Cold air intake to carby - The 1947 - Present Chevrolet & GMC Truck Message Board Network

jdaley · 12-31-2009, 03:38 AM

I am wondering whether there will be an advantage to connect the air filter snout to a fixture on the front radiator support to stream cold air to the carby.
Has anybody done this in the hotter climate areas and seen a benefit?

79gmcc15 · 12-31-2009, 05:17 AM

there are some people here who have that set up. some have it so that it is a dual feed because there is another opening on the driver side. you can fab one up with two stock filter housing or buy one in the after market. I don't think in warmer climates you will be getting colder air into the carb. I think it has more to do with denseness of air. which has a lot to do with why ram air and the like are popular. it sure does look cool set up with two lines. .... side question, what is a "Tray"?

jdaley · 12-31-2009, 05:49 AM

We have utes which generally are derived from a sedan bodied car. To certain extent the Japs have created Cab chassis apon which is built either a pressed 'ute' body or an aluminium or steel fabricated flat tray, sometimes with drop sides.

79gmcc15 · 12-31-2009, 06:39 AM

So you have a 77 Chevy flat bed with drop down sides? Did I read you right? Have You put up pics of your rigs?

jdaley · 12-31-2009, 08:15 AM

Thats right.
I shall do the photos when I get back to Melbourne, I am in Sydney for a few days.

79gmcc15 · 12-31-2009, 03:29 PM

Quote:

Originally Posted by jdaley

Thats right.
I shall do the photos when I get back to Melbourne, I am in Sydney for a few days.

Awesome! Have a safe new years buddy!

Adams74Chevy · 12-31-2009, 03:48 PM

Quote:

Originally Posted by 79gmcc15

So you have a 77 Chevy flat bed with drop down sides? Did I read you right? Have You put up pics of your rigs?

So then I have a US custom made "tray"?

OJOE · 01-01-2010, 02:24 PM

Don't know if it helped but this is what i did on my 5.3

85Bowtie · 01-02-2010, 12:39 AM

Actually yes I have, but not on a Chevy, on my old Mopar cop car. Don't bash me for posting a Mopar pic either...

I've noticed a small difference on the interstate, none really driving around town.

jdaley · 01-02-2010, 03:39 AM

Looks good.
Bow tie what sort of difference did you notice? Better fuel econmy?

85Bowtie · 01-02-2010, 04:45 PM

Quote:

Originally Posted by jdaley

Looks good.
Bow tie what sort of difference did you notice? Better fuel econmy?

Thanks, most of what I noticed is crisper throttle response once at highway speeds, better/smoother acceleration and runs a little better/smoother on the highway. Again it's not like it's night and day difference, I can tell because I drive it so often. It would need alot more done to the engne to really need the air induction, but I had a spare Saturday and was bored.....

Haven't really checked MPG gains, speedo cable needs to be replaced, but I use it for a winter beater and drive the same mileage everyday, so I would guess somewhere between 18-20 mpg which is close to what I was getting when the speedo still worked and I could reference it.

*78 Chevyrado* · 01-02-2010, 04:43 AM

Biggest advantage to ANY cold air system, even a stock one snout one, is your engine gets cooler air instead of the hot air out of the radiator and generally off the engine. really don't even have to ram-air it to get some improvement. the improvements will be more noticable in the summer though.

I had the stock setup on my old 77 back when I was like 16 and i thought it looked crappy so i went and bought one of those slick edelbrock chrome 14" air cleaners. well it took about 3 tanks of gas to figure out my mileage went down, so i put the old stock setup back on it and then i had more cigarette and gas money...lol

thirdstreettito · 01-02-2010, 11:37 AM

http://www.ramairbox.com/

ToughBowtieTruck · 01-02-2010, 05:08 PM

Also another difference is the location of the filter element. Sitting on top of the engine leads to a natural "heater" of sorts for the air stream.

Having it near the fender reduces heat, as the newer engines adopted this setup.

