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weak small block #1764253 02/27/15 02:13 PM 02/27/15 02:13 PM
Joined: Jun 2003 Posts: 9,225 Charleston S sixpackgut OP Drag Week Mod Champion
sixpackgut OP Drag Week Mod Champion S Joined: Jun 2003 Posts: 9,225 Charleston	On my Shaggin Wagon, I put a 4bbl intake and edelbrock 600 avs on it. I was doing some tuning yesterday and decided to drive it without the dog house or aircleaner on it. it wont even open the air door on the secondaries when floored. thinking about a 450 holley. Never tried one but they have just one squirter and open the secodaries mechanically. Any have any thoughts on this? Gen 3 power 6.22@110, 9.85@135 Follow @g3hemiswap on instagram performance only racing, CRT, ultimate converter, superior design concepts, ThumperCarbs

Re: weak small block [Re: sixpackgut] #1764254 02/27/15 02:17 PM 02/27/15 02:17 PM
Joined: Jul 2008 Posts: 361 Canada onig enthusiast
onig enthusiast Joined: Jul 2008 Posts: 361 Canada	It's been a long time, but I think the spring is adjustable on that. 69 Dart

Re: weak small block [Re: onig] #1764255 02/27/15 02:22 PM 02/27/15 02:22 PM
Joined: Jan 2003 Posts: 32,394 Q Quicktree I Win
Quicktree I Win Q Joined: Jan 2003 Posts: 32,394	put a dang 650 vac secondary holley and be done with it. will give your more performance and better mileage. you are way over thinking this

Re: weak small block [Re: sixpackgut] #1764256 02/27/15 02:34 PM 02/27/15 02:34 PM
Joined: Nov 2004 Posts: 6,890 North Alabama M Monte_Smith master
Monte_Smith master M Joined: Nov 2004 Posts: 6,890 North Alabama	It takes air speed to open the secondaries. Weak motors move no air, so all you have to do is use a weaker spring on the secondary doors. I wouldn't use the 450 Holley. The 650 Quick suggested will be fine. But same deal, you will have to tune the secondary with a weaker diaphragm Monte

Re: weak small block [Re: Monte_Smith] #1764257 02/27/15 02:40 PM 02/27/15 02:40 PM
Joined: Jun 2003 Posts: 9,225 Charleston S sixpackgut OP Drag Week Mod Champion
sixpackgut OP Drag Week Mod Champion S Joined: Jun 2003 Posts: 9,225 Charleston	but that is no different the the 600 Edel I already have on it. If it wont pull the seconday air flap open, and I think I have it as lose as it can be, why would you guys think the Holley secondaries will open? Gen 3 power 6.22@110, 9.85@135 Follow @g3hemiswap on instagram performance only racing, CRT, ultimate converter, superior design concepts, ThumperCarbs

Re: weak small block [Re: sixpackgut] #1764258 02/27/15 02:43 PM 02/27/15 02:43 PM
Joined: Jan 2003 Posts: 32,394 Q Quicktree I Win
Quicktree I Win Q Joined: Jan 2003 Posts: 32,394	Quote: but that is no different the the 600 Edel I already have on it. If it wont pull the seconday air flap open, and I think I have it as lose as it can be, why would you guys think the Holley secondaries will open? well for one i wouldn't put a eddy carb on anything they are both adjustable with springs. they wont open until needed. how long did you hold the pedal down? it wont open the second you mash the gas either way.

Re: weak small block [Re: Quicktree] #1764259 02/27/15 02:47 PM 02/27/15 02:47 PM
Joined: Jun 2003 Posts: 9,225 Charleston S sixpackgut OP Drag Week Mod Champion
sixpackgut OP Drag Week Mod Champion S Joined: Jun 2003 Posts: 9,225 Charleston	Quote: Quote: but that is no different the the 600 Edel I already have on it. If it wont pull the seconday air flap open, and I think I have it as lose as it can be, why would you guys think the Holley secondaries will open? well for one i wouldn't put a eddy carb on anything they are both adjustable with springs. they wont open until needed. how long did you hold the pedal down? it wont open the second you mash the gas either way. The Edel carbs work great. I know some people hate them but they really work very well. I was pushing the air door open with my finger Damn thing is so slow. I drive it every day but its just such a dog Gen 3 power 6.22@110, 9.85@135 Follow @g3hemiswap on instagram performance only racing, CRT, ultimate converter, superior design concepts, ThumperCarbs

