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Sealed Hood to Air Pan #917145 01/30/11 03:45 PM 01/30/11 03:45 PM
Joined: Dec 2008 Posts: 202 Illinois gearhead01 OP enthusiast
gearhead01 OP enthusiast Joined: Dec 2008 Posts: 202 Illinois	How many have a sealed air pan to their hood scoop? Is it worth the effort? I have a glass hood with a 6-pack hood scoop. I have been measuring and sketching. I will have to put a panel on the bottom of the hood to reduce the area, and an air pan that is approximately 18" long and 20 inches wide that covers over the intake manifold. The cooler air will always help, but i will get that with an unsealed scoop. Do you get much more HP from the "ram effect" with the sealed hood scoop? Thanks for your inputs. John 1971 Satellite Sebring Plus - 14.46 @ 95.43 1977 Road Runner - N/B 11.02@ 119 Drag Radials

Re: Sealed Hood to Air Pan [Re: gearhead01] #917146 01/30/11 03:53 PM 01/30/11 03:53 PM
Joined: Nov 2004 Posts: 3,517 pacific northwest S Stroker Scamp master
Stroker Scamp master S Joined: Nov 2004 Posts: 3,517 pacific northwest	I did mine last year, didnt have time to try to rejet but i ran my fastest in sig below in hot weather, picked up close to a tenth and 1 mph, heres pic 6446974-airpan.jpg (1968 downloads) footbrake N/A SB 408 Scamp 10.10 @ 132 street/strip 73 Duster 340 street strip 12.79 @ 105

Re: Sealed Hood to Air Pan [Re: gearhead01] #917147 01/30/11 04:02 PM 01/30/11 04:02 PM
Joined: Oct 2004 Posts: 8,165 Left Coast B BobR master
BobR master B Joined: Oct 2004 Posts: 8,165 Left Coast	Quote: How many have a sealed air pan to their hood scoop? Is it worth the effort? I have a glass hood with a 6-pack hood scoop. I have been measuring and sketching. I will have to put a panel on the bottom of the hood to reduce the area, and an air pan that is approximately 18" long and 20 inches wide that covers over the intake manifold. The cooler air will always help, but i will get that with an unsealed scoop. Do you get much more HP from the "ram effect" with the sealed hood scoop? Thanks for your inputs. John ZERO ram effect with a 6 pak scoop. I repeat, ZERO.

Re: Sealed Hood to Air Pan [Re: BobR] #917148 01/30/11 04:09 PM 01/30/11 04:09 PM
Joined: Jan 2003 Posts: 17,841 S.E. Michigan ZIPPY I Live Here
ZIPPY I Live Here Joined: Jan 2003 Posts: 17,841 S.E. Michigan	Quote: ZERO ram effect with a 6 pak scoop. I repeat, ZERO. +1 Don't even consider any ram effect, there is nothing there to consider. It will prevent the carb from sucking in hot underhood air, and that's all. For that reason alone it's well worth doing....it makes a noticeable difference on most cars, and it did on mine. Rich H. Esse Quam Videri

Re: Sealed Hood to Air Pan [Re: ZIPPY] #917149 01/30/11 04:13 PM 01/30/11 04:13 PM
Joined: Jan 2003 Posts: 32,394 Q Quicktree I Win
Quicktree I Win Q Joined: Jan 2003 Posts: 32,394	I sealed mine with an aero type scoop and seen no difference in ET.

Re: Sealed Hood to Air Pan [Re: Quicktree] #917150 01/30/11 05:39 PM 01/30/11 05:39 PM
Joined: Sep 2003 Posts: 2,008 Sweet Home Alabama M MRMOPAR622 top fuel
MRMOPAR622 top fuel M Joined: Sep 2003 Posts: 2,008 Sweet Home Alabama	On my 67 Dodge R/T I had a STR-14 intake 2 650 DP Holley carbs.(race-car no air filters) Put a Hemi scoop on it & did not seal it,and it slowed it down bad.I run it with the hood off to see what the problem was,the air blowing across the top of carbs would start pulling gas out the vent tubes. Put a tray on it to seal the carbs picked up.06 in the 1/8 mile. "To Be The Man'You Have Got To Beat The Man" "T/D and Pro-Bracket Racer"

Re: Sealed Hood to Air Pan [Re: gearhead01] #917151 01/30/11 05:48 PM 01/30/11 05:48 PM
Joined: Oct 2003 Posts: 7,506 Az Crizila master
Crizila master Joined: Oct 2003 Posts: 7,506 Az	Quote: The cooler air will always help, John 6447137-DSC00206.JPG (482 downloads) Fastest 300

Re: Sealed Hood to Air Pan [Re: Crizila] #917152 01/30/11 05:58 PM 01/30/11 05:58 PM
Joined: Mar 2010 Posts: 632 MD-USA D Dodgeguy101 mopar
Dodgeguy101 mopar D Joined: Mar 2010 Posts: 632 MD-USA	I have to agree, the colder air will help, if nothing else it will keep it from pulling in the hotter air under the hood.

