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#1 |
Slots go on anything!
Join Date: May 2003
Location: Richardson, TX
Posts: 5,957
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need Edelbrock tuning help
How do you establish the base tune on an Edelbrock 1406? I thought it was closing the two screws at the bottom, then opening them until it runs rough? Mine still has a really rough idle, like it has a HUGE cam. I highly doubt it, and my mileage sucks as well. Please help!
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1974 Jimmy- 5.3/4L80e/NP241 |
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#2 |
BAD BOW-Silverado XST
Join Date: May 2000
Location: Senior Member from Austin, TX
Posts: 6,431
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Go buy a vacuum then read this web page.
http://www.centuryperformance.com/vacuum.asp |
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#3 |
BAD BOW-Silverado XST
Join Date: May 2000
Location: Senior Member from Austin, TX
Posts: 6,431
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One more web page.
http://www.bob2000.com/carb.htm |
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#4 |
Garage Queen Material
Join Date: Oct 2002
Location: USA
Posts: 4,129
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mine still runs rough at idle with my carb.........
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#5 |
My Name Is Mudd
Join Date: Feb 2004
Location: Bangor, Maine
Posts: 101
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I have a 1406 on my 305, and when it's all warmed up it idles very smooth. Sometimes something in it sticks and it idles a bit rough, but a few runs at full throttle usually gets everything back in order. I set mine by turning both screws all the way in and then both out a turn and a half. I then started it and adjusted ther idle screw(at the linkage for the throttle) for a proper idle speed. This has worked pretty well, but I have taken the screws another quarter to half a turn out trying to get it right. I did all the adjustments with the engine warmed up. This helped my truck so you could try it yoo. Count how many turns your screws go in just so you can put them back if you have problems with my method. Just keep trying different adjustments as long as thing improve. Don't forget to check your timing after you adjust
matt ![]() |
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#6 |
Tonawanda 454
Join Date: Mar 2004
Location: Liquid Sunshine State
Posts: 2,755
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i am planning on getting a 750 cfm performer rebuild and seems that it is fairly easy to just swap it out without too many problems... i know at summit.com they have adjustment springs for all their carbs.
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91 Chevy Suburban Tonawanda 454 R2500 - SOLD!!! ![]() 04 Dodge Durango 5.7L Hemi 2WD, 24K miles (as of July 2011) In the past 30 years about 90% of Fords are still on the road, the other 10% made it home. ------------------- |
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#7 |
Stepsides RULE
Join Date: Jul 2004
Location: Pineville, LA
Posts: 1,921
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what about just a straight up swap? im replacing my OE 2 barrel on my 305 with another 2 barrel 305 replacement, probably a Champion. How hard is it to do this?
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1981 Chevy C10 Custom Deluxe Stepside 350 V8, headers, side exhausts, 3-speed auto SOLD 1980 Chevy C10 Custum Deluxe Stepside 305 V8, Edelbrock Performer Intake, Edelbrock 1406 600CFM 4-barrel, TH350C. Bent rod. SOLD 1984 GMC Sierra Classic Longbed 6.2L Diesel SOLD 2009 Kawasaki KLX-250S too many mods for this signature 1999 Honda Accord EX 4-cylinder, 17" Motegi Wheels 215/45/17 Sumitomo tires, Tein S-Tech lowering springs, KYB GR2 shocks, Acura TL 20mm rear swaybar, debadged, blackhoused headlights, Short-Ram Intake Cardomain of the Accord |
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