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Re: Hood scoop or cowl hood?
[Re: Georg]
#426437
08/04/09 07:47 AM
08/04/09 07:47 AM
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Joined: Jan 2003
Posts: 13,357
Marion, South Carolina [><]
an8sec70cuda
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 13,357
Marion, South Carolina [><]
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I used to have the carb sealed to the scoop when I had the wedge motor in the car, don't think I have any pics of the air pan I made for it. With the hemi, the carb sits so high that it's a REAL pain to seal it up, so I do not have it sealed to the carb now. I'm gonna attach a pic, see if it works.  CHIP
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
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Re: Hood scoop or cowl hood?
[Re: an8sec70cuda]
#426438
08/04/09 08:31 AM
08/04/09 08:31 AM
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Joined: Nov 2004
Posts: 2,286
Hamilton,Ont
72chrgrally
top fuel
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top fuel
Joined: Nov 2004
Posts: 2,286
Hamilton,Ont
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I personally think that most forward facing scoops are hidious. I have seen Six Pack and Hemi scoops trying to get airborne at speed. I like the "sleeker" look of a cowl for my application. The thought of goin' 150+ with a huge sail on my hood doesn't appeal to me.
Steve
Photobucket sucks
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Re: Hood scoop or cowl hood?
[Re: an8sec70cuda]
#426439
08/04/09 08:33 AM
08/04/09 08:33 AM
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Joined: Sep 2005
Posts: 769
Europa, Estonia
Georg
OP
super stock
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OP
super stock
Joined: Sep 2005
Posts: 769
Europa, Estonia
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Guys, sorry but I dont understand...do it pulls air in back of scoop then? So I make plate what seals cowl hood inside and let open only that hole what is "beside" windshield? I thoughted that cowl hood is to let hot air out..that cold air enters through grille and leaves through cowl hood 
Outlaw Plymouth Valiant
R5/P7 Powered by Liuzzo Racing
COMP Performance Group dealer in Baltic
Premium Performance
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Re: Hood scoop or cowl hood?
[Re: Georg]
#426440
08/04/09 08:54 AM
08/04/09 08:54 AM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Quote:
Guys, sorry but I dont understand...do it pulls air in back of scoop then? So I make plate what seals cowl hood inside and let open only that hole what is "beside" windshield?
I thoughted that cowl hood is to let hot air out..that cold air enters through grille and leaves through cowl hood
No... there is a negative air pressure at the windshield
(more as you get lower to the base), that negative
supplies the air to the carb, its better to seal
the carb to the scoop (keeps the hot air out of the carb).
On a front facing scoop you need to get the inlet
up into the air flow... as a rule of thumb... take
a string and tape it to the front edge of the hood...
tape the other end to the roof line... your scoop
opening should be ABOVE that string
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Re: Hood scoop or cowl hood?
[Re: MR_P_BODY]
#426441
08/04/09 09:54 AM
08/04/09 09:54 AM
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Joined: Jan 2003
Posts: 13,357
Marion, South Carolina [><]
an8sec70cuda
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 13,357
Marion, South Carolina [><]
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Yep, it pulls air in to the carb from the base of the windshield. CHIP
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
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Re: Hood scoop or cowl hood?
[Re: MR_P_BODY]
#426442
08/04/09 09:54 AM
08/04/09 09:54 AM
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Joined: Nov 2005
Posts: 1,522
Wisconsin
Garceau
pro stock
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pro stock
Joined: Nov 2005
Posts: 1,522
Wisconsin
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[quoteOn a front facing scoop you need to get the inlet up into the air flow... as a rule of thumb... take a string and tape it to the front edge of the hood... tape the other end to the roof line... your scoop opening should be ABOVE that string
Bingo....how many 6pack and hemi scoops do this? None that I have ever seen, also the people talking about their 6 pack scoops catching air. My thoughts are I wonder if the air was coming through the grill and pushing it up, not necessarily from the scoop itself.
Also most of the front facing ones, to me just dont look right on the older iron. Some come out real nice, some not.