Re: weak small block [Re: sixpackgut] #1764260 02/27/15 04:05 PM 02/27/15 04:05 PM
Joined: Jan 2003 Posts: 13,365 Marion, South Carolina [><] an8sec70cuda I Live Here
an8sec70cuda I Live Here Joined: Jan 2003 Posts: 13,365 Marion, South Carolina [><]	Ray...I have heard of motors being weak enough that they'd never open the secondaries like you're seeing. Seems like you have a few options...deal w/ it, rebuild it, or get a mechanical secondary carb. CHIP '70 hemicuda, 575" Hemi, 727, Dana 60 '69 road runner, 440-6, 18 spline 4 speed, Dana 60 '71 Demon, 340, low gear 904, 8.75 '73 Chrysler New Yorker, 440, 727, 8.75 '90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt '06 GMC 2500HD LBZ Duramax

Re: weak small block [Re: an8sec70cuda] #1764261 02/27/15 04:26 PM 02/27/15 04:26 PM
Joined: Jun 2004 Posts: 6,780 Alabama Mopar-Al master
Mopar-Al master Joined: Jun 2004 Posts: 6,780 Alabama	advance the cam

Re: weak small block [Re: Mopar-Al] #1764262 02/27/15 05:35 PM 02/27/15 05:35 PM
Joined: Jun 2003 Posts: 9,225 Charleston S sixpackgut OP Drag Week Mod Champion
sixpackgut OP Drag Week Mod Champion S Joined: Jun 2003 Posts: 9,225 Charleston	Its running so great right now, maybe I just dont mess with it. Needs converter and gear. Gen 3 power 6.22@110, 9.85@135 Follow @g3hemiswap on instagram performance only racing, CRT, ultimate converter, superior design concepts, ThumperCarbs

Re: weak small block [Re: sixpackgut] #1764263 02/27/15 05:46 PM 02/27/15 05:46 PM
Joined: Feb 2005 Posts: 20,174 PA. pittsburghracer "Little"John
pittsburghracer "Little"John Joined: Feb 2005 Posts: 20,174 PA.	I removed the 318 and installed a 360 I built many many years ago in my van to give it some more get up and go and it worked out real nice. .030 over 360, RV cam, headers, LD4B intake, 650 vacuum holley, and a set of J heads. Man that thing not only towed nice but got better gas mileage than the stock 318. I miss that van. Last edited by pittsburghracer; 02/27/15 05:46 PM. 1970 Duster Edelbrock headed 408 5.984@112.52 422 Indy headed small block 5.982@112.56 mph 9.42@138.27 Livin and lovin life one day at a time

Re: weak small block [Re: pittsburghracer] #1764264 02/27/15 06:08 PM 02/27/15 06:08 PM
Joined: Jan 2007 Posts: 685 pennsylvania poboyengineering mopar
poboyengineering mopar Joined: Jan 2007 Posts: 685 pennsylvania	Quote: I removed the 318 and installed a 360 I built many many years ago in my van to give it some more get up and go and it worked out real nice. .030 over 360, RV cam, headers, LD4B intake, 650 vacuum holley, and a set of J heads. Man that thing not only towed nice but got better gas mileage than the stock 318. I miss that van. Sweet van! It may be ugly, but it sure is slow. Girls comb their hair in rear view mirrors and the boys try to look so hard....

Re: weak small block [Re: poboyengineering] #1764265 02/27/15 06:18 PM 02/27/15 06:18 PM
Joined: Jun 2003 Posts: 9,225 Charleston S sixpackgut OP Drag Week Mod Champion
sixpackgut OP Drag Week Mod Champion S Joined: Jun 2003 Posts: 9,225 Charleston	Damn, I like that van. My GF was laughing at all the thumbs up I got at SGMP rolling thru the pits with mine. And mine is ugly! Gen 3 power 6.22@110, 9.85@135 Follow @g3hemiswap on instagram performance only racing, CRT, ultimate converter, superior design concepts, ThumperCarbs

Re: weak small block [Re: sixpackgut] #1764266 02/27/15 06:32 PM 02/27/15 06:32 PM
Joined: Feb 2005 Posts: 20,174 PA. pittsburghracer "Little"John
pittsburghracer "Little"John Joined: Feb 2005 Posts: 20,174 PA.	Man I had some good times in that van. When I would jump on it with my girlfriend in it I would flip this switch that was mounted on the dash and tell her it was turning on the nitrous. 2 years later I found out the switch was actually turning on my reverse lights. I'll bet that messed with some minds. 1970 Duster Edelbrock headed 408 5.984@112.52 422 Indy headed small block 5.982@112.56 mph 9.42@138.27 Livin and lovin life one day at a time

