Cool vs. Warm air intake? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Long Knight · 02-28-2003, 03:25 PM

I am wondering if there are advantages/performance differences in cool air vs. warm air getting sucked into the air cleaner. If so, I am thinking about running a tube away from the engine heat. Anyone running an air filter system like they have on newer vehicles? Pics?

Thanks

Ro

Longhorn Man · 02-28-2003, 03:43 PM

Cold air is better for the engine...hence the cowl induction, the old open shaker hood scoups, and the other factory deals...not to mention the newer style ones you mention.
The cooler the air, the more dence it is, so it is actually putting more oxygen into the cylinders.
Other than a wowl induction hood, or a big honkin hood scoop, there is no way (that I have seen) to run a good cold air intake and have it look nice, onless you want to cut holes in your core support.
It does help quite a bit with performance, Car Craft had documented it on the drag strip.

Long Knight · 02-28-2003, 04:03 PM

Well, I ran out of things to do on my truck and was just looking for something else to do...Yea Right! I think there's always someting to do them as long as you own one.

MandarinSixSeven · 02-28-2003, 04:26 PM

this would be cool
www.ramairbox.com

ckhd · 02-28-2003, 05:04 PM

The guy I bought my Suburban from cut the radiator support to do a cool-air induction on it. He took the cool-air stuff out when he sold it, but now I don't have to feel guilty about cutting a hole in the support to do it.

It's a air-density thing like he said. The colder the air, the denser it is. That means more air/fuel gets sucked into the cylinders giving it more power.

Andy4639 · 02-28-2003, 05:12 PM

This is my set up and it works fine. I know I have a late model engine but the set up would be the same Idea. If you have gone to a later model alternator then cut the hole where the old regulater went.

Long Knight · 02-28-2003, 05:29 PM

That Ram Air Box reminds me of a Rainbow Vacuum.

Well, I have the gears turning now to come up with a creative idea for an inlet for cold air.

Andy4639 · 02-28-2003, 10:31 PM

I got it out of a 90 caddy, it's there factory box. I did however change it to suck from the bottom of the box. I have a 4" opening for the intake now. I still need to do some work with the rest of it with the wippy black hose for the snorkel tube, but thats another story. It works though.

Low67C10 · 02-28-2003, 10:38 PM

Cold air makes a noticiable difference. Ive never used a cold air type intake on a older car, but when I built my last Oldsmobile engine I filled the exhaust crossovers in the cylinder heads with aluminum so the hot exhuast can no longer run under the intake and warm the intake. Long story short, it made a huge difference especially after a long freeway run.

O'l Buck · 03-01-2003, 03:06 AM

Yes, cold air is better, that's the reason all the HD diesel manufactures are using air to air aftercooling instead of air to water these days. Major difference in boost pressure and performance.

02-28-2003, 03:25 PM	#1
Long Knight Spank 'em if you got 'em! Join Date: Nov 2002 Location: Kansas City Posts: 628	Cool vs. Warm air intake? I am wondering if there are advantages/performance differences in cool air vs. warm air getting sucked into the air cleaner. If so, I am thinking about running a tube away from the engine heat. Anyone running an air filter system like they have on newer vehicles? Pics? Thanks Ro __________________ Long Knight '71 C-20, 350ci, TH350, Edl. 1406 Carb w/elec.choke, Ignitor ignition, Viper Tires, Orange Dipstick

02-28-2003, 04:03 PM	#3
Long Knight Spank 'em if you got 'em! Join Date: Nov 2002 Location: Kansas City Posts: 628	Well, I ran out of things to do on my truck and was just looking for something else to do...Yea Right! I think there's always someting to do them as long as you own one. __________________ Long Knight '71 C-20, 350ci, TH350, Edl. 1406 Carb w/elec.choke, Ignitor ignition, Viper Tires, Orange Dipstick

02-28-2003, 04:26 PM	#4
MandarinSixSeven Seasonal Poster Join Date: Apr 2002 Location: Kelowna BC Canada Posts: 896	this would be cool www.ramairbox.com __________________ 67 GMC Short Step 350/4-Speed/3.08 Posi Front/Rear Sway Bars Kelowna BC, Canada Member of DTPW

02-28-2003, 05:04 PM	#5
ckhd Registered User Join Date: Oct 2000 Location: St. Johns, Arizona Posts: 2,660	The guy I bought my Suburban from cut the radiator support to do a cool-air induction on it. He took the cool-air stuff out when he sold it, but now I don't have to feel guilty about cutting a hole in the support to do it. It's a air-density thing like he said. The colder the air, the denser it is. That means more air/fuel gets sucked into the cylinders giving it more power. __________________ my 2¢ - t.i.o.l.i. Bowen 1968 K20 fleet 1969 K10 swb fleet 1972 K10 Suburban 1972 C10 lwb step 1992 K1500 'burb 1995 K2500 'burb 1997 C1500 'burb 1999 K1500 2000 K1500 'burb Why do I own so many Suburbans?

02-28-2003, 05:12 PM	#6
Andy4639 Old member Join Date: Jan 2002 Location: Liberty, & Garden City S.C. , U.S. Posts: 19,945	Cold Air This is my set up and it works fine. I know I have a late model engine but the set up would be the same Idea. If you have gone to a later model alternator then cut the hole where the old regulater went. Attached Images __________________ 1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs.

02-28-2003, 03:43 PM	#2
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Cold air is better for the engine...hence the cowl induction, the old open shaker hood scoups, and the other factory deals...not to mention the newer style ones you mention. The cooler the air, the more dence it is, so it is actually putting more oxygen into the cylinders. Other than a wowl induction hood, or a big honkin hood scoop, there is no way (that I have seen) to run a good cold air intake and have it look nice, onless you want to cut holes in your core support. It does help quite a bit with performance, Car Craft had documented it on the drag strip.

02-28-2003, 05:29 PM	#7
Long Knight Spank 'em if you got 'em! Join Date: Nov 2002 Location: Kansas City Posts: 628	That Ram Air Box reminds me of a Rainbow Vacuum. Well, I have the gears turning now to come up with a creative idea for an inlet for cold air. __________________ Long Knight '71 C-20, 350ci, TH350, Edl. 1406 Carb w/elec.choke, Ignitor ignition, Viper Tires, Orange Dipstick

02-28-2003, 10:31 PM	#8
Andy4639 Old member Join Date: Jan 2002 Location: Liberty, & Garden City S.C. , U.S. Posts: 19,945	Vacuum I got it out of a 90 caddy, it's there factory box. I did however change it to suck from the bottom of the box. I have a 4" opening for the intake now. I still need to do some work with the rest of it with the wippy black hose for the snorkel tube, but thats another story. It works though. __________________ 1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs.

02-28-2003, 10:38 PM	#9
Low67C10 Registered User Join Date: May 2002 Location: Southern California Posts: 66	Cold air makes a noticiable difference. Ive never used a cold air type intake on a older car, but when I built my last Oldsmobile engine I filled the exhaust crossovers in the cylinder heads with aluminum so the hot exhuast can no longer run under the intake and warm the intake. Long story short, it made a huge difference especially after a long freeway run. __________________ No, Its not a 454

03-01-2003, 03:06 AM	#10
O'l Buck Recovering Truck Driver Join Date: Mar 2002 Location: Orleans, NE USA Posts: 1,883	Yes, cold air is better, that's the reason all the HD diesel manufactures are using air to air aftercooling instead of air to water these days. Major difference in boost pressure and performance. __________________ 67 K-20 350, SM465, Eaton rear, 4.56 no spin option 00 Dodge 2500 4x4, 24V cummins, 5 speed Chad South Central Nebraska



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