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11-19-2003, 05:54 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
Put the Demon on today!
Hey Tony,
Finally got the mighty demon on today. Man I didn't know this 427 stroker could run so good. This was the first time I actually got it in the secondaries. All you have to do is touch the key and it starts and idles like it is supposed to. Its probably a good thing I had the holley during breakin, it kept me from going over 4,000 rpm. I'm sold on the Barry Grant carb.
Only problem is, with all the power, I found my clutch is slipping in 3rd and 4th
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11-19-2003, 06:31 PM
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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
Dave, are you sure it's the clutch and not the tires? Lately, everytime I come to a stop, I smell burning rubber. I might as well start identifying my next set of tiires. Great news on the new BG. Chill got him one as well and is experiencing similar results. Hope you can make Sunday.
__________________
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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11-19-2003, 08:41 PM
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Senior Club Cobra Member
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Join Date: Jun 2001
Location: North Metro Atlanta,
GA
Cobra Make, Engine: 2 dr roadster, V-8, 4 spd.
Posts: 2,780
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Not Ranked
David, 1st off congrats. 2ndly, we need to start planning for accomodations for the Willis if you wanted the families to do something. 3rdly, why do you think it is the clutch that is slipping?
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11-20-2003, 05:12 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
TC,
We do need to get together on accomodations. I'm just waiting to see if my daughter and her friend are going so I'll know what we will need.
I'm sure the clutch is slipping. In 4th gear at 1,000 rpm, if I hit the gas, it tachs up to about 3,000, then have to back off to let it grab. I'm pretty sure I would know if the tires were spinning because these hoosiers hook up really well. I have not been able to run the car hard until yesterday, so I wasn't aware of the clutch problem.
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11-20-2003, 06:11 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 sounds like I need to get my holley right or make the switch. I had a terrible fuel starvation problem when we had the drag event. The car nearly stopped as soon as I got in 3rd gear. It took a good 1 to 1 1/2 seconds to come back and when it did I had wheel spin like crazy, I thought it was the clutch slipping.
Randy
I sure would like to get on board for the Willis, what do I need to do? Send Johan flowers or something.
__________________
Sold the Unique - Bought a Porsche TT - Sold the TT - Bought a truck
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11-20-2003, 07:47 AM
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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
I had Bill change out the single 4 Holly for 2 4's as most of you guys know. I don;\'t think it has ever run as well as the single. And if a demon is even better maybe I ought to switch and hang the duals on the wall for nostalgia purposes
TC I sent you email yesterday and need to firm up trip please call see email
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Alex
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11-20-2003, 08:08 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
Alex, go for the best of all worlds, TWO BARRY GRANTS!
__________________
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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11-20-2003, 08:20 AM
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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
Wher do you get them?? They fit on a holly intake??
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Alex
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11-20-2003, 09:25 AM
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CC Member
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Join Date: Apr 2002
Location: Klamath Falls,
Or
Cobra Make, Engine: shell valley
Posts: 246
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Not Ranked
Dave I too am thinking about the Mighty Demon had herd when you order one they tailor it to your motor ( on CC I belive) can't belive that is the case from a mail house have been looking at Summit for $500.00
Ken
__________________
Talent is your head in communication with your balls.
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11-20-2003, 09:39 AM
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CC Member
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Join Date: Mar 2002
Location: so cal,
Cal
Cobra Make, Engine: I used to fix them for a living
Posts: 2,563
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Not Ranked
Quote:
Originally posted by GeorgiaSnake
Dave sounds like I need to get my holley right or make the switch. I had a terrible fuel starvation problem when we had the drag event. The car nearly stopped as soon as I got in 3rd gear. It took a good 1 to 1 1/2 seconds to come back and when it did I had wheel spin like crazy, I thought it was the clutch slipping.
Randy
I sure would like to get on board for the Willis, what do I need to do? Send Johan flowers or something.
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changing carbs will not solve your fuel delivery (to the carb)problems. Buying a new carb is an expensive way to do a carb adjustement.
__________________
In a fit of 16 year old genius, I looked down through the carb while cranking it to see if fuel was flowing, and it was. Flowing straight up in a vapor cloud, around my head, on fire.
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11-20-2003, 09:45 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
Quote:
Originally posted by Mr.Fixit
changing carbs will not solve your fuel delivery (to the carb)problems. Buying a new carb is an expensive way to do a carb adjustement.
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Thanks for the sanity check fixit. From what I have been told my primary jets are way big, black smoke on launch. Most likely sucking the bowls dry hence no fuel buy the time I got to 3rd.
I was told to drop to 70's or possibly 68's on the primaries and 40 to 45 for the power valve. I have a mecahnical fuel pump (carter high volumn) and a new filter.
Randy
__________________
Sold the Unique - Bought a Porsche TT - Sold the TT - Bought a truck
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11-20-2003, 10:08 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
Alex, call Barry Grant's tech line (706)864-8544 and tell them exactly what you have including: Cam profile, CID, intake manifold, transmission type, rear end gear ratio and they will identify the carb type and configuration. They will give you a config code that you can give Bill or anyone else who sells BG. BG doesn't do retail. I gave Lewis the config code and Bill bought it as part of my engine build.
