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Re: Reverse Cowl or not [Re: an8sec70cuda] #2396528
11/01/17 10:10 AM
11/01/17 10:10 AM
Joined: Aug 2011
Posts: 2,856
Pattison Texas
CSK Offline
master
CSK  Offline
master

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Posts: 2,856
Pattison Texas
Originally Posted By an8sec70cuda
Guess you know how I stand on this. smoke


LOVE IT !!!!!! smile


1968 Charger COLD A/C Hilborn EFI
512ci 9.7 compression, Stealth heads, 4.10 gear A518 ODtrans 4100lb,10.93 full street car trim
2020 T/A 392 Stock 11.79 @ 114.5

Re: Reverse Cowl or not [Re: JH23] #2396619
11/01/17 01:04 PM
11/01/17 01:04 PM
Joined: Jan 2003
Posts: 1,237
North Central, Indiana
Roughbird72 Offline
pro stock
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Posts: 1,237
North Central, Indiana
Originally Posted By JH23
If it works, run it. It's all about speed isn't it?
iagree


72 Plymouth Roadrunner 11.08@123.25
Re: Reverse Cowl or not [Re: ozymaxwedge] #2396636
11/01/17 01:28 PM
11/01/17 01:28 PM
Joined: Oct 2011
Posts: 326
Alberta
Wookie316 Offline
enthusiast
Wookie316  Offline
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Joined: Oct 2011
Posts: 326
Alberta
I have a cowl on my 71 only because a 6 pack scoop looks terrible on a 3rd gen Charger because it has to sit so far back on the hood.
At first I hated it, but now that it has been on the car awhile it has grown on me.


1971 Plum Crazy Super Bee. 572 World Aluminum block with a Cope 727 & Dana 4.10 out back. 9.88 @ 138 with a 1.35 60 NA. Dialed back to 10.0’s. 4000 lbs with me in it.
Re: Reverse Cowl or not [Re: ozymaxwedge] #2397182
11/02/17 07:38 AM
11/02/17 07:38 AM
Joined: Dec 2006
Posts: 4,647
aotearoa
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aotearoa
having witnessed the improvements first hand with the Dart, adding a cowl over a 6 pak has been a no brainer for my new project. At 150mph+, areodynamics come into play & i dont want a forward facing parachute slowing me down. My preference is to have it real close to the screen, just like that look.

20170903_100045 (2).jpg20170903_100008.jpg
Re: Reverse Cowl or not [Re: ozymaxwedge] #2397328
11/02/17 02:48 PM
11/02/17 02:48 PM
Joined: Jan 2003
Posts: 13,360
Marion, South Carolina [><]
an8sec70cuda Offline
I Live Here
an8sec70cuda  Offline
I Live Here

Joined: Jan 2003
Posts: 13,360
Marion, South Carolina [><]
FWIW...when my car ran mid 10s, the cowl hood ran just as good as the 6 pack hood.
What makes it better...the cowl hood wasn't sealed to the carb, but the 6 pack hood was. The seal I had on the 6 pack hood worked too...was a tenth quicker and 1 mph faster sealed up.


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: Reverse Cowl or not [Re: an8sec70cuda] #2397552
11/02/17 10:49 PM
11/02/17 10:49 PM
Joined: Feb 2003
Posts: 991
Addison,IL
OUTLAWSSAA Offline
super stock
OUTLAWSSAA  Offline
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Posts: 991
Addison,IL
That cowl hood is worth about 2mph @ 150 versus a forward facing scoop. If my car didn't have one on it for twenty yrs I would change mine to a cowl.

Re: Reverse Cowl or not [Re: OUTLAWSSAA] #2397710
11/03/17 08:26 AM
11/03/17 08:26 AM
Joined: Sep 2005
Posts: 620
Deep DEEP SOUTH
LAD 524 Offline
mopar
LAD 524  Offline
mopar

Joined: Sep 2005
Posts: 620
Deep DEEP SOUTH
Ideally I prefer no scoop but even with this 3.5" cowl, it was the only way to make the "hardware" fit properly.

The key to a cowl hoods aesthetics I believe is to make it "flow" with the car with a tapered look, not have it come rearwards from the front with a sudden "Jimmy Durante'd" hike in its rearward height.