The other advantage of the air piping, is the "forced induction" at higher speeds. Cooler air is being "forced" into the engine by the natural driving rather than having the engine suck up the neutral or hot air blowing around randomly in the engine compartment.

slugish · 01-02-2010, 09:39 PM

don't know if you saw mine or not on another post day or 2 ago .

seemed to be a very slight gain in warmer weather , but no noticeable difference in colder weather , especially now in this part of the country 19 degrees now. In fact iHAVE DEVELOPED an off idle stumble when its cold out . Ramair recommends you use your standard air filter when it gets in the 30's . My experience says they are right .

jdaley · 01-03-2010, 03:38 AM

We have between 80 -115 degrees in Melbourne at the monet. 19 would be "cut your wrist' type weather over here.
We would not know how to cope.
Thanks for the heads up also about shifting the aircleaner, that should be easy to achieve, regards

gchemist · 01-04-2010, 03:14 AM

I can prove it works. Better gas milage and power. I've yet to top out on speed. Cold weather is a little trouble. The carb takes longer to warm up. Just opening the hood is enought to get people asking questions.

jdaley · 01-04-2010, 04:59 AM

Where do the double entry air cleaner assemblies come from please ?

chevymotocross · 01-04-2010, 10:52 AM

I've been running an open element on my TBI all year. Now that it is cold here in Connecticut (35 or bellow), I notice the open element actually works awesome. In the summer time, I never really noticed a power increase, probably because of the hotter air. But I think in this case, it's quantity over quality. I will have to try a stock element and two intake hoses this summer.

gchemist · 01-04-2010, 08:35 PM

Fuel injection motors benefit more from the cold ram air intake.

We know intercoolers work. We know blowers, turbos and superchargers work. So think of the setup as a prehistoric forced induction air system. I'm curious to know how much pressure is applied to the filter when a truck is moving 70 MPH. On my 81-82 modified bumper, the area for each intake is ~3.5"X9" or 31.5 sq/inches. Multiply by two = 63" sq/inches of area to push air into the carb.

12-31-2009, 03:38 AM	#1
jdaley Registered User Join Date: Dec 2009 Location: Melbourne, Australia Posts: 71	Cold air intake to carby I am wondering whether there will be an advantage to connect the air filter snout to a fixture on the front radiator support to stream cold air to the carby. Has anybody done this in the hotter climate areas and seen a benefit? __________________ John Daley Melbourne, Australia 1946 Chev Ute 1977 Chev Tray Road racing sidecars

12-31-2009, 05:17 AM	#2
79gmcc15 Gettin It One Pice At A Time Join Date: Oct 2004 Location: everett, washington Posts: 2,688	Re: Cold air intake to carby there are some people here who have that set up. some have it so that it is a dual feed because there is another opening on the driver side. you can fab one up with two stock filter housing or buy one in the after market. I don't think in warmer climates you will be getting colder air into the carb. I think it has more to do with denseness of air. which has a lot to do with why ram air and the like are popular. it sure does look cool set up with two lines. .... side question, what is a "Tray"? __________________ RIP ELJAY Work In Progress 1979 GMC C1500 Trailering Special. Getting the truck done, one piece at a time. “You can tell a lot about a fellow’s character by his way of eating jellybeans.”Ronald Reagan “I don’t know the key to success but I know the key to failure is trying to please everybody.” Bill Cosby

12-31-2009, 05:49 AM	#3
jdaley Registered User Join Date: Dec 2009 Location: Melbourne, Australia Posts: 71	Re: Cold air intake to carby We have utes which generally are derived from a sedan bodied car. To certain extent the Japs have created Cab chassis apon which is built either a pressed 'ute' body or an aluminium or steel fabricated flat tray, sometimes with drop sides. __________________ John Daley Melbourne, Australia 1946 Chev Ute 1977 Chev Tray Road racing sidecars