__________________
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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11-20-2003, 10:11 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
Second part of your question, yes they fit the Holley mounting profile. Barry Grant used to work for Holley and spun off to do his own thing. Supposedly, they improved upon the Holley design in a number of ways. If you go to their website, they go into considerable detail about their carbs. I spent quite a bit of time there while making up my mind which way to go. I'm very glad I went with BG.
__________________
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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11-20-2003, 11:03 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
Quote:
Originally posted by Mr.Fixit
changing carbs will not solve your fuel delivery (to the carb)problems. Buying a new carb is an expensive way to do a carb adjustement.
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Maybe so, but I called Barry Grant and gave them my engine specs, and they made a carb for My engine. Out of the box it worked better than 2 months of tinkering with the holley. Can you call holley and get them to tell you what jets to run? Also, I wanted the instant gratification of mechanical secondaries. When I want power, I want it right now. If my holley had mechanical secondaries, I probably would have tinkered a while longer.
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11-20-2003, 11:08 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
Quote:
Originally posted by GeorgiaSnake
I sure would like to get on board for the Willis, what do I need to do? Send Johan flowers or something. [/b]
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An ice cold budwieser or two would probably do the trick. Or better yet offer to move his car(s) around at the track so some dumba$$ doesn't hit the fire suppression system might work too
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11-20-2003, 02:10 PM
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CC Member
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Join Date: Mar 2002
Location: so cal,
Cal
Cobra Make, Engine: I used to fix them for a living
Posts: 2,563
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Not Ranked
Quote:
Originally posted by Dave Crace
Maybe so, but I called Barry Grant and gave them my engine specs, and they made a carb for My engine. Out of the box it worked better than 2 months of tinkering with the holley. Can you call holley and get them to tell you what jets to run? Also, I wanted the instant gratification of mechanical secondaries. When I want power, I want it right now. If my holley had mechanical secondaries, I probably would have tinkered a while longer.
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Holley doesn't do high perf Holley's. You have to go with one of the many carb guys to get that kind of support. BG made his niche by doing Holley Carbs for a long time, then copied the design. Then Holley made him change a few things, and he now sells the demon. If anyone is interested, I know where there is a brand new first generation BG carb 750 DP for sale. A frend bought it, couldn't get it to work right, I got tired of screwing with it, so I loaned him a Holley that I knew worked good. It's pretty with billet parts and all.
__________________
In a fit of 16 year old genius, I looked down through the carb while cranking it to see if fuel was flowing, and it was. Flowing straight up in a vapor cloud, around my head, on fire.
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11-20-2003, 03:26 PM
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CC Member
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Join Date: Mar 2003
Cobra Make, Engine:
Posts: 1,514
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Not Ranked
Mr. Fixit, I've seen your posts before regarding the BG lines and personally I could care less what other people use but the truth is from where I sit is that Holley is losing some business by not matching the service/customization that BG offers internally. Secondly, the only poor review/experience I've ever read and heard has been your own regarding that 750 dp. Could it be, even possibly your friend got a faulty unit because I've had nothing but a terrific experience. In fact, we now have at least 5 to 6 conversions in the last 8 months to the BG's in the local Cobra group alone.
BTW, my BG was further customized while on the dyno to match the engine further. Any off the shelf carb would need the same but talent is required to further hone in on each combination. I always enjoy and learn from your posts so please continue.
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11-20-2003, 04:02 PM
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CC Member
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Join Date: May 2002
Location: Haslet,
TX
Cobra Make, Engine: former Unique289
Posts: 784
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Not Ranked
1 more vote for the Demon. I faxed BG the build sheet from Southern, they gave me the carb model #, picked it up from Garry Grimes and an hour later the car ran like I always figured it was supposed to.
Holley is generally well respected, for what its made for, and can be made to run well with some attention....but it can't compare to a custom carb, especially not right out of the box... and I don't see many engines among the posts here that aren't highly modified....being driven around in light cars... by heavy feet
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chill
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11-20-2003, 04:27 PM
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CC Member
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Join Date: Dec 2000
Location: Los Angeles,
CA
Cobra Make, Engine: E.R.A. FIA #2088 1964 289 w/Webers
Posts: 2,151
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Not Ranked
I'm a little late on this thread but just wanted to mention that Demon makes a great carb. I would say better than a standard Holley. If you think you are having problems with your holley & you are trying to justify a change because of it I might tend to try to convince you to fix your problem & save a few bucks unless the Demon is what you really want & somehow adds to the appeal of your car. Chances are the problem you have could still exist when you bolt up your brand new $500+/- Demon. In all reality a Demon is just a slightly more efficient Holley.
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Hyde D. Baker
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11-20-2003, 07:51 PM
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CC Member
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Join Date: Dec 2002
Location: S.F.,
CA
Cobra Make, Engine: SPF 1474: 482 CI stroked tunnel port 427 with dual quads.
Posts: 237
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Not Ranked
Tony,
You mean something like this???????
Pair of road demon jr.'s 725 cfm each. The motor isn't finished, but I like what I see posted here. I hope the demon carbs do the trick!
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"Some things just get meaner as they get older"
.....Gumball Rally :-)
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