Mystery modification! - The 1947 - Present Chevrolet & GMC Truck Message Board Network

gchemist · 06-19-2008, 06:46 PM

I started work on a mystery modification. I only had my cell phone for pictures. Here is a tease picture.

I'll post the rest after it's complete. Hopefully tomorrow!

Bamm · 06-20-2008, 12:23 PM

Some kind of Forced air induction maybe?

trailwart · 06-20-2008, 12:49 PM

i had 1 of those ram air setups on a cavalier years ago and loved it. plain jane cavi 2.2 5 speed no ac ran valvoline and always put a couple ounces of PF201 in it and would get about 48mpg on the hway. installed the ram air and picked up some more pep at speed and cruising on hway mpg's jumped up to 51-53 mpg. let me know how it works out for you

gchemist · 06-20-2008, 03:17 PM

Stealth ram air intake for the 4.3.
What ya think?

I finished the installation today. I'm driving nearly 150 miles this afternoon. I should get a good feel on how it works. I hope to increase city MPG to 19+. The Jimmy averages 18.5 MPG since PCM programming.

The snorkel costs $17.50 at a local performance shop. I had to buy some 3" hose clamps. Everything else was sitting in my garage. The black hose is actually race quality brake cooling hose. I used it on my 83 Chevy ram air intake too.

trailwart · 06-20-2008, 06:35 PM

i know from my cavi that i noticed having to give less throttle at highway speeds.

trailwart · 06-21-2008, 12:13 AM

pm sent

gchemist · 06-21-2008, 09:19 AM

trailwart,
Thanks for the PM.

Yes, I noticed less throttle on the highway too. It does accellerate better too. It revs past 5000 really easy. I'll keep posting updates.

BarryB · 06-21-2008, 08:32 PM

Is your 4.3 throttle body?? I couldn't tell much from the pics. There were to small.

gchemist · 06-22-2008, 11:47 AM

No TBI.

Here another option.
http://meticulous-s10.itgo.com/custom3.html

You can do the same with a TBI. It may take a little more or less work though. The modification was easy. The hardest part was removing the air dam. I did not want to cut it while mounted.

BarryB · 06-22-2008, 06:19 PM

Yeah I was able to make them bigger, your working with something newer than mine. Mine is a 91 so it is TBI and just a regular round style air filter.I bet I could still make it work though.

gchemist · 06-22-2008, 08:50 PM

If you need an idea, checkout www.ramairbox.com The site has kit available for TBI trucks.

70c10 · 06-25-2008, 07:14 AM

I wonder if using smooth pipe would help flow with all the bends required? Did this mod trip the check engine light?

gchemist · 06-28-2008, 09:08 PM

A smooth pipe would be better. No the SES light has not turned on. I'm not halfway through the first tank since the modificaton. I can tell it has picked up a little milage.

Any modification that can lower air temperature helps.

Checkout this modification. Less work.

Simplest install with smooth pipe.

Here is a true extreme air induction modification.

Smooth hoses.

My city driving average speed is 35-45. A lot of freeway hopping on the interstate to reach some places. No block to block lights unless I go downtown.

06-19-2008, 06:46 PM	#1
gchemist BAD BOW-Silverado XST Join Date: May 2000 Location: Senior Member from Austin, TX Posts: 6,431	Mystery modification! I started work on a mystery modification. I only had my cell phone for pictures. Here is a tease picture. I'll post the rest after it's complete. Hopefully tomorrow! __________________ Gerardo a.k.a. Mad Chemist Silverado XST videos

06-20-2008, 12:23 PM	#2
Bamm Cowboy Fan for Life!!!!!! Join Date: Apr 2002 Location: Amelia, Virginia Posts: 2,921	Re: Mystery modification! Some kind of Forced air induction maybe? __________________ 1967 ShortBed Fleetside 3/4 Drop 350/700R4 Tilt wheel 18 x 8 Torque Thrust II's Future mods: All new gauges & wood bed My Zip is 23002 I ship UPS, USPS

06-20-2008, 12:49 PM	#3
trailwart Registered User Join Date: Mar 2003 Location: michigan Posts: 356	Re: Mystery modification! i had 1 of those ram air setups on a cavalier years ago and loved it. plain jane cavi 2.2 5 speed no ac ran valvoline and always put a couple ounces of PF201 in it and would get about 48mpg on the hway. installed the ram air and picked up some more pep at speed and cruising on hway mpg's jumped up to 51-53 mpg. let me know how it works out for you __________________ 72 chevy 3\4 ton 4 speed 4x4 84 1\2 ton 4x4 (gone but not forgotten, thanks for the memories) 1999 suburban 4x4 1982 chevrolet S-10 V-8 (Thanks uncle EARL)

06-20-2008, 03:17 PM	#4
gchemist BAD BOW-Silverado XST Join Date: May 2000 Location: Senior Member from Austin, TX Posts: 6,431	Re: Mystery modification! Stealth ram air intake for the 4.3. What ya think? I finished the installation today. I'm driving nearly 150 miles this afternoon. I should get a good feel on how it works. I hope to increase city MPG to 19+. The Jimmy averages 18.5 MPG since PCM programming. The snorkel costs $17.50 at a local performance shop. I had to buy some 3" hose clamps. Everything else was sitting in my garage. The black hose is actually race quality brake cooling hose. I used it on my 83 Chevy ram air intake too.

