Racing w/dual quad - A NSS
#1791206
03/29/15 03:50 PM
03/29/15 03:50 PM
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Joined: Nov 2005
Posts: 690 New Hampshire, USA
oldiron
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mopar
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OP
mopar
Joined: Nov 2005
Posts: 690
New Hampshire, USA
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I'm setting the car up to be able to run NMCA rules. My goal is A NSS so I'm going dual Edelbrock performer carbs & indy modman. I'm figuring on shifting at about 7K, not launching on a 2 step, & launching at 5 to 5500. I haven't played with an ebrock carb in a bunch of years, & thinking 2 600s This is a 470 w/SRs, 456 gears, 3.08 1st gear So am I opening a bad can of worms? 600s ok? anything to be done as far as playing with the counterweights on the secondary air door? (It looks like no AVS for my car, but not sure)
66 Belvedere Vert, 4 Speed/Jerico, slowly, very slowly, getting faster - NA LD Wedge New New Best: 10.56 @129 68 B'cuda 4 gear Jerico - Another New Best of 9.86 & Trying to slow up https://www.youtube.com/watch?v=T4jDLKwd9Gs
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Re: Racing w/dual quad - A NSS
[Re: dvw]
#1791208
03/29/15 04:26 PM
03/29/15 04:26 PM
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Joined: Nov 2005
Posts: 690 New Hampshire, USA
oldiron
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Thanks Doug, W/r to the 2 step. I've been gun shy since I had a switch fail and launched at 7500. I was planning on bringing it up to where the 2 step just starts acting and then backing off. Thinking this will give some pump shot left. I'll probably work my courage up again and give it a try w/pedal to the floor. Thanks again Greg
66 Belvedere Vert, 4 Speed/Jerico, slowly, very slowly, getting faster - NA LD Wedge New New Best: 10.56 @129 68 B'cuda 4 gear Jerico - Another New Best of 9.86 & Trying to slow up https://www.youtube.com/watch?v=T4jDLKwd9Gs
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Re: Racing w/dual quad - A NSS
[Re: 66coronet]
#1791210
03/30/15 09:40 PM
03/30/15 09:40 PM
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Joined: Nov 2005
Posts: 690 New Hampshire, USA
oldiron
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68 barracuda, 3200 to 3250 depending on the day on new england dragway scales, solid roller, .646 lift, 11 to 1, MW port SR heads by Dwayne. 470ci It will typically run 9.90 to 95 at new england until the temp gets over 85 then will be up to 10.0 to 10.05 w/1050 4150 version. This is with no tuning for weather. Planning on raising the compression ratio, not too much left in the heads, will be a cam change. Going for 9.80s when hot.
I'm planning on testing the modman and edelbrocks with no other changes to see the effect from just those.
Did you ever try a before and after with the modman?
Thanks
66 Belvedere Vert, 4 Speed/Jerico, slowly, very slowly, getting faster - NA LD Wedge New New Best: 10.56 @129 68 B'cuda 4 gear Jerico - Another New Best of 9.86 & Trying to slow up https://www.youtube.com/watch?v=T4jDLKwd9Gs
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Re: Racing w/dual quad - A NSS
[Re: 66coronet]
#1791216
03/31/15 02:09 PM
03/31/15 02:09 PM
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Joined: Sep 2007
Posts: 145 NJ
cb1289
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member
Joined: Sep 2007
Posts: 145
NJ
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Greg, My experience this past season has been similar to what dvw stated about the transition off idle to wot. It works but could be more responsive at the hit. Overall it still was consistent & reliable, but not as good as a holly. This is with 2 eddy 750cfm afb, mod man,493 rb,3700lb auto.Don't know how it would act with your stick shift combo. Steve
PS- I think the mod man is a good compromise manifold for performance & fitting under a stock hood. Went 10.70's & 80's with a ch-28 & 500cfm afb's 2 seasons ago & 10.40's & 50's last season with the mod man & 750's
Last edited by cb1289; 03/31/15 02:27 PM.
62 Dodge Dart Wagon
65 Plymouth Satellite
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Re: Racing w/dual quad - A NSS
[Re: cb1289]
#1791220
03/31/15 11:05 PM
03/31/15 11:05 PM
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Joined: Nov 2005
Posts: 690 New Hampshire, USA
oldiron
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Thanks Steve, good to know. Hood clearance is an issue. It will be interesting. I may have to leave with the pedal all the way down. This is going to be a learning process. There will be a bunch of clutch adjustments to get everything working.
Yes, AFBs it is for NSS. I didn't think I'd be able to run the 10.00 index with one. Maybe someone more clever than me could.
66 Belvedere Vert, 4 Speed/Jerico, slowly, very slowly, getting faster - NA LD Wedge New New Best: 10.56 @129 68 B'cuda 4 gear Jerico - Another New Best of 9.86 & Trying to slow up https://www.youtube.com/watch?v=T4jDLKwd9Gs
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Re: Racing w/dual quad - A NSS
[Re: biff426]
#1791223
04/01/15 08:33 PM
04/01/15 08:33 PM
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Joined: Nov 2005
Posts: 690 New Hampshire, USA
oldiron
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mopar
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OP
mopar
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Posts: 690
New Hampshire, USA
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I guess I'm not surprised that the rules aren't necessarily the rules, but the die is cast. 2 4bbls it is. Something new
66 Belvedere Vert, 4 Speed/Jerico, slowly, very slowly, getting faster - NA LD Wedge New New Best: 10.56 @129 68 B'cuda 4 gear Jerico - Another New Best of 9.86 & Trying to slow up https://www.youtube.com/watch?v=T4jDLKwd9Gs
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Re: Racing w/dual quad - A NSS
[Re: oldiron]
#1791224
04/01/15 09:31 PM
04/01/15 09:31 PM
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Joined: Mar 2006
Posts: 9,835 MI, usa
dvw
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master
Joined: Mar 2006
Posts: 9,835
MI, usa
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Two AFB's aren't nearly as bad as everyone thinks. My bet is 2 Eddys will run every bit as well as a single 4150 Holley. The tuning window has been a no brainer. My car has been 9.12@147.7 On box stock 750 Eddy's with the chokes removed and nothing but one step up in jets and a spring change. Doug
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Re: Racing w/dual quad - A NSS
[Re: dvw]
#1791225
04/04/15 11:15 AM
04/04/15 11:15 AM
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Joined: Jan 2003
Posts: 3,048 Richmond, Tx. (Houston)
GTSDave
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master
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Richmond, Tx. (Houston)
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oldiron,
I also run NSS, and use 2 of Damon's modified 800 Eddies on an Eddie STR-15 intake, with a Jerico. I launch on a 2 step at 5400. Combo is a 496" with INDY -1's. With screens it fits under the hood with the scoop.
Love my carbs. Engine is making more than enough steam for what I want to do with it. Last season was my first in a car this quick, and I was fighting 60' issues. Looking to keep it at a 10.0 this year and will have to slow it down.
-Dave
PLEASE Pray for our brothers and sisters in harms way. If you are the owner of a GTS us at the GTS Registry www.gtsregistry.com
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