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Getting 2 Edelbrck carbs=1 Dominator for NSS HELP......
#171305
12/20/08 09:33 AM
12/20/08 09:33 AM
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Joined: Jan 2003
Posts: 4,852
KENTUCKY
69CHARGERMD
OP
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OP
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Joined: Jan 2003
Posts: 4,852
KENTUCKY
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I need some suggestions on what type of intake and carb(s) to run.  This is for the 65' Belvedere,,, I want to "think" about running in the NSS stuff....or at least have the ability to comply with the rules,,,, The only major thing for me/the car is the carb issues,,,  Right now i have a Dominator,,,the car has Edelbrock heads,,,  The best ET on the car is a 10.26 @ 130MPH,with the dominator,,,not sure there is much more in the car as it sits,,,other than shedding some weight for ET...  QUESTION What intake and carbs would you recomend for NSS for my car? Will it slow down much or at all,,,compared to the dominator ? I have a 800 Thunder series Edelbrock carb,,,sitting on the shelf ( should i run 2 of those,,,or am i going to have to down size to 2 smaller carbs ? ),,,i dont know what the NSS guys typically run,,,so need a little help there... Is there someone that can "trick" out the carbs to make them work alot better,,,,eg prosystems,,quickfuel,,etc... Thanks for any suggestions.....  I am planning on running DUAL carbs,,,,,  Is there an advantage to running a IN LINE vs CROSS RAM intake ?,,,,, Doug  I attached a copy of the NSS rules,,,carb section...  Quote:
1.19 CARBURETOR
CARBURETOR (NSS CLASSES): All entries in the eliminator must be carbureted as outlined below. Carburetors must be of type and design as originally produced for a specific vehicle. Positioning of carburetors from factory mounting not a tech item (carburetors may be positioned facing forwards, backwards, or side mounted). Choke plate, choke shaft, choke linkage, and choke mechanism may be removed; choke horn removal permitted. The following carburetor combinations are allowed, regardless of year/make/model of entry:
•Buick 400-455; Single Carter, AFB, Edelbrock or Q-Jet, inline 2x4 with Carters, AFBs or Edelbrocks.
•Chevy 348-409; Inline 2x4, inline 3x2 with Rochesters or single 4bbl with Carters, AFBs, Edelbrocks or Rochesters.
•Chevy 396-454; Single 4bbl with Rochester, Carter,AFB, Edelbrock or Holley, Inline 2x4 with Carters, AFBs, Edelbrocks or Holleys, Inline 3x2 Holleys.
•Chrysler Hemi; Inline 2x4 or single 4bbl intake with Carters, AFBs, Edelbrocks, Holleys; or cross-ram 2x4 intake with Holleys.
•Chrysler Wedge; Inline or cross-ram 2x4 or single 4bbl intake with Carters, AFBs, or Edelbrocks.
•Ford; Inline 2x4 intakes, inline 3x2, or single 4bbl with Holleys.
•Pontiac; Inline 2x4 intakes or single 4bbl with Carters, AFBs, or Edelbrocks; or inline 3x2 with Rochesters.
•AMX 390—Cross ram 2x4 bbl intakes with Holleys.
•Olds 400-455; 1x4 Q-Jet, inline with 3x2 Rochesters.
CARBURETOR (F/X CLASSES): Vehicles in these classes permitted the use of carburetors listed for NSS, or Holley up to 850 cfm in size (no Dominators).
Multiple Carburetion Preferred
Racers with current legal National Muscle Car Association and Monster Mopar Dave Duell Classic single 4-bbl carburetor/intake manifold/vehicle combinations are encouraged to change to multiple carburetion. Racers with combinations currently under construction are also encouraged to use multiple carburetion.
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Re: Getting 2 Edelbrck carbs=1 Dominator for NSS HELP......
[Re: 69CHARGERMD]
#171306
12/20/08 11:37 AM
12/20/08 11:37 AM
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Joined: Jan 2005
Posts: 12,492
Kalispell Mt.
HotRodDave
I Live Here
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I Live Here
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Posts: 12,492
Kalispell Mt.