Re: Sealed Hood to Air Pan [Re: Dodgeguy101] #917153 01/30/11 06:18 PM 01/30/11 06:18 PM
Joined: Mar 2009 Posts: 2,458 Sydney,Australia tex013 top fuel
tex013 top fuel Joined: Mar 2009 Posts: 2,458 Sydney,Australia	it helped my 68 satellite,picked up a ET and MPH with a six pack scoop i think it is more about reducing hot air into the carb with this scoop Tex New best ET 10.259@129.65 . New best MPH 130.32 Finally fitted a solid cam, stepped it up a bit more 3690lbs through the mufflers New World block 3780lbs 10.278@130.80 . Wowser 10.253@130.24 footbraking from 1500rpm Power by Tex's Automotive

Re: Sealed Hood to Air Pan [Re: gearhead01] #917154 01/30/11 06:35 PM 01/30/11 06:35 PM
Joined: Nov 2009 Posts: 3,410 Belpre,Ohio C CHAPPER master
CHAPPER master C Joined: Nov 2009 Posts: 3,410 Belpre,Ohio	Quote: How many have a sealed air pan to their hood scoop? Is it worth the effort? I have a glass hood with a 6-pack hood scoop. I have been measuring and sketching. I will have to put a panel on the bottom of the hood to reduce the area, and an air pan that is approximately 18" long and 20 inches wide that covers over the intake manifold. The cooler air will always help, but i will get that with an unsealed scoop. Do you get much more HP from the "ram effect" with the sealed hood scoop? Thanks for your inputs. John Here is my set-up for the same application. Seals good,,,still working on getting the #%&!!* thing to work though!! Seems to get TOO much air/turbulence in carb above 50 MPH. I had a thread on this awhile back. The tracks closed before I could do anymore testing to correct problems. Good luck. 6447223-freddy'stoy001.jpg (792 downloads) If you like drag racing, support your local track.

Re: Sealed Hood to Air Pan [Re: CHAPPER] #917155 01/30/11 08:36 PM 01/30/11 08:36 PM
Joined: Jun 2004 Posts: 1,496 Sask, Can. 7 72demon416 pro stock
72demon416 pro stock 7 Joined: Jun 2004 Posts: 1,496 Sask, Can.	Chapper- what brand and size(diameter & drop) is that base of yours?

Re: Sealed Hood to Air Pan [Re: 72demon416] #917156 01/30/11 08:54 PM 01/30/11 08:54 PM
Joined: Nov 2009 Posts: 3,410 Belpre,Ohio C CHAPPER master
CHAPPER master C Joined: Nov 2009 Posts: 3,410 Belpre,Ohio	Quote: Chapper- what brand and size(diameter & drop) is that base of yours? K&N 16"... 2" drop. I can use the air filter(3") in there too with the cowl hood. The 6pk scoop won't allow the air filter as it hits at the rear of the scoop. If you like drag racing, support your local track.

Re: Sealed Hood to Air Pan [Re: Stroker Scamp] #917157 01/30/11 08:58 PM 01/30/11 08:58 PM
Joined: Jan 2003 Posts: 15,439 Val-haul-ass... eventually B BradH Taking time off to work on my car
BradH Taking time off to work on my car B Joined: Jan 2003 Posts: 15,439 Val-haul-ass... eventually	Quote: ... picked up close to a tenth and 1 mph... Same basic results here when going from unsealed scoop to sealed.

Re: Sealed Hood to Air Pan [Re: CHAPPER] #917158 01/30/11 09:05 PM 01/30/11 09:05 PM
Joined: Apr 2006 Posts: 3,675 Akron, Ohio U.S.A. roadhazard master
roadhazard master Joined: Apr 2006 Posts: 3,675 Akron, Ohio U.S.A.	I've never run mine with out a sealed scoop. Filter is usually pretty dry after a weekend of racing though Chapper; maybe you should try a filter to reduce turbulence 6447480-DSCN0842compressed.JPG (1053 downloads)

