Serpentine Q - The 1947 - Present Chevrolet & GMC Truck Message Board Network

my new 72 · 02-09-2006, 07:08 PM

Hey guys, I just got a serpentine system from a 1991 siverado. My question is, what do I do about the spot where the smog pump was. Can I run it W/O it just like it is, or do I need a delete pulley for that spot?

formula_raider · 02-09-2006, 07:54 PM

I have a 92 Camaro serpentine setup on my 350. I had to get a smog pump delete pully to make everything work, they also have a A/C delete pully. The GM part number for the smog elimination pully is (10186167) and was about $48.00 from GM parts direct on the internet. I am almost sure that your truck serpentine setup is a little different than my Camaro one, so im not sure if that part number will work for your application. But im sure they make one. Give them a ring. Hope this helps.

gringoloco · 02-09-2006, 09:49 PM

Take a piece of rope, cloth tape, whatever, route it the path of the belt, see if it works. Useful for determining belt length too. -Chris

rauto13 · 02-09-2006, 11:01 PM

you should be able to get a belt for the donor truck, I believe that year came with or without the smog pump, try calling your local auto parts store.

Tx Firefighter · 02-10-2006, 07:44 AM

Remove the smog pump and leave the bracket there. Then buy a belt for a truck without smog pump. The new belt will bypass the smog pump location, going from the A/C compressor to the crank pulley. Lots of late 80's GM trucks came factory equipped with an empty AIR pump bracket and a belt running straight down across there.

my new 72 · 02-10-2006, 09:34 AM

Excellent to hear. Thank you TX.

Chris H · 02-10-2006, 10:52 AM

Here is a picture of the serp. setup from my 1990 K1500 without air pump. Note the idler pulley where the air pump would have been.

02-09-2006, 07:08 PM	#1
my new 72 faster, faster, faster Join Date: Dec 2001 Location: Houston ,Texas ,USA Posts: 1,354	Serpentine Q Hey guys, I just got a serpentine system from a 1991 siverado. My question is, what do I do about the spot where the smog pump was. Can I run it W/O it just like it is, or do I need a delete pulley for that spot? __________________ I'm going to Law School, wanna debate? It's good practice.

02-09-2006, 07:54 PM	#2
formula_raider Registered User Join Date: Nov 2005 Location: San Marcos, Tx Posts: 62	Re: Serpentine Q I have a 92 Camaro serpentine setup on my 350. I had to get a smog pump delete pully to make everything work, they also have a A/C delete pully. The GM part number for the smog elimination pully is (10186167) and was about $48.00 from GM parts direct on the internet. I am almost sure that your truck serpentine setup is a little different than my Camaro one, so im not sure if that part number will work for your application. But im sure they make one. Give them a ring. Hope this helps.

02-09-2006, 09:49 PM	#3
gringoloco A guy with a truck Join Date: Sep 2005 Location: Germany, for now Posts: 5,921	Re: Serpentine Q Take a piece of rope, cloth tape, whatever, route it the path of the belt, see if it works. Useful for determining belt length too. -Chris __________________ -Chris Instagram _elgringoloco_ '70 Short-Wide How to: Ruin a perfectly good C10 ‘70 Blazer ConversionHow To: Ruin a Perfectly Good 4wd '72 Highlander How To: Ruin a Perfectly Good K/5 (SOLD) '72 Blazer 2WD How to: Ruin a perfectly good Blazer (SOLD) '05 Yukon Daily Driven (not so stock) Yukon (SOLD) ‘07 Yukon Denali (daily) Members met list: SCOTI, darkhorse970, 67cheby, 67cheby'sGirl, klmore, porterbuilt, n2billet, Fastrucken, classicchev, Col Clank, GSFMECH, HuggerCST, Spray-Bomb, BACKYARD88, 5150, fine69, fatbass, smbrouss70, 65StreetCruiser, GAc10boy

02-09-2006, 11:01 PM	#4
rauto13 saving one more Join Date: Sep 2005 Location: Pryor Creek, Oklahoma Posts: 3,066	Re: Serpentine Q you should be able to get a belt for the donor truck, I believe that year came with or without the smog pump, try calling your local auto parts store. __________________ 72 Chevy longbed - now for parts 69 Chevy short fleet - needing some love 70 RS Camaro - needing more love driver - 96 GMC X-cab

02-10-2006, 07:44 AM	#5
Tx Firefighter Watch out for your cornhole ! Join Date: Jun 2003 Location: Azle, Texas Posts: 14,162	Re: Serpentine Q Remove the smog pump and leave the bracket there. Then buy a belt for a truck without smog pump. The new belt will bypass the smog pump location, going from the A/C compressor to the crank pulley. Lots of late 80's GM trucks came factory equipped with an empty AIR pump bracket and a belt running straight down across there. __________________ I'm on the Instagram- @Gearhead_Kevin

02-10-2006, 09:34 AM	#6
my new 72 faster, faster, faster Join Date: Dec 2001 Location: Houston ,Texas ,USA Posts: 1,354	Re: Serpentine Q Excellent to hear. Thank you TX. __________________ I'm going to Law School, wanna debate? It's good practice.

02-10-2006, 10:52 AM	#7
Chris H 72 C30 Trailer Queen Join Date: Dec 1999 Location: SE MN, USA Posts: 794	Re: Serpentine Q Here is a picture of the serp. setup from my 1990 K1500 without air pump. Note the idler pulley where the air pump would have been. __________________ Chris H 72 C30 133" 72 C30 157" flat-dump 69 C10 short fleet 71 ElCamino 2000 K2500 crewcab shortbed (sold, sorry old friend) 2005 GMC 2500HD shortcrew Duramax 2006 K1500 RCSB and a couple other projects/parts Last edited by Chris H; 02-10-2006 at 10:54 AM.



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