cowl induction hoods - The 1947 - Present Chevrolet & GMC Truck Message Board Network

runx68SWB · 06-13-2002, 10:42 PM

was wondering what you guys think of them.... fiberglass or metal.... have you found that they are fairly functional.... dont care to buy one for looks alone.... dont you hate when you look under the hood of a car and see that pretty cowl is plugged up or serves no purpose

Patrick Sullivan · 06-13-2002, 11:12 PM

I have been looking at them to replace my old rusted out hood. I don't imagine they'd be very functional, unless you built a duct coming from the cowl or something. Being in Oregon, I'm afraid I'll suck in too much water through the cowl..

68 Suburban · 06-13-2002, 11:27 PM

Patrick Sullivan, I don't know about on our trucks, but on the Camaro's and Chevelle's the design was to suck air from near the windshield. No duct work was necessary.

71Chev · 06-13-2002, 11:29 PM

Camaros and Chevelles had "duct" work that sealed down around the breather.

www.gmcpauls.com has the good steel cowl hoods. Took 20 minutes to line mine up perfect.

runx68SWB · 06-13-2002, 11:33 PM

i was thinking they might work fairly well or better than stock anyway if you were to use one of those new K&N extreme air filter lids along with the cowl hood.... i do know the goodmark made hood is made with a built in screen which would keep water out and let air in.... i wouldnt want more than 2 or 2-1/2 inches of cowl.... anymore than that would be too much

mikep · 06-13-2002, 11:36 PM

To me they look good on chevelles and camaros and thats about it.

Longhorn Man · 06-13-2002, 11:36 PM

I don't think watter would be a concern, this was a factory option on muscle cars, and they kept doint it, even the new T/A's get ram air.
Even if you do not seal the air cleaner assembly to the hood, you will get rid of alot of hot air from under the hood. I think this alone is worth some $$. Esp if you run an open air filter...sucking up all that hot air from the headers. Lower air intake temp = more power.

runx68SWB · 06-13-2002, 11:44 PM

i really like the price and look of the cowl hood from gmc pauls.... when i decide to get one i think that will be the place.... did yours have the screen 71 chev ?

71Chev · 06-13-2002, 11:49 PM

It isn't screen, it's a block off plate with lots of round holes in it for airflow. I can email you a pic of it.
I think it made an improvement in performance, or it just looks faster.

Big69C20 Toy · 06-14-2002, 01:14 AM

I tend to think they can be useful. At my old job i discussed this with another engineer (one who'd been thru advanced flow and other fun classes). He said on a truck it could be particularly helpful because of the steep angle on the windshield. You get a nasty little vortex there that a lot of air swirls in. With the cowl all that wind or most of it would flow down the cowl as it would be much easier to do that trying to go straight into a windshield or climbing that big slope up to the roof. Regarding the cooling effects of the air yes that could be a rather nice thing too especially if you've got some hot components running down there. As far as ducting work, not too much is needed i dont think if you have a nice big open air filter, it'll flow right in path.

I'd like to get one eventually and i think fiberglass would be nicer for the weight. only shame is they are so expensive, but hey you only live once...

Patrick Sullivan · 06-14-2002, 01:56 AM

Really.. I figured it'd just be good for sucking rain into my distributor cap. I suppose now that I have a justified reason, I HAVE to get one!

68 Suburban · 06-14-2002, 02:12 AM

71Chev, ok I guess I consider a 'duct' and a 'seal' a different thing

blue72stepside · 06-14-2002, 02:13 AM

Is one is fiberglass, it took a few hours to line up.
it does draw air in u can feel it sucking in is one has screen inside and out

70c10 · 06-14-2002, 07:29 AM

Blue72,
AWESOME Truck!!!!

**1970 CST Short Wide** · 06-14-2002, 10:00 AM

I put a steel one on my truck, its reinforced under and has the block out screen with all holes. It fits real nice. My old hood had a nasty crease in it and I was at the car show soooo $400 and bingo new hood. sorry for the small pic I'm still try to figure out this picture posting

Sorry wrong Pic

Go to www.picturetrail.com/70cst for a pic with new hood

68 Suburban · 06-14-2002, 10:07 AM

Here you go 1970 CST Short Wide,

runx68SWB · 06-14-2002, 10:23 AM

right on.... ill definitely be ordering one in the next few weeks.... there goes a paycheck in one shot but it will be worth i think from a performance and asthetic standpoint.... great pic 1970 CST short wide.... thats an awesome truck.... i do believe those 2 inch rise cowl hoods do our trucks justice.... thanks for the example

**1970 CST Short Wide** · 06-14-2002, 10:32 AM

Thanks 68burb but I CANT SEE IT. All I get is the RED X

Thanks for tryin

mikej71 · 06-14-2002, 10:39 AM

I also think mudder67 and 72chevylwb's trucks look awesome with the cowl hoods. I definitely have to have one.

