New Carb
How did you install the egr? mine was sucking air through the manifold and it ran super high and rough. If you need a block off for the egr take the spacer on the egr fill with jb weld bake at 400 for 30m and place gasket sealer on it
__________________
1985 C10 Custom Deluxe LWB 305/700r4 [ Goldfinger ] ![]() 1999 k3500 crew cab dually 6.5tdi/4l80e |
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#16 |
Registered User
Join Date: Mar 2010
Location: Hydro, OK
Posts: 89
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Re: New Carb
Will do. Thanx!!
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#17 |
Registered User
Join Date: Mar 2010
Location: Hydro, OK
Posts: 89
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Re: New Carb
Just blocked off the EGR valve and it idle as smooth as the top of my head!! Thanks for all the advice!!
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#18 |
BAD BOW-Silverado XST
Join Date: May 2000
Location: Senior Member from Austin, TX
Posts: 6,431
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Re: New Carb
Yea, I run mine without the EGR valve!!
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#19 |
Grandpa in the rustmobile...
Join Date: Nov 2008
Location: Spokane WA/Viola TN
Posts: 11,422
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Re: New Carb
Whats the EGR tube lol
__________________
John Goose-1968 C10 355,9.32-1CR, Vortec Heads ,262 voodoo, 3.73:1 3OTT (HS ride/beater/farm truck) http://67-72chevytrucks.com/vboard/s...d.php?t=317684 Grams 53-1953 Chevrolet Belair http://67-72chevytrucks.com/vboard/s...=1#post4327784 1969 Chevy C10 Shortbed 4.5/6?" Frame off resto http://67-72chevytrucks.com/vboard/s...d.php?t=548136 1999 Toyota Tacoma 4x4 |
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#20 |
Registered User
Join Date: May 2010
Location: laurel hill Fl
Posts: 645
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Re: New Carb
Glad it worked for you. The egr is just an obstruction anyway.
__________________
1985 C10 Custom Deluxe LWB 305/700r4 [ Goldfinger ] ![]() 1999 k3500 crew cab dually 6.5tdi/4l80e |
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