12-31-2009, 06:39 AM	#4
79gmcc15 Gettin It One Pice At A Time Join Date: Oct 2004 Location: everett, washington Posts: 2,688	Re: Cold air intake to carby So you have a 77 Chevy flat bed with drop down sides? Did I read you right? Have You put up pics of your rigs? __________________ RIP ELJAY Work In Progress 1979 GMC C1500 Trailering Special. Getting the truck done, one piece at a time. “You can tell a lot about a fellow’s character by his way of eating jellybeans.”Ronald Reagan “I don’t know the key to success but I know the key to failure is trying to please everybody.” Bill Cosby Last edited by 79gmcc15; 12-31-2009 at 06:40 AM.

12-31-2009, 08:15 AM	#5
jdaley Registered User Join Date: Dec 2009 Location: Melbourne, Australia Posts: 71	Re: Cold air intake to carby Thats right. I shall do the photos when I get back to Melbourne, I am in Sydney for a few days. __________________ John Daley Melbourne, Australia 1946 Chev Ute 1977 Chev Tray Road racing sidecars

01-01-2010, 02:24 PM	#8
OJOE Crew Cut Join Date: Dec 2005 Location: MONTGOMERY,AL Posts: 757	Re: Cold air intake to carby Don't know if it helped but this is what i did on my 5.3 Attached Images __________________ 85 SWB 1/2 TON CREWCAB/5.3 03 CHEV 3500 DURAMAX CREW CAB 85 CHEV SWB/TPI 06 CHEV TAHOE (WIFES) 30 MODEL A HOT ROD 07 HARLEY DAVIDSON BAGGER 09 STREET GLIDE AN D A LOT MORE JUNK

01-02-2010, 12:39 AM	#9
85Bowtie Registered User Join Date: Mar 2009 Location: TN Posts: 410	Re: Cold air intake to carby Actually yes I have, but not on a Chevy, on my old Mopar cop car. Don't bash me for posting a Mopar pic either... I've noticed a small difference on the interstate, none really driving around town. Attached Images __________________ '69 Dodge Charger R/T 440, 727, 3.55 Sure Grip '68 Plymouth Road Runner 383, 727, 3.23 Sure Grip '89 Dodge Diplomat ex cop car 408, 727, 3.55 Sure Grip '77 Dodge Monaco ex cop car 440, 727, 2.71 '79 Dodge 'Lil Red Express pickup 360, 727, 3.55 Sure Grip '12 Dodge Challenger SRT8 392, M6, 3.92 '85 Chevrolet C-10 SWB 2wd 305, TH350, 2.73 Last edited by 85Bowtie; 01-02-2010 at 12:40 AM.

01-02-2010, 03:39 AM	#10
jdaley Registered User Join Date: Dec 2009 Location: Melbourne, Australia Posts: 71	Re: Cold air intake to carby Looks good. Bow tie what sort of difference did you notice? Better fuel econmy? __________________ John Daley Melbourne, Australia 1946 Chev Ute 1977 Chev Tray Road racing sidecars

01-02-2010, 04:43 AM	#12
78 Chevyrado Account Suspended Join Date: Dec 2007 Location: Unnapreciative, Trollville Posts: 2,079	Re: Cold air intake to carby Biggest advantage to ANY cold air system, even a stock one snout one, is your engine gets cooler air instead of the hot air out of the radiator and generally off the engine. really don't even have to ram-air it to get some improvement. the improvements will be more noticable in the summer though. I had the stock setup on my old 77 back when I was like 16 and i thought it looked crappy so i went and bought one of those slick edelbrock chrome 14" air cleaners. well it took about 3 tanks of gas to figure out my mileage went down, so i put the old stock setup back on it and then i had more cigarette and gas money...lol

01-02-2010, 11:37 AM	#13
thirdstreettito Resident of Here Join Date: May 2008 Location: Wesley Chapel, FL, USA Posts: 7,716	Re: Cold air intake to carby http://www.ramairbox.com/ __________________ ~Bradley~ 2004 Black GTO LS2/T56 too much to list Miss having a truck

