Sealed Hood to Air Pan
#917145
01/30/11 03:45 PM
01/30/11 03:45 PM
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Joined: Dec 2008
Posts: 213 Illinois
gearhead01
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enthusiast
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Illinois
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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
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Re: Sealed Hood to Air Pan
[Re: gearhead01]
#917146
01/30/11 03:53 PM
01/30/11 03:53 PM
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Joined: Nov 2004
Posts: 3,518 pacific northwest
Stroker Scamp
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master
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pacific northwest
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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
footbrake N/A SB 408 Scamp 10.10 @ 132 street/strip 73 Duster 340 street strip 12.79 @ 105
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Re: Sealed Hood to Air Pan
[Re: gearhead01]
#917147
01/30/11 04:02 PM
01/30/11 04:02 PM
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Joined: Oct 2004
Posts: 8,166 Left Coast
BobR
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Posts: 8,166
Left Coast
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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.
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Re: Sealed Hood to Air Pan
[Re: Quicktree]
#917150
01/30/11 05:39 PM
01/30/11 05:39 PM
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Joined: Sep 2003
Posts: 2,008 Sweet Home Alabama
MRMOPAR622
top fuel
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top fuel
Joined: Sep 2003
Posts: 2,008
Sweet Home Alabama
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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"
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Re: Sealed Hood to Air Pan
[Re: Dodgeguy101]
#917153
01/30/11 06:18 PM
01/30/11 06:18 PM
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Joined: Mar 2009
Posts: 2,490 Sydney,Australia
tex013
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top fuel
Joined: Mar 2009
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Sydney,Australia
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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
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Re: Sealed Hood to Air Pan
[Re: gearhead01]
#917154
01/30/11 06:35 PM
01/30/11 06:35 PM
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Joined: Nov 2009
Posts: 3,410 Belpre,Ohio
CHAPPER
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master
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Belpre,Ohio
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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.
If you like drag racing, support your local track.
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Re: Sealed Hood to Air Pan
[Re: CHAPPER]
#917159
01/30/11 10:18 PM
01/30/11 10:18 PM
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Joined: Dec 2008
Posts: 213 Illinois
gearhead01
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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
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Re: Sealed Hood to Air Pan
[Re: CHAPPER]
#917160
01/30/11 10:24 PM
01/30/11 10:24 PM
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Joined: Dec 2008
Posts: 213 Illinois
gearhead01
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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
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Re: Sealed Hood to Air Pan
[Re: gearhead01]
#917161
01/30/11 10:39 PM
01/30/11 10:39 PM
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Joined: Nov 2009
Posts: 3,410 Belpre,Ohio
CHAPPER
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Belpre,Ohio
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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.
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Re: Sealed Hood to Air Pan
[Re: David_in_St_Croi]
#917164
01/31/11 10:09 AM
01/31/11 10:09 AM
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Joined: Jan 2003
Posts: 5,997 Anoka County, MN
Leigh
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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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