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Demon carbs
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squeeezer
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Joined: 02 Mar 2007
Posts: 2427
Location: new richmond WI
191524.76 points


1991 Chevrolet Camaro

PostPosted: Fri Feb 13, 2009 7:37 pm    Post subject: Reply with quote

i put a brand new shinny demon carb on my 406 (with clown smile i may add) brought it down to the dyno and it cost me$$$$$$ the float/needle n seat were swedged into the closed position

first run was primarries only Embarassed Embarassed Embarassed

found the problem right away but still $$$$$$

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sourshop
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Joined: 04 Sep 2008
Posts: 70

2487.18 points


1964 Chevrolet Impala

PostPosted: Fri Feb 13, 2009 7:49 pm    Post subject: Reply with quote

I certainly hope that they've made all the necessary improvements over time. Other wise I have no intention of buying one.
My friend has an early model and the float sticks all the time. Very frustrating.

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lun40119
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Joined: 22 Oct 2008
Posts: 624
Location: Wisconsin
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1967 Chevrolet Chevelle

PostPosted: Sun Feb 15, 2009 1:05 am    Post subject: Reply with quote

Not trying to advertise or anything like that, but on this new engine, I will be purchasing a carb from Patrick at ProSystems. From what I hear, great products, tailored to what you are running, and excellent customer service. I run my stuff in on dynos, so I will know the BSFC numbers. I'll let you know what it is done.........should be about a month or so.
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sourshop
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Joined: 04 Sep 2008
Posts: 70

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1964 Chevrolet Impala

PostPosted: Sun Feb 15, 2009 12:26 pm    Post subject: Reply with quote

Oh yeah....what carb and style...if you don't mind sharing. And do you always go with the same make of carb?
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lun40119
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Joined: 22 Oct 2008
Posts: 624
Location: Wisconsin
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1967 Chevrolet Chevelle

PostPosted: Sun Feb 15, 2009 10:46 pm    Post subject: Reply with quote

He didn't really say what the CFM would be. He did say it would be a Holley HP type carb. Other than that I don't really know that much about them. I will be ordering it this wk. I picked up the new short block today.
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bosshoss
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Joined: 08 Dec 2007
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PostPosted: Mon Feb 16, 2009 1:50 pm    Post subject: Reply with quote

There is a guy in Oregon.. His web site is 4secondsflat.com. Really sharp on the Demon carbs and has a bunch of useful tuning tips... reading plugs.. ect. worth a look. A friend bought his book.. tuning to win and got a bunch of useful info from it.
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sourshop
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Joined: 04 Sep 2008
Posts: 70

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1964 Chevrolet Impala

PostPosted: Mon Feb 16, 2009 4:25 pm    Post subject: Reply with quote

lun40119 wrote:
He didn't really say what the CFM would be. He did say it would be a Holley HP type carb. Other than that I don't really know that much about them. I will be ordering it this wk. I picked up the new short block today.

I love new toys! Smile

Thanks for the info bosshoss. I'm always in the mood for new books.

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lun40119
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Joined: 22 Oct 2008
Posts: 624
Location: Wisconsin
4740.92 points


1967 Chevrolet Chevelle

PostPosted: Mon Feb 16, 2009 11:38 pm    Post subject: Reply with quote

sourshop wrote:
lun40119 wrote:
He didn't really say what the CFM would be. He did say it would be a Holley HP type carb. Other than that I don't really know that much about them. I will be ordering it this wk. I picked up the new short block today.

I love new toys! Smile

Thanks for the info bosshoss. I'm always in the mood for new books.


I like it alot Very Happy Very Happy Very Happy






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Jake

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sourshop
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Joined: 04 Sep 2008
Posts: 70

2487.18 points


1964 Chevrolet Impala

PostPosted: Tue Feb 17, 2009 2:21 pm    Post subject: Reply with quote

OH GEEZ!!! Caught myself drooling again. Hate when that happens. lol
Looking at fresh engines never gets old.

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dezl
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Joined: 20 May 2009
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Location: Napa
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PostPosted: Wed May 27, 2009 1:32 pm    Post subject: Reply with quote

lun40119 wrote:
He didn't really say what the CFM would be. He did say it would be a Holley HP type carb. Other than that I don't really know that much about them. I will be ordering it this wk. I picked up the new short block today.


haha, I dont mean to be a jerk but its kind of strange that you call out a guy who throws a new carb on to get a baseline and then tunes his engine. All in the mean while you just buy parts and know nothing about them.....

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1969 Chevelle, BB 427, th400
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lun40119
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Joined: 22 Oct 2008
Posts: 624
Location: Wisconsin
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1967 Chevrolet Chevelle

PostPosted: Wed May 27, 2009 3:02 pm    Post subject: Reply with quote

Call Patrick from Prosystems. When you get a carb from him he gives you an estimate on what the flow will be, but you don't actually know until you get the build sheet with the wet flow analysis. Sorry to mislead you.
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Jake

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lun40119
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Joined: 22 Oct 2008
Posts: 624
Location: Wisconsin
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1967 Chevrolet Chevelle

PostPosted: Wed May 27, 2009 3:05 pm    Post subject: Reply with quote

Oh yeah, I did take it apart and clean it even though it was brand new. It also said to do that and make sure all screws and such were tight before running.
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squeeezer
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Joined: 02 Mar 2007
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Location: new richmond WI
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1991 Chevrolet Camaro

PostPosted: Wed May 27, 2009 7:10 pm    Post subject: Reply with quote

lun40119 wrote:
Oh yeah, I did take it apart and clean it even though it was brand new. It also said to do that and make sure all screws and such were tight before running.





just like a woman.......cant just marry them right outa the box

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coppergmc
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Joined: 19 Dec 2005
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PostPosted: Wed May 27, 2009 7:16 pm    Post subject: Reply with quote

A lot of women do have loose screws. So you have to check them very carefully.
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squeeezer
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Joined: 02 Mar 2007
Posts: 2427
Location: new richmond WI
191524.76 points


1991 Chevrolet Camaro

PostPosted: Wed May 27, 2009 7:25 pm    Post subject: Reply with quote

coppergmc wrote:
A lot of women do have loose screws. So you have to check them very carefully.




yup along with other loose parts Laughing

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