Personally I prefer the cowl scoop for many reasons. Having had a huge scoop on older iron, it was a real pain in the ass to see around at times.
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Re: Hood scoop or cowl hood?
[Re: MR_P_BODY]
#426443
08/04/09 10:02 AM
08/04/09 10:02 AM
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Joined: Jan 2003
Posts: 2,877
SE Nunya
Bubba
master
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master
Joined: Jan 2003
Posts: 2,877
SE Nunya
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Quote:
No... there is a negative air pressure at the windshield
(more as you get lower to the base), that negative
supplies the air to the carb, its better to seal
the carb to the scoop (keeps the hot air out of the carb).
On a front facing scoop you need to get the inlet
up into the air flow... as a rule of thumb... take
a string and tape it to the front edge of the hood...
tape the other end to the roof line... your scoop
opening should be ABOVE that string
Raff knows... Trust me.
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Re: Hood scoop or cowl hood?
[Re: Bubba]
#426444
08/04/09 10:10 AM
08/04/09 10:10 AM
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Joined: Jan 2003
Posts: 2,932
Finalnd, Perkele
jyrki
master
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master
Joined: Jan 2003
Posts: 2,932
Finalnd, Perkele
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My old car slowed down considerably with a cowl hood. A switch back to six pack scoop and the performance was restored. Was kind of amazed, but can't really fight the numbers. Must have been somekind of an aerodynamical gremlin. I have yet to see a six pack or Hemi scoop that doesn't work, but the openings are huge and create a lot of lift, and propably don't help the drag coefficience either. You don't have any scoop limitations, so I would propably bick a modern style, reasonably high pro style front facing scoop.
Plynouth VIP '67 TT IC EFI
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Re: Hood scoop or cowl hood?
[Re: cudabunch]
#426446
08/04/09 04:51 PM
08/04/09 04:51 PM
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Joined: May 2008
Posts: 1,238
North Cackilacky
sdaurity
pro stock
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pro stock
Joined: May 2008
Posts: 1,238
North Cackilacky
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Cowl hoods kick a$$, its just that simple, sorry. I run in a class that mandates no foward facing hoodscoops but still wouldn't put on a god awful hideous six pack scoop if my life depended on it. 
Last edited by heads-up; 08/04/09 05:13 PM.
One day I will have something cool here.
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Re: Hood scoop or cowl hood?
[Re: sdaurity]
#426447
08/04/09 05:01 PM
08/04/09 05:01 PM
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Joined: Jan 2003
Posts: 11,709
Portage,michigan
B3422W5
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 11,709
Portage,michigan
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Are ssah cars required to run the scoops they do??
69 Dart GTS A4 Silver All steel, flat factory hood, 3360race weight
418 BPE factory replacement headed stroker, 565 lift solid cam
Best so far, 10.40 @127 1/4
1.41 best 60 foot
6.60 at 103.90 1/8
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Re: Hood scoop or cowl hood?
[Re: B3422W5]
#426448
08/04/09 05:31 PM
08/04/09 05:31 PM
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Joined: Nov 2003
Posts: 810
Sidney Ohio
9SecRoadRunner
super stock
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super stock
Joined: Nov 2003
Posts: 810
Sidney Ohio
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My Cuda had a cowl hood on it when I bought it, the hood is listed in parts for sale, it might work great, but my personal preference makes me wanna toss it! car looks like a dang camaro with it on...
You Thinking It's So Doesn't Make It a Fact
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Re: Hood scoop or cowl hood?
[Re: B3422W5]
#426449
08/04/09 05:32 PM
08/04/09 05:32 PM
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Joined: Jan 2003
Posts: 42,714
Spokane Washington
ScottSmith_Harms
Mr Wizzard
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Mr Wizzard
Joined: Jan 2003
Posts: 42,714
Spokane Washington
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Quote:
Cowl hoods kick a$$, its just that simple, sorry.
Sounds just like something Joe Dirt once said 
Joe Dirt also said:
"How exactly is a rainbow made? How exactly does the sun set? How exactly does a positrack rear end on a Plymouth work? It just does."
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