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08-04-2003, 07:29 PM
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Senior Club Cobra Member
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Join Date: Mar 2002
Location: Kennesaw,
Ga
Cobra Make, Engine: Old car with 6 banger
Posts: 261
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Not Ranked
Any Holley Carb Experts in Atl
Anyone know a good holley carb expert in North Atlanta area? My car idles good and runs fine as long as I stay out of the secondaries. As soon as I hit em it runs rough, won't idle, and blows black smoke. Seems like it is flooding. Float adjustment or jetting possibly?
What I would like to do is give a carb shop the specs to my engine, and have them jet it correctly.
DC
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08-05-2003, 02:30 AM
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CC Member
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Join Date: Apr 2002
Location: Alpharetta,
GA
Cobra Make, Engine: Sold - Unique FIA - SA 396 Stroker
Posts: 2,440
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Not Ranked
Dave try starting here http://www.bob2000.com/carb.htm This will get you started, if that doesn't help you should try one of the chassis dyno shops in Marietta. They can get it dead on for about $150 or less. I'm going to take mine over after I get some more miles on ot.
Randy
__________________
Sold the Unique - Bought a Porsche TT - Sold the TT - Bought a truck
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08-05-2003, 03:23 AM
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CC Member
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Join Date: Aug 2002
Location: Dacula, (Atlanta),
GA
Cobra Make, Engine: Unique 427 SC, Southern Automotive 427W Stroker
Posts: 1,649
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Not Ranked
You guys are convincing me that I need to go with the Edelbrock or Demon. Clyde was having problems with his Holley as well. Are ya'll all running vacuum secondaries?
__________________
After a good hard ride.....oil pressure is over 50, temp is below 190, she idles and no new dents. LIFE IS GOOD!
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08-05-2003, 03:28 AM
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CC Member
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Join Date: Apr 2002
Location: Alpharetta,
GA
Cobra Make, Engine: Sold - Unique FIA - SA 396 Stroker
Posts: 2,440
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Not Ranked
Tony my holly is working great. No stumbles just acceleration. I want to do the dyno trip just to optimize. What are you doing up so early ?
Randy
__________________
Sold the Unique - Bought a Porsche TT - Sold the TT - Bought a truck
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08-05-2003, 05:41 AM
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Senior Club Cobra Member
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Join Date: Mar 2002
Location: Kennesaw,
Ga
Cobra Make, Engine: Old car with 6 banger
Posts: 261
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Not Ranked
Thanks for the link Randy,
Shouldn't you be bidding a job or something 
I do plan on running on a dyno, but I need some more breakin miles first.
Tony, I am running a holley carb that originally came with my 427. It was rebuilt and never installed on the old engine. It does have vacuum secondaries. |
08-05-2003, 05:46 AM
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CC Member/Contributor
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Join Date: Feb 2000
Location: Greenville,
SC
Cobra Make, Engine: 70 Shelby convertible, ERA-289 FIA, 65 Sunbeam Tiger, mystery Ford powered 2dr convertible
Posts: 12,685
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Not Ranked
What you need is a 650DP for your engine...Holley part # 04777C, jet down two sizes in the front, and two in the rear, add a Moroso 1:1 linkage kit, set your floats, and you'll be good to go..........Stay away from the Edelbrock unit if your looking for performance, as this is usually for the plug and play street rodder crowd......If your going to run a Demon, make sure you get one of the newest next generation units, as the older units were prone to fuel delivery problems...................
Bill S.
__________________
Instead of being part of the problem, be part of a successful solution.
First time Cobra buyers-READ THIS
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08-05-2003, 08:14 AM
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CC Member
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Join Date: Jul 2001
Location: Senoia,
Ga.
Cobra Make, Engine: 427SO with big twin autolite inlines on custom intake, jag rear, top loader, wembeldon white, guardsmen blue stripes
Posts: 3,155
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Not Ranked
Don't know your engine specs. but, adjust your power valve to your vacuum
and get the quick change vacuum secondary kit with springs. Play with the jets and springs until it feels gooooooood.......
__________________
Perry
Remember!, there's a huge difference between a 'parts' changer, and a mechanic.
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08-05-2003, 09:30 AM
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CC Member
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Join Date: Jul 2001
Location: Senoia,
Ga.
Cobra Make, Engine: 427SO with big twin autolite inlines on custom intake, jag rear, top loader, wembeldon white, guardsmen blue stripes
Posts: 3,155
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Not Ranked
__________________
Perry
Remember!, there's a huge difference between a 'parts' changer, and a mechanic.
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08-05-2003, 09:58 AM
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CC Member
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Join Date: Aug 2002
Location: Dacula, (Atlanta),
GA
Cobra Make, Engine: Unique 427 SC, Southern Automotive 427W Stroker
Posts: 1,649
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Not Ranked
Bill, someone on a previous post also running a SB stroker has been swapping out carbs between Holley, Edelbrock and Demon. According to him, the Edelbrock 1407 gave him the best performance of the three. Isn't a 650 CFM kind of small for a 427 CI engine?
Randy, I always wake up early due to Cobra Pre-stroker Syndrome (CPS). By the way, where are we going this weekend? Looks like the weather might be cooperative.
Dave, how are those back tires looking? Still loving the solid cam?
__________________
After a good hard ride.....oil pressure is over 50, temp is below 190, she idles and no new dents. LIFE IS GOOD!
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08-05-2003, 04:07 PM
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CC Member
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Join Date: Aug 2002
Location: Atlanta,
GA
Cobra Make, Engine: SPF #821,Southern Automotive 427 Side Oiler w/2x4
Posts: 687
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Not Ranked
Where is there a dyno place in Marrietta. I don't think the secondaries on my 2x4s open and you can't tell without a load on the engine.
__________________
Alex
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08-05-2003, 04:14 PM
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CC Member
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Join Date: Apr 2002
Location: Alpharetta,
GA
Cobra Make, Engine: Sold - Unique FIA - SA 396 Stroker
Posts: 2,440
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Not Ranked
Alex I have the names at the office. I'll post them Wednesday. Another option is give me your car for a week and I'll check it out 
If everyone will get together and pick a date we can schedule a club event one Sat.
Randy
__________________
Sold the Unique - Bought a Porsche TT - Sold the TT - Bought a truck
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