Intake to Booster Hose - The 1947 - Present Chevrolet & GMC Truck Message Board Network

1bad396ss · 09-26-2016, 11:13 PM

What hose (part number or size) is required to run from the truck intake 2003 4.8L to the vacuum booster (CPP)?

Is there a specific hose that fits nicely or will a generic size be required?

I don't have the factory hose of the donor vehicle.

Nodnarb76 · 10-04-2016, 11:57 AM

When I was doing my swap (LQ4 into 87 Suburban) My nipple on the motor was a little different in size than the nipple on my brake booster. I had to get two pieces of hose and a brass barbed adapter from Home Depot to make it work.
I'm sorry I can't remember what size the hoses or the adapter was.

SBTork · 10-17-2016, 10:46 PM

I can't remember the part number but I called a local chevy dealer and had them order me the correct part for an '06 Silverado with a V8. Worked perfectly on my '85 Suburban with a 5.3 from an '05 Avalanche. Also had them order me the correct nipple too, I think it was less than $30 for both pieces. Worth the money and way better looking than piecing something together IMO

72MARIO · 10-18-2016, 08:00 AM

I had the same problem. Ended up using 2002 gmc Yukon Denali hose and fitting. The 2003 Z71 4x4 was to small

09-26-2016, 11:13 PM	#1
1bad396ss Registered User Join Date: Jul 2012 Location: STL MO Posts: 85	Intake to Booster Hose What hose (part number or size) is required to run from the truck intake 2003 4.8L to the vacuum booster (CPP)? Is there a specific hose that fits nicely or will a generic size be required? I don't have the factory hose of the donor vehicle.

10-04-2016, 11:57 AM	#2
Nodnarb76 Registered User Join Date: May 2013 Location: Mississippi Posts: 501	Re: Intake to Booster Hose When I was doing my swap (LQ4 into 87 Suburban) My nipple on the motor was a little different in size than the nipple on my brake booster. I had to get two pieces of hose and a brass barbed adapter from Home Depot to make it work. I'm sorry I can't remember what size the hoses or the adapter was. __________________ 1987 R20 Suburban LQ4/4L80e swap: http://67-72chevytrucks.com/vboard/s...d.php?t=693824

10-17-2016, 10:46 PM	#3
SBTork Garage wrench Join Date: Feb 2008 Location: LaCrosse, WI Posts: 1,855	Re: Intake to Booster Hose I can't remember the part number but I called a local chevy dealer and had them order me the correct part for an '06 Silverado with a V8. Worked perfectly on my '85 Suburban with a 5.3 from an '05 Avalanche. Also had them order me the correct nipple too, I think it was less than $30 for both pieces. Worth the money and way better looking than piecing something together IMO __________________ -Adam 90 V1500 GMC Suburban 350/700R4/NP241..... 01 Saturn SL1 stock DD.....

10-18-2016, 08:00 AM	#4
72MARIO Registered User Join Date: Nov 2000 Location: Huntsville Ontario Canada Posts: 4,051	Re: Intake to Booster Hose I had the same problem. Ended up using 2002 gmc Yukon Denali hose and fitting. The 2003 Z71 4x4 was to small __________________ 1968 Suburban numbers matching all original truck now equipped with 6.0/4L80 on Accuair http://67-72chevytrucks.com/vboard/s...d.php?t=625017 1967 C/20 6.0/4L80 Roofing Truck 1990 V2500 Suburban "Plow Truck" 2005 TAHOE DD

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