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I too would like to know about makeing the AVS carbs work.
The only way I can think of the inline carbs would be better is if you had them very tall to get longer runners and a big plenum, or if you could run an IR manifold but I don't think an AVS would work very good that way because the primaries and secondaries are not exactly the same. A holley with 4 identicle venturies would be needed and they would have to be huge like probably the biggest dominators you could find. Each venturi needs to flow about as much as the port in the head, for example if your heads flow 300 cfm you would need 2 1200CFM carbs. Motor cycle carbs are desighned like that so they can idle smooth as glass at 1000 rpm but pull like crazy at 15,000 rpm, a plenum make a small carb seem bigger but it will ruin the idle also.
If it was me I would run a cross ram with two AVS carbs and probably get some super stock hemi gu-ru to go through them. If you are running a wedge that looks like the best option.
I am not causing global warming, I am just trying to hold off a impending Ice Age!
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Re: Getting 2 Edelbrck carbs=1 Dominator for NSS HELP......
[Re: HotRodDave]
#171307
12/20/08 12:13 PM
12/20/08 12:13 PM
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Joined: Jan 2003
Posts: 3,513
DFW
mr_340
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DFW
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Most of the guys around Texas seem to run the Indy "crossram" intake, although the two AFBs are almost inline. This is both the Hemi version as well as the wedge (440-25). There was a guy from Division 1 running the Indy crossram (426-8) on his SS/E RO Plymouth and he set a record with that car, so the Hemi intake must work pretty well. I'd get another 800 AVS since you already have one. I think most of the guys are using the AFB version, but I haven't looked that close at the carbs. Chuck Beach runs an AVS on his 340 Stocker and supposedly makes his own accerator pump piston to make it launch. That may be something to play with?
Floyd Lippencott IV
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Post deleted by Defbob
[Re: Greg]
#171310
12/20/08 12:35 PM
12/20/08 12:35 PM
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Anonymous
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Anonymous
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Re: Getting 2 Edelbrck carbs=1 Dominator for NSS HELP......
[Re: Mike Miller]
#171312
12/20/08 01:06 PM
12/20/08 01:06 PM
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Joined: Jan 2003
Posts: 3,513
DFW
mr_340
master
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master
Joined: Jan 2003
Posts: 3,513
DFW
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Quote:
AVS carbs are not legal in most NSS organizations.
"•Chrysler Hemi; Inline 2x4 or single 4bbl intake with Carters, AFBs, Edelbrocks, Holleys; or cross-ram 2x4 intake with Holleys.
•Chrysler Wedge; Inline or cross-ram 2x4 or single 4bbl intake with Carters, AFBs, or Edelbrocks."
I don't see anything restricting him to an AFB style carb. Maybe that was their intention to limit it to AFBs, but that is not the way I interpret the rules. It looks like any Edelbrock carb would be legal, including the QJ carb. For that matter, it looks to me any Carter carb would be legal including the TQ. Showing up with a pair of 1000cfm CS TQ carbs might cause a bit of a stir? 
Floyd Lippencott IV
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Re: Getting 2 Edelbrck carbs=1 Dominator for NSS HELP......
[Re: Mike Miller]
#171314
12/20/08 01:31 PM
12/20/08 01:31 PM
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Joined: Jan 2003
Posts: 3,513
DFW
mr_340
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master
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Posts: 3,513
DFW
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Mike, I'm just pointing out a loophole in their rules. I think they should be more specific and remove the comma between Carter and AFB if they mean to run a Carter AFB. Also, in looking at it, it appears to me that a Dominator would be legal in NSS but not in FX classes. If there is a loophole, someone will find it and exploit it.
I agree with the spirit of NSS, it should be limited to what was available at the time. To me that would mean they should get rid of the stupid looking 5"-6" tall MW and Hemi scoops. They don't look period correct to me. There was an AFX Hemi scoop that was taller in the front that would be period correct.
Floyd Lippencott IV
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Re: Getting 2 Edelbrck carbs=1 Dominator for NSS HELP......