Mudder · 06-14-2002, 11:14 AM

Try to find a goodmark hood. No promises but, but hopefully it will fit good.

XXL · 06-14-2002, 11:21 AM

No offense to any who disagree (since I think everybody should make their trucks look good for THEM and not me), but I don't think the cowl hoods look good on 2wd stepsides. There's something about the visual 'weight' that makes the trucks look fromnt/top heavy, which is why I will be doing a regular steel hood. And taking a look at blue72stepside's pic and compare to 68 Suburban's pic.

As I said, no offense intended... it's the "eye of the beholder" thing.

Kenneth

Smooth68 · 06-14-2002, 11:41 AM

I've found for me that only certain cowl hoods have the right "look". I definitley think the raised cowl section has to be shaped a certain way for me to like the look.

Dean23 · 06-15-2002, 04:57 PM

I have one on my 68. I bought it for looks. Also in the future i now know that a 6.71 supercharger will fit under my hood thanks to the extra room from the cowl. I cant wait to have the truck on the rooad though I'm hoping for next summer

70 Jimmy · 06-15-2002, 09:22 PM

I like them best on a 67/68. The slop seems to flow better. Either way, nice trucks guys!

06-13-2002, 10:42 PM	#1
runx68SWB Registered User Join Date: May 2002 Location: pueblo, Co Posts: 31	cowl induction hoods was wondering what you guys think of them.... fiberglass or metal.... have you found that they are fairly functional.... dont care to buy one for looks alone.... dont you hate when you look under the hood of a car and see that pretty cowl is plugged up or serves no purpose

06-13-2002, 11:12 PM	#2
Patrick Sullivan Transcendental Trucker Join Date: Dec 2001 Location: Rockaway Beach, OR Posts: 374	I have been looking at them to replace my old rusted out hood. I don't imagine they'd be very functional, unless you built a duct coming from the cowl or something. Being in Oregon, I'm afraid I'll suck in too much water through the cowl.. __________________ Patrick Sullivan \| sullivan@oregoncoast.com Rockaway Beach, Oregon 1972 Chevy Cheyenne C-20 1998 Dodge Dakota 4x4 So, fill to me the parting glass And drink a health whate'er befalls... Then gently rise and softly call Goodnight and joy be to you all!

06-13-2002, 11:27 PM	#3
68 Suburban Registered User Join Date: Oct 2000 Location: From Chicago, Live in Phoenix, AZ Posts: 6,802	Patrick Sullivan, I don't know about on our trucks, but on the Camaro's and Chevelle's the design was to suck air from near the windshield. No duct work was necessary. __________________ Just sitting here contemplating contemplation.

06-13-2002, 11:29 PM	#4
71Chev Senior Member Join Date: Dec 2000 Location: Indiana Posts: 3,074	Camaros and Chevelles had "duct" work that sealed down around the breather. www.gmcpauls.com has the good steel cowl hoods. Took 20 minutes to line mine up perfect. __________________ 71 Chevy CST Long Fleet 350/350/3.07 leaf rear.

06-13-2002, 11:36 PM	#6
mikep Used to have a truck Join Date: May 2002 Location: port orchard WA Posts: 1,552	To me they look good on chevelles and camaros and thats about it. __________________ No truck :-(

06-13-2002, 11:33 PM	#5
runx68SWB Registered User Join Date: May 2002 Location: pueblo, Co Posts: 31	i was thinking they might work fairly well or better than stock anyway if you were to use one of those new K&N extreme air filter lids along with the cowl hood.... i do know the goodmark made hood is made with a built in screen which would keep water out and let air in.... i wouldnt want more than 2 or 2-1/2 inches of cowl.... anymore than that would be too much

06-13-2002, 11:36 PM	#7
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	I don't think watter would be a concern, this was a factory option on muscle cars, and they kept doint it, even the new T/A's get ram air. Even if you do not seal the air cleaner assembly to the hood, you will get rid of alot of hot air from under the hood. I think this alone is worth some $$. Esp if you run an open air filter...sucking up all that hot air from the headers. Lower air intake temp = more power.