This is especially important on a shorter wheelbase car where a taller cowl scoop take away from the lines of the car and make it look "stumpier" when viewed from the side.

Mine will be sealed in due course.










Last edited by LAD 524; 11/03/17 08:35 AM.
Re: Reverse Cowl or not [Re: ozymaxwedge] #2398498
11/04/17 07:27 PM
11/04/17 07:27 PM
Joined: Jul 2008
Posts: 1,534
bronx n.y
O
one bad fish Offline
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bronx n.y

Re: Reverse Cowl or not [Re: LAD 524] #2398585
11/04/17 11:02 PM
11/04/17 11:02 PM
Joined: Sep 2015
Posts: 1,096
Australia
O
ozymaxwedge Offline OP
super stock
ozymaxwedge  Offline OP
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Joined: Sep 2015
Posts: 1,096
Australia
Originally Posted By LAD 524
Ideally I prefer no scoop but even with this 3.5" cowl, it was the only way to make the "hardware" fit properly.

The key to a cowl hoods aesthetics I believe is to make it "flow" with the car with a tapered look, not have it come rearwards from the front with a sudden "Jimmy Durante'd" hike in its rearward height.

This is especially important on a shorter wheelbase car where a taller cowl scoop take away from the lines of the car and make it look "stumpier" when viewed from the side.

Mine will be sealed in due course.











Your car is stunning mate, unfortunately to achieve what I thinking I will have to go 6" cowl, the 2 carbs on top of the Indy tunnel are at about 4" out at the front.
I have ordered a 6",still not sure but as it sits I have this fibre glass hood sitting here unusable so I will sit it on there and stand back for a look.
Will it stand out more than with carbs and air cleaners ?? Will it be more of a cop bait ?


1963 Plymouth Max Wedge
1971 Barracuda
Re: Reverse Cowl or not [Re: one bad fish] #2398587
11/04/17 11:03 PM
11/04/17 11:03 PM
Joined: Sep 2015
Posts: 1,096
Australia
O
ozymaxwedge Offline OP
super stock
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Joined: Sep 2015
Posts: 1,096
Australia
Originally Posted By one bad fish


Nice but in your face bad. Im trying to hide things a little shock


1963 Plymouth Max Wedge
1971 Barracuda
Re: Reverse Cowl or not [Re: ozymaxwedge] #2398595
11/04/17 11:29 PM
11/04/17 11:29 PM
Joined: Jul 2008
Posts: 1,534
bronx n.y
O
one bad fish Offline
pro stock
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Posts: 1,534
bronx n.y
Originally Posted By ozymaxwedge
Originally Posted By one bad fish


Nice but in your face bad. Im trying to hide things a little shock
lol ok

Re: Reverse Cowl or not [Re: one bad fish] #2399114
11/05/17 11:28 PM
11/05/17 11:28 PM
Joined: Mar 2003
Posts: 1,453
N.W. INDIANA
moparjohn Offline
pro stock
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Posts: 1,453
N.W. INDIANA
I had been thinking about a cowl hood on my 1970 GTX for some time. I heard all about using a Chevy hood on my Mopar from some of my friends.
I found a fiberglass hood nearby on Craigslist and bought an 8 inch tall Harwood cowl scoop. I joined the two and took it to a test and tune.
That particular night we had a pretty good head wind. In my engineering mind I thought the cowl hood would help the air up and over the GTX and out toward the sides as it gets wider toward the back. I did back to back runs with my forward facing scoop hood and the cowl hood. The result was a BIG disappointment as the GTX slowed down a 10th!
I would be open to ideas to make it work and if not find someone who would be interested in the cowl scoop.
MJ

IMG_3916.JPGIMG_3900.JPG
Last edited by moparjohn; 11/05/17 11:31 PM.
Re: Reverse Cowl or not [Re: moparjohn] #2399260
11/06/17 11:15 AM
11/06/17 11:15 AM
Joined: Jan 2003
Posts: 13,360
Marion, South Carolina [><]
an8sec70cuda Offline
I Live Here
an8sec70cuda  Offline
I Live Here

Joined: Jan 2003
Posts: 13,360
Marion, South Carolina [><]
The rear of the cowl scoop needs to be real close to the windshield for it to work and actually pull air in. I can't slide my hand b/t the scoop and windshield...palm on the glass.

hood.jpeg

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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