[Re: mr_340]
#171315
12/20/08 01:47 PM
12/20/08 01:47 PM
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Anonymous
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Anonymous
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yes, damon makes a very good carb  But if I recall right you Know Gary Jacob?... He is also very knowledgable about these carbs. I dont know if you are building a bigger motor or not, but I would reccomend some 750's AFB but if you build a bigger motor then go ahead and get the 800's On the intake I would go with an INDY crossram, but make sure you put some sort of burst panel on it. Ps... glad to see you getting into NSS Casey 
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Re: Getting 2 Edelbrck carbs=1 Dominator for NSS HELP......
[Re: 69CHARGERMD]
#171316
12/20/08 01:53 PM
12/20/08 01:53 PM
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Joined: Aug 2003
Posts: 43,902
Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,902
Bend,OR USA
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If your running a wedge with standard 440 size intake ports, which I'm assuming you are, use the inline eddy two four intake and hook the carb linkage up one ot one. Plan on trying several different thickness(1/2, one inch and maybe 1.5 and two inch thick to find what the motor wants as far as carb spacer under the carbs at the track. Tuned properly that combo should run as good or faster than the single Dominator. If your using a set of wedge heads with M.W. ports use the Indy bathtub intake with the inline two four top, offset or not depending on what you want. If the AVS carbs are not legal get a set of Carter competition sereis 750 CFM or a set of non smog Eddy 750 cfm carbs and jet them as needed
Last edited by Cab_Burge; 12/21/08 12:34 AM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: Getting 2 Edelbrck carbs=1 Dominator for NSS HELP......
[Re: nss guy]
#171320
12/20/08 09:18 PM
12/20/08 09:18 PM
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Anonymous
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Anonymous
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I would recomend to replace the stock needle and seats with the larger ones. I am tapping the other side as well to make them dual lines..If you use a Indy 440-25 I would get a pop off valve for it..I have seen a lot of them topless...
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Re: Getting 2 Edelbrck carbs=1 Dominator for NSS HELP......
[Re: 69CHARGERMD]
#171322
12/20/08 10:37 PM
12/20/08 10:37 PM
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Anonymous
Unregistered
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Anonymous
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Indy intake is max wedge port size...
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Re: Getting 2 Edelbrck carbs=1 Dominator for NSS HELP......
#171323
12/21/08 05:45 AM
12/21/08 05:45 AM
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Joined: Jan 2003
Posts: 4,852
KENTUCKY
69CHARGERMD
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Posts: 4,852
KENTUCKY
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Thanks for the replys guys,,,,this is the info i needed. Looks like i will have to find the intake that i can use ( with the E heads),,,and go from there,,,like mentioned above. Sounds like the INDY intake is not an option. Right now,,the car is a 440,,nothing fancy,,,eventually i will do a 572,,but that is a few years out,,,,so i might focus on what i have and build the NSS stuff accordingly,,,(unless i can convince Casey to let me "borrow" his motor  ) thanks again for all the advice,,,,
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Re: Getting 2 Edelbrck carbs=1 Dominator for NSS HELP......
[Re: 69CHARGERMD]
#171324
12/21/08 08:30 AM
12/21/08 08:30 AM
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Joined: Mar 2006
Posts: 10,047
MI, usa
dvw
I Live Here
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I Live Here
Joined: Mar 2006
Posts: 10,047
MI, usa
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The Eddy heads can be opened up to max wedge. There is a 63 Dodge the runs this set-up in the Detroit area with the Indy manifold. Full interior, saw it driving down Woodward during the dream cruise. It runs as I remember 10.30 thru the mufflers. I've talked to Jake, he's found any of the AFB style carbs work about the same. Also the NSS car he drives dynoed better w/2 AFB carbs than w/2 Holleys. It ran quicker also. I believe its gone [Email]9.05@148.[/Email] As for the burst panels in the intake. I had one of the 1st Indy manifolds . I was told to always start the motor with the throttle blades wide open. That way if it coughs there's an opening for the pressure. It seems wierd at first until you get the hang of it. Then it will start smoothly w/o revving high.
Doug
Last edited by dvw; 12/21/08 08:32 AM.
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