06-13-2002, 11:44 PM	#8
runx68SWB Registered User Join Date: May 2002 Location: pueblo, Co Posts: 31	i really like the price and look of the cowl hood from gmc pauls.... when i decide to get one i think that will be the place.... did yours have the screen 71 chev ?

06-13-2002, 11:49 PM	#9
71Chev Senior Member Join Date: Dec 2000 Location: Indiana Posts: 3,074	It isn't screen, it's a block off plate with lots of round holes in it for airflow. I can email you a pic of it. I think it made an improvement in performance, or it just looks faster. __________________ 71 Chevy CST Long Fleet 350/350/3.07 leaf rear.

06-14-2002, 01:14 AM	#10
Big69C20 Toy Livin' it up. Join Date: Nov 2001 Location: Richland, MI Posts: 2,212	I tend to think they can be useful. At my old job i discussed this with another engineer (one who'd been thru advanced flow and other fun classes). He said on a truck it could be particularly helpful because of the steep angle on the windshield. You get a nasty little vortex there that a lot of air swirls in. With the cowl all that wind or most of it would flow down the cowl as it would be much easier to do that trying to go straight into a windshield or climbing that big slope up to the roof. Regarding the cooling effects of the air yes that could be a rather nice thing too especially if you've got some hot components running down there. As far as ducting work, not too much is needed i dont think if you have a nice big open air filter, it'll flow right in path. I'd like to get one eventually and i think fiberglass would be nicer for the weight. only shame is they are so expensive, but hey you only live once... __________________ -Greg; Sold the 69 C20. It's off to a better home with more love! Now onto the 86 CUCV M1009; K5 blazer with 6.2L diesel, corp 10 bolt axles, Detroit locker in the rear, trutrac front, 3.73 gears, 35" tires.

06-14-2002, 01:56 AM	#11
Patrick Sullivan Transcendental Trucker Join Date: Dec 2001 Location: Rockaway Beach, OR Posts: 374	Really.. I figured it'd just be good for sucking rain into my distributor cap. I suppose now that I have a justified reason, I HAVE to get one! __________________ Patrick Sullivan \| sullivan@oregoncoast.com Rockaway Beach, Oregon 1972 Chevy Cheyenne C-20 1998 Dodge Dakota 4x4 So, fill to me the parting glass And drink a health whate'er befalls... Then gently rise and softly call Goodnight and joy be to you all!

06-14-2002, 02:12 AM	#12
68 Suburban Registered User Join Date: Oct 2000 Location: From Chicago, Live in Phoenix, AZ Posts: 6,802	71Chev, ok I guess I consider a 'duct' and a 'seal' a different thing __________________ Just sitting here contemplating contemplation.

06-14-2002, 02:13 AM	#13
blue72stepside Registered User Join Date: Aug 2001 Location: Morgan Hill, California Posts: 309	Is one is fiberglass, it took a few hours to line up. it does draw air in u can feel it sucking in is one has screen inside and out Attached Images __________________ 72 Cheyenne Stepside 357/TH350 3.07 Posi 379HP@5500 412FT#@4000 96 1500 Work Truck 88 Chevy Van 3/4 97 Tahoe 8.5 Lift (Sons) 00 1500 LT 4x4 (Sons) 98 Ford Cobra (Wifes Car)

06-14-2002, 07:29 AM	#14
70c10 67-72 Addict! Join Date: Feb 2002 Location: The TAX State! Posts: 7,857	Blue72, AWESOME Truck!!!! __________________ Jim 1970 C/10 Fleetside w/Ghost Flames Lowered 4.5" front and 4" rear (Raked) 355/350 Turbo w/shift kit 10" Redneck Performance Verter w/2500 stall Hooker Super Comps part#2808-1 Performer RPM Air-Gap 12 Bolt w/3:73 gears- Eaton Posi Comp Cams XE262 with 1.6 Crane Energizers, Road Demon 625 and Brodix IK 180 heads

06-14-2002, 10:00 AM	#15
1970 CST Short Wide Senior Moment Join Date: Mar 2002 Location: Pittsburg Ca Posts: 4,047	I put a steel one on my truck, its reinforced under and has the block out screen with all holes. It fits real nice. My old hood had a nasty crease in it and I was at the car show soooo $400 and bingo new hood. sorry for the small pic I'm still try to figure out this picture posting Sorry wrong Pic Go to www.picturetrail.com/70cst for a pic with new hood __________________ 1970 CST LS 1 6 speed Ford 9 inch Detroit Tru Track, Dakota Didgital, Vintage Air, QA1 Coil Overs Front & Rear Lots of FUN 2013 GMC PU, Oldest Son 71 GMC LWB. QA1 Suspension, Angry SB. Youngest Son 2019 GMC Diesil Dually. Youngest Son 2017 Toyota SUV Daughters car 2018 Traverse , Wife’s Ride Pittsburg Ca 94565



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06-14-2002, 10:07 AM	#16
68 Suburban Registered User Join Date: Oct 2000 Location: From Chicago, Live in Phoenix, AZ Posts: 6,802	Here you go 1970 CST Short Wide, __________________ Just sitting here contemplating contemplation.