Re: Sealed Hood to Air Pan [Re: CHAPPER] #917159 01/30/11 10:18 PM 01/30/11 10:18 PM
Joined: Dec 2008 Posts: 202 Illinois gearhead01 OP enthusiast
gearhead01 OP enthusiast Joined: Dec 2008 Posts: 202 Illinois	Chapper: Yours is a similar set-up to what i am planning. I am using a Moroso air cleaner (14") diameter. I am figuring at least 1-1/2" clearance on each side to the air pan side/seal side walls. This will allow air all around the air cleaner. The 14� diameter wir filter will clear the inside of the scoop, with around an inch to spare. I can see that the 16:� diameter is just large enough to hit the scoop. Thanks everyone for the input and pictures. I am going ahead on construction and will post some pictures of the results. John 1971 Satellite Sebring Plus - 14.46 @ 95.43 1977 Road Runner - N/B 11.02@ 119 Drag Radials

Re: Sealed Hood to Air Pan [Re: CHAPPER] #917160 01/30/11 10:24 PM 01/30/11 10:24 PM
Joined: Dec 2008 Posts: 202 Illinois gearhead01 OP enthusiast
gearhead01 OP enthusiast Joined: Dec 2008 Posts: 202 Illinois	Chapper: A question about the turbulence. Is this with the cowl hood or the 6 pack hood. I have heard about issues with cowl hoods having turbulence problems. The fix was sealing off the grill openings in front of the windshield. The air turning at the back of the cowl would go down in the fresh air grills and never get into the rear opening of the cowl. John Last edited by gearhead01; 01/30/11 10:25 PM. 1971 Satellite Sebring Plus - 14.46 @ 95.43 1977 Road Runner - N/B 11.02@ 119 Drag Radials

Re: Sealed Hood to Air Pan [Re: gearhead01] #917161 01/30/11 10:39 PM 01/30/11 10:39 PM
Joined: Nov 2009 Posts: 3,410 Belpre,Ohio C CHAPPER master
CHAPPER master C Joined: Nov 2009 Posts: 3,410 Belpre,Ohio	Greg/John,,The height of the 3" air cleaner hits at the rear of the scoop. Maybe, the 14" might help, I'll have to do some more checking when I can get the car out of the trailer and into the shop. Also, the turbulence, or 'what ever' that's going on in there, is with the 6 pk hood. It runs fine with the cowl hood. I was trying to get cooler air to the carb when I built the air box/pan. I tried it first with the scooped hood and it was a disaster!! After I reached about 50 mph,,motor just broke up terrible. It sounded like it was drowning with fuel. I let up quickly and slowed down which eased the comotion and I idled back to the pits, changed hood back to the cowl and ran fine the rest of the day. Can't hardly wait for good weather again. I was just getting back into the swing of things!! If you like drag racing, support your local track.

Re: Sealed Hood to Air Pan [Re: CHAPPER] #917162 01/31/11 04:23 AM 01/31/11 04:23 AM
Joined: Dec 2008 Posts: 1,607 KYbywayof WV F Frito top fuel
Frito top fuel F Joined: Dec 2008 Posts: 1,607 KYbywayof WV	Interesting!! I don't think any of the SS/AH cars have any kind of seal now. All are just open!!!!!!!!!! 6448283-HoodtocarbsIndy2009.jpg (635 downloads)

Re: Sealed Hood to Air Pan [Re: Frito] #917163 01/31/11 09:41 AM 01/31/11 09:41 AM
Joined: May 2003 Posts: 2,414 St. Croix, US Virgin Islands D David_in_St_Croi top fuel
David_in_St_Croi top fuel D Joined: May 2003 Posts: 2,414 St. Croix, US Virgin Islands	With respect to the turbulence and an air filter: In David Vizard's excellent book "Tuning BL's A-Series engine" he cites an example of a downdraft Weber carb sticking through the bonnet of a Mini. It worked terrible. They put on an air filter and a scoop and the problem went away. Seemed to be reducing the turbulence over the carb mouth was the key, and the air filter helped a lot there. Plus there are all the other benefits of an air filter. https://www.facebook.com/THENEWCDRA Proud member of the liberal scientific elite

Re: Sealed Hood to Air Pan [Re: David_in_St_Croi] #917164 01/31/11 10:09 AM 01/31/11 10:09 AM
Joined: Jan 2003 Posts: 5,987 Anoka County, MN L Leigh master
Leigh master L Joined: Jan 2003 Posts: 5,987 Anoka County, MN	Yeah, that 6-pack scoup, sealed like StrokerScamp's, did nada for my Dart. For what it's worth. Many years ago, I was waiting in staging with the hood open, and a consistant winner walks by, and says, sealed hood eh?, walks on by. I started thinking about that, and my theory is, without the seal, the engine is getting a blend of average air. Round to round, it seemed to make the car tighter. That's what I think Bruce was getting at. Could be another WAG on my part too

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