06-20-2008, 06:35 PM	#5
trailwart Registered User Join Date: Mar 2003 Location: michigan Posts: 356	Re: Mystery modification! i know from my cavi that i noticed having to give less throttle at highway speeds. __________________ 72 chevy 3\4 ton 4 speed 4x4 84 1\2 ton 4x4 (gone but not forgotten, thanks for the memories) 1999 suburban 4x4 1982 chevrolet S-10 V-8 (Thanks uncle EARL)

06-21-2008, 12:13 AM	#6
trailwart Registered User Join Date: Mar 2003 Location: michigan Posts: 356	Re: Mystery modification! pm sent __________________ 72 chevy 3\4 ton 4 speed 4x4 84 1\2 ton 4x4 (gone but not forgotten, thanks for the memories) 1999 suburban 4x4 1982 chevrolet S-10 V-8 (Thanks uncle EARL)

06-21-2008, 09:19 AM	#7
gchemist BAD BOW-Silverado XST Join Date: May 2000 Location: Senior Member from Austin, TX Posts: 6,431	Re: Mystery modification! trailwart, Thanks for the PM. Yes, I noticed less throttle on the highway too. It does accellerate better too. It revs past 5000 really easy. I'll keep posting updates. __________________ Gerardo a.k.a. Mad Chemist Silverado XST videos

06-21-2008, 08:32 PM	#8
BarryB Senior Member Join Date: Jul 2006 Location: Blountville, Tn. Posts: 3,904	Re: Mystery modification! Is your 4.3 throttle body?? I couldn't tell much from the pics. There were to small. __________________ We could learn a lot from crayons... Some are sharp; some are pretty;and some are dull. Some have weird names; and all are different colours;but they all have to live in the same box. You may be only one person in the world, But you may also be the world to one person. * Some mistakes are too much fun to only make once. Two rules in life. 1. Never sweat the small stuff! 2. Everything is small stuff! Last edited by BarryB; 06-21-2008 at 08:33 PM.

06-22-2008, 11:47 AM	#9
gchemist BAD BOW-Silverado XST Join Date: May 2000 Location: Senior Member from Austin, TX Posts: 6,431	Re: Mystery modification! No TBI. Here another option. http://meticulous-s10.itgo.com/custom3.html You can do the same with a TBI. It may take a little more or less work though. The modification was easy. The hardest part was removing the air dam. I did not want to cut it while mounted.

06-22-2008, 06:19 PM	#10
BarryB Senior Member Join Date: Jul 2006 Location: Blountville, Tn. Posts: 3,904	Re: Mystery modification! Yeah I was able to make them bigger, your working with something newer than mine. Mine is a 91 so it is TBI and just a regular round style air filter.I bet I could still make it work though. __________________ We could learn a lot from crayons... Some are sharp; some are pretty;and some are dull. Some have weird names; and all are different colours;but they all have to live in the same box. You may be only one person in the world, But you may also be the world to one person. * Some mistakes are too much fun to only make once. Two rules in life. 1. Never sweat the small stuff! 2. Everything is small stuff!

06-22-2008, 08:50 PM	#11
gchemist BAD BOW-Silverado XST Join Date: May 2000 Location: Senior Member from Austin, TX Posts: 6,431	Re: Mystery modification! If you need an idea, checkout www.ramairbox.com The site has kit available for TBI trucks. __________________ Gerardo a.k.a. Mad Chemist Silverado XST videos

06-25-2008, 07:14 AM	#12
70c10 67-72 Addict! Join Date: Feb 2002 Location: The TAX State! Posts: 7,856	Re: Mystery modification! I wonder if using smooth pipe would help flow with all the bends required? Did this mod trip the check engine light? __________________ 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

06-28-2008, 09:08 PM	#13
gchemist BAD BOW-Silverado XST Join Date: May 2000 Location: Senior Member from Austin, TX Posts: 6,431	Re: Mystery modification! A smooth pipe would be better. No the SES light has not turned on. I'm not halfway through the first tank since the modificaton. I can tell it has picked up a little milage. Any modification that can lower air temperature helps. Checkout this modification. Less work. Simplest install with smooth pipe. Here is a true extreme air induction modification. Smooth hoses. My city driving average speed is 35-45. A lot of freeway hopping on the interstate to reach some places. No block to block lights unless I go downtown. Last edited by gchemist; 06-28-2008 at 09:15 PM.



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