06-14-2002, 10:23 AM	#17
runx68SWB Registered User Join Date: May 2002 Location: pueblo, Co Posts: 31	right on.... ill definitely be ordering one in the next few weeks.... there goes a paycheck in one shot but it will be worth i think from a performance and asthetic standpoint.... great pic 1970 CST short wide.... thats an awesome truck.... i do believe those 2 inch rise cowl hoods do our trucks justice.... thanks for the example

06-14-2002, 10:32 AM	#18
1970 CST Short Wide Senior Moment Join Date: Mar 2002 Location: Pittsburg Ca Posts: 4,047	Thanks 68burb but I CANT SEE IT. All I get is the RED X Thanks for tryin __________________ 1970 CST LS 1 6 speed Ford 9 inch Detroit Tru Track, Dakota Didgital, Vintage Air, QA1 Coil Overs Front & Rear Lots of FUN 2013 GMC PU, Oldest Son 71 GMC LWB. QA1 Suspension, Angry SB. Youngest Son 2019 GMC Diesil Dually. Youngest Son 2017 Toyota SUV Daughters car 2018 Traverse , Wife’s Ride Pittsburg Ca 94565

06-14-2002, 10:39 AM	#19
mikej71 Unregistered User Join Date: Dec 2001 Location: Houston, TX USA Posts: 538	I also think mudder67 and 72chevylwb's trucks look awesome with the cowl hoods. I definitely have to have one. __________________ 71 SWB Stepside SB400/TH350

06-14-2002, 11:14 AM	#20
Mudder Registered User Join Date: Feb 2001 Location: East Central, MO Posts: 11,339	One thing! Try to find a goodmark hood. No promises but, but hopefully it will fit good.

06-14-2002, 11:21 AM	#21
XXL Señor Member Join Date: May 2002 Location: Edge of the world Posts: 5,367	No offense to any who disagree (since I think everybody should make their trucks look good for THEM and not me), but I don't think the cowl hoods look good on 2wd stepsides. There's something about the visual 'weight' that makes the trucks look fromnt/top heavy, which is why I will be doing a regular steel hood. And taking a look at blue72stepside's pic and compare to 68 Suburban's pic. As I said, no offense intended... it's the "eye of the beholder" thing. Kenneth __________________ Craigslist \| ebay \| Engrishtees \| www.myattitudesucks.com \| Follow me on Twitter

06-14-2002, 11:41 AM	#22
Smooth68 Registered User Join Date: Aug 2001 Location: West Fork, Arkansas - Razorback Country Posts: 1,826	I've found for me that only certain cowl hoods have the right "look". I definitley think the raised cowl section has to be shaped a certain way for me to like the look. __________________ Smooth68's Web Site WTB 64-66 project or frame/cab, SWB or LWB...I have the fever! Whatcha got?? '68 Short Step - Shaved Body, Soon Bagged - *SOLD* Driver-2004 GMC Z-71 Ext-cab

06-15-2002, 04:57 PM	#23
Dean23 68cst_ss490 Join Date: May 2001 Location: edmonton,canada Posts: 1,363	I have one on my 68. I bought it for looks. Also in the future i now know that a 6.71 supercharger will fit under my hood thanks to the extra room from the cowl. I cant wait to have the truck on the rooad though I'm hoping for next summer __________________ Dean edmonton,canada a winter wonderland 2005 Chevrolet Avalanche LT cold air intake, performance exhaust, Comp cams cam, jba shorty ceramic headers. http://www.cardomain.com/ride/3090973

06-15-2002, 09:22 PM	#24
70 Jimmy aka Crusher, Crushergmc Join Date: Mar 2000 Location: Oregon Posts: 1,834	I like them best on a 67/68. The slop seems to flow better. Either way, nice trucks guys! __________________ "KEEP IT DOWN!" 70 Jimmy 454 2wd 56 GMC Big Window "It's funny till someone gets hurt, then it's freakin' hilarious"

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