Forward Facing Hood Scoop………
#3093709
11/12/22 01:47 PM
11/12/22 01:47 PM
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Joined: Mar 2003
Posts: 6,334 Heaven
EvilB1Dart
OP
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OP
master
Joined: Mar 2003
Posts: 6,334
Heaven
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NO MONSTER SCOOPS!!!
Doing some changes to the car and thinking about a few options for a forward facing scoop. I’ve always been a cowl hood person because they look great on just about any car, make a car look more aggressive and work relatively well for the most part. Thinking about the following ideas:
1. New flat hood and forward facing scoop. I’ll have to find a nice one that isn’t HUGE to offset the balance/look of the car. Some of those scoops look ridiculous, especially on a smaller car LOL. I want the hood and scoop to be separate of each other.
2. Keep the cowl hood, cut it and incorporate a forward facing scoop. Hood would slide-on around the scoop. I’d rather they be separate and scoop/pan be 1-piece together sealing around the carb.
3. Keep the cowl hood, cut it and build or buy a pre-fabbed lexan scoop. I know of a few companies/shops that make them, and Mike at Comp Chassis builds quality ones as well. No mailbox sizes either LOL!
"Any fool can know. The point is to understand"
- A. Einstein
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Re: Forward Facing Hood Scoop………
[Re: n20mstr]
#3093770
11/12/22 05:28 PM
11/12/22 05:28 PM
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Joined: Jan 2004
Posts: 4,563 Motor City
6PKRTSE
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master
Joined: Jan 2004
Posts: 4,563
Motor City
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I made a Super Shaker for my Challenger.
1963 Belvedere 440 Max Wedge Tribute 1970 Charger R/T S.E. 440 Six Pack 1970 Challenger R/T, 528 Hemi 1970 Charger 500 S.E. 440 4 BBL 1970 Plymouth Road Runner 383 1974 Chrysler New Yorker 440 1996 2500 RAM 488 V-10 4X4 2004 3500 Dually Cummins 4x4 2012 Challenger R/T Classic.
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Re: Forward Facing Hood Scoop………
[Re: rebel]
#3093834
11/12/22 11:14 PM
11/12/22 11:14 PM
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Joined: Jan 2004
Posts: 8,233 fredericksburg,va
cudaman1969
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master
Joined: Jan 2004
Posts: 8,233
fredericksburg,va
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I had a few 6 pak scoops on my car, I made a taller version to allow for a taller induction, but I noticed that the mounting points were getting hammered & cracking the fiberglass, even with extra reinforcing underneath. At speeds of 145+mph, the wind was hard on that hood so I changed to a cowl. No more hood damage & we even gained 2mph & increased e.t by 0.02. I'm not going forward facing again. That means it was working to good, catching too much air. I’m the opposite I think the cowl hoods look awful, brand X look. Make the hood bump then start opening the hole till ET falls off. Try to keep frontal area as small as possible. At 100 mph and above you’re pushing a 4x8 sheet of plywood. The old snorkel type worked very well
Last edited by cudaman1969; 11/12/22 11:18 PM.
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Re: Forward Facing Hood Scoop………
[Re: cudaman1969]
#3093866
11/13/22 09:10 AM
11/13/22 09:10 AM
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Joined: Jan 2003
Posts: 9,985 Frostbitefalls MN (Rocky&Bullw...
gregsdart
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master
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Posts: 9,985
Frostbitefalls MN (Rocky&Bullw...
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So the question becomes what scoop has a properly sized opening, with the intake opening in clean, above the boundry layer air? Any Pro Stock designs point to a style that will fit your needs?
8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
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Re: Forward Facing Hood Scoop………
[Re: gregsdart]
#3093869
11/13/22 09:42 AM
11/13/22 09:42 AM
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Joined: Jan 2003
Posts: 2,915 A shed in England
Tig
master
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master
Joined: Jan 2003
Posts: 2,915
A shed in England
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We just switched to a flat hood and a Makrolon clear scoop. It's sealed, haven't really got any conclusive data so far to compare it to the suitcased sized unsealed 6 pak but so far it has just beat it on mph and ET. I was going to put a sensor in there to log and see how much pressure was it was building, currently running 140+ on a good day, when the 655 goes back in we're hoping to see nearer 150, as it should be 200hp more. You can barely see it from a distance.