01-02-2010, 05:08 PM	#14
ToughBowtieTruck Registered User Join Date: Dec 2009 Location: MI Posts: 111	Re: Cold air intake to carby Also another difference is the location of the filter element. Sitting on top of the engine leads to a natural "heater" of sorts for the air stream. Having it near the fender reduces heat, as the newer engines adopted this setup. The other advantage of the air piping, is the "forced induction" at higher speeds. Cooler air is being "forced" into the engine by the natural driving rather than having the engine suck up the neutral or hot air blowing around randomly in the engine compartment.

01-02-2010, 09:39 PM	#15
slugish Slugish Join Date: Jan 2005 Location: Earlysville, Va. Posts: 1,024	Re: Cold air intake to carby don't know if you saw mine or not on another post day or 2 ago . seemed to be a very slight gain in warmer weather , but no noticeable difference in colder weather , especially now in this part of the country 19 degrees now. In fact iHAVE DEVELOPED an off idle stumble when its cold out . Ramair recommends you use your standard air filter when it gets in the 30's . My experience says they are right .

01-03-2010, 03:38 AM	#16
jdaley Registered User Join Date: Dec 2009 Location: Melbourne, Australia Posts: 71	Re: Cold air intake to carby We have between 80 -115 degrees in Melbourne at the monet. 19 would be "cut your wrist' type weather over here. We would not know how to cope. Thanks for the heads up also about shifting the aircleaner, that should be easy to achieve, regards __________________ John Daley Melbourne, Australia 1946 Chev Ute 1977 Chev Tray Road racing sidecars

01-04-2010, 03:14 AM	#17
gchemist BAD BOW-Silverado XST Join Date: May 2000 Location: Senior Member from Austin, TX Posts: 6,431	Re: Cold air intake to carby I can prove it works. Better gas milage and power. I've yet to top out on speed. Cold weather is a little trouble. The carb takes longer to warm up. Just opening the hood is enought to get people asking questions. __________________ Gerardo a.k.a. Mad Chemist Silverado XST videos

01-04-2010, 04:59 AM	#18
jdaley Registered User Join Date: Dec 2009 Location: Melbourne, Australia Posts: 71	Re: Cold air intake to carby Where do the double entry air cleaner assemblies come from please ? __________________ John Daley Melbourne, Australia 1946 Chev Ute 1977 Chev Tray Road racing sidecars Last edited by jdaley; 01-04-2010 at 05:00 AM.



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01-04-2010, 10:52 AM	#19
chevymotocross Registered User Join Date: May 2007 Location: East Haven, CT Posts: 882	Re: Cold air intake to carby I've been running an open element on my TBI all year. Now that it is cold here in Connecticut (35 or bellow), I notice the open element actually works awesome. In the summer time, I never really noticed a power increase, probably because of the hotter air. But I think in this case, it's quantity over quality. I will have to try a stock element and two intake hoses this summer. __________________ 87 Chevy 2wd SWB: 305/700r4 Dual Exhaust, K&N Filter, Injector Pod Spacer, TBI Spacer, Belltech Front Sway Bar, Corvette Servo, Western Chassis 4/6 and c-notch

01-04-2010, 08:35 PM	#20
gchemist BAD BOW-Silverado XST Join Date: May 2000 Location: Senior Member from Austin, TX Posts: 6,431	Re: Cold air intake to carby Fuel injection motors benefit more from the cold ram air intake. We know intercoolers work. We know blowers, turbos and superchargers work. So think of the setup as a prehistoric forced induction air system. I'm curious to know how much pressure is applied to the filter when a truck is moving 70 MPH. On my 81-82 modified bumper, the area for each intake is ~3.5"X9" or 31.5 sq/inches. Multiply by two = 63" sq/inches of area to push air into the carb. __________________ Gerardo a.k.a. Mad Chemist Silverado XST videos

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