Re: weak small block [Re: sixpackgut] #1764267 02/27/15 06:32 PM 02/27/15 06:32 PM
Joined: May 2004 Posts: 3,210 robin hood country deaks master
deaks master Joined: May 2004 Posts: 3,210 robin hood country	I've got a 73 duster with a 318 600 holley, edelbrock intake, stock exh man and a single 2" exhaust and it wouldn't pull the skin of a rice pudding. I've checked the timing and adjusted the carb but it just sounds so flat, i swear it's one of the slowest cars i've ever owned. Lol Mick 69 Dart GTS 440 mopar .590 cam, Edelbrock heads, 3200# best et 6.45, 106.78, 10.14, 132.88 mph, 1.47 60ft best 60ft 1.36

Re: weak small block [Re: sixpackgut] #1764268 02/27/15 06:33 PM 02/27/15 06:33 PM
Joined: Mar 2005 Posts: 792 Earth R Rob C super stock
Rob C super stock R Joined: Mar 2005 Posts: 792 Earth	The AVS's adjustable secondary air door via the spring should be an easy adjustment. If it is not opening the door on the carb as delivered, it makes me wonder if the factory over tightened it or the engine just doesn't want the extra flow. Take it down the road and listen for the opening and make note of the rpm of where it happens. 600 cfm on a stock engine is a lot. Not that it can't or won't use it all but by the time it wants the extra amount, it may be late in the rpm band.

Re: weak small block [Re: sixpackgut] #1764269 02/27/15 06:38 PM 02/27/15 06:38 PM
Joined: Jan 2003 Posts: 1,020 Andrews,In. U.S.of A. 6 67_Satellite super stock
67_Satellite super stock 6 Joined: Jan 2003 Posts: 1,020 Andrews,In. U.S.of A.	Something to check.There should be a choke lockout on the secondaries,it may be misadjusted even if the choke is open. Wont cost anything to check.

Re: weak small block [Re: 67_Satellite] #1764270 02/27/15 06:49 PM 02/27/15 06:49 PM
Joined: Jun 2003 Posts: 9,225 Charleston S sixpackgut OP Drag Week Mod Champion
sixpackgut OP Drag Week Mod Champion S Joined: Jun 2003 Posts: 9,225 Charleston	I have the air door spring so loose, its about to fall open and it wont. How do you change motors in a van, thru the passenger door? Gen 3 power 6.22@110, 9.85@135 Follow @g3hemiswap on instagram performance only racing, CRT, ultimate converter, superior design concepts, ThumperCarbs

Re: weak small block [Re: sixpackgut] #1764271 02/27/15 07:27 PM 02/27/15 07:27 PM
Joined: Feb 2005 Posts: 20,174 PA. pittsburghracer "Little"John
pittsburghracer "Little"John Joined: Feb 2005 Posts: 20,174 PA.	Quote: I have the air door spring so loose, its about to fall open and it wont. How do you change motors in a van, thru the passenger door? That's how I did it and all went well. (4 bolts and the front seat was out) That was the first time I used a plate bolted to the carb flange and that really helped. I loaned my plate to a guy installing a 440 I build for my Dad's 1977 Dodge class C motorhome and he couldn't get over how well that worked out for him instead of the old chain set-up. 1970 Duster Edelbrock headed 408 5.984@112.52 422 Indy headed small block 5.982@112.56 mph 9.42@138.27 Livin and lovin life one day at a time

Re: weak small block [Re: pittsburghracer] #1764272 02/27/15 08:55 PM 02/27/15 08:55 PM
Joined: Jan 2003 Posts: 16,376 D dogdays I Live Here
dogdays I Live Here D Joined: Jan 2003 Posts: 16,376	I just put a NOS 450 Holley Model 4360 on my 318. Throttle response was better than the 570 Street Avenger that was sitting on top of an adapter. I was feeling really hopeful about the carb when I started computing mileage. Looks like this carb needs tuning as well, mileage dropped noticeably from the 570. Some people have gotten the Model 4360 to work, but I'd stick with a Quadrajet or T-quad. R.

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