'74 Challenger..9.46 @ 145.9 1/4, 6.001 @ 118 1/8 so far. 4023lb !!! # N/A, Marsh performance 655ci, Indy Maxx, T/R, Indy 600-13 X's, Street legal, pump gas, full interior, Cal-Tracs, mufflers, 3:73's and real 10.5 radials. 9.51 @ 142.4 1/4, 6.003 @ 114 1/8 with our old mule KB, 572-13, 580 wedge. RHD '68 Barracuda Fastback 323ci street/strip. Best ET 13.88 @ 99.03
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Re: Forward Facing Hood Scoop………
[Re: rebel]
#3093871
11/13/22 09:47 AM
11/13/22 09:47 AM
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Joined: Aug 2008
Posts: 4,066 Mo.
racerx
master
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master
Joined: Aug 2008
Posts: 4,066
Mo.
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I had a few 6 pak scoops on my car, I made a taller version to allow for a taller induction, but I noticed that the mounting points were getting hammered & cracking the fiberglass, even with extra reinforcing underneath. At speeds of 145+mph, the wind was hard on that hood so I changed to a cowl. No more hood damage & we even gained 2mph & increased e.t by 0.02. I'm not going forward facing again. ^^^This is what I'm experiencing right now been looking into cowl hoods but trying to find one that suits my liking is the issue. I'm not into the total brand loyal thing but like was said before 70 RR/GTX's came with cowls.^^^
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Re: Forward Facing Hood Scoop………
[Re: EvilB1Dart]
#3093874
11/13/22 09:53 AM
11/13/22 09:53 AM
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Joined: Oct 2007
Posts: 4,206 New York
polyspheric
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master
Joined: Oct 2007
Posts: 4,206
New York
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For those concerned with the frontal area of a forward scoop: the opening area varies inverse to the top speed (slower car = bigger scoop). Bigger than you need just increases aero drag.
Boffin Emeritus
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Re: Forward Facing Hood Scoop………
[Re: John Burdine]
#3093946
11/13/22 01:28 PM
11/13/22 01:28 PM
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Joined: Jan 2004
Posts: 4,563 Motor City
6PKRTSE
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master
Joined: Jan 2004
Posts: 4,563
Motor City
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My Super Shaker clears my tunnel ram and two 1050's. The bubble still mounts to the engine and seals to the hood.
Last edited by 6PKRTSE; 11/13/22 01:35 PM.
1963 Belvedere 440 Max Wedge Tribute 1970 Charger R/T S.E. 440 Six Pack 1970 Challenger R/T, 528 Hemi 1970 Charger 500 S.E. 440 4 BBL 1970 Plymouth Road Runner 383 1974 Chrysler New Yorker 440 1996 2500 RAM 488 V-10 4X4 2004 3500 Dually Cummins 4x4 2012 Challenger R/T Classic.
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Re: Forward Facing Hood Scoop………
[Re: slantzilla]
#3094098
11/14/22 10:05 AM
11/14/22 10:05 AM
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Joined: Mar 2006
Posts: 9,824 MI, usa
dvw
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master
Joined: Mar 2006
Posts: 9,824
MI, usa
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I have to believe unless the engine sets really high the lexan scoop would be the best. It's out of the boundry layer. Make it only as big as needed. As mentioned a fast car doesn't need much. It doesn't obstruct vision. As Casey and I can a test the scoops we are forced to use are huge air catchers. I've also tested sealed and unsealed. Sealed beyound the 1/8 is worth a fair amount on my car. About .05 and over 2 mph. Doug
Last edited by dvw; 11/14/22 10:06 AM.
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Re: Forward Facing Hood Scoop………
[Re: dvw]
#3094099
11/14/22 10:12 AM
11/14/22 10:12 AM
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Joined: Dec 2021
Posts: 1,118 Loudoun County, VA
Brad_Haak
super stock
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super stock
Joined: Dec 2021
Posts: 1,118
Loudoun County, VA
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Just came across a Virginia law from 1991 that says my scoop is illegal (too high). The way the law is written, even a stock T/A scoop probably wouldn't pass. If I "interpret" the law to how I think it was intended to apply, the T/A would pass... but the Drag Pak-ified scoop on my car now is still about 3/4" too high.
2021 Challenger 6.4L Scat Pack 1320 100% stock: 1.680, 11.894 at 113.75 (DA 175 ft) weight reduction, wheels, tires, Hellcat air box: 1.661, 11.686 at 115.97 (DA 710 ft)
1973 Challenger 452 ci street/strip [2008] pump gas, DOT radials: 1.454, 10.523 at 126.44 (DA 514 ft)
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