The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Need to Know Factory Vacuum Hose Setup For My Delco Brake Booster

**kwmech** · 01-14-2021, 05:53 PM

ANDY----I'd replace that fitting in the manifold and get a brass 90 degree fitting in 3/8'', change the hose to an 11/32 like the factory has along with an updated filter inline. The filter is a brake booster filter---supposed to keep gasoline vapors from getting to the rubber diaphragm in the booster. Running the hose you have there through the 1/4'' nipple for the automatic is a no bueno

01-14-2021, 05:53 PM	#4
kwmech Senior Member Join Date: Mar 2003 Location: Colfax-California Posts: 8,391	Re: Need to Know Factory Vacuum Hose Setup For My Delco Brake Booster ANDY----I'd replace that fitting in the manifold and get a brass 90 degree fitting in 3/8'', change the hose to an 11/32 like the factory has along with an updated filter inline. The filter is a brake booster filter---supposed to keep gasoline vapors from getting to the rubber diaphragm in the booster. Running the hose you have there through the 1/4'' nipple for the automatic is a no bueno