The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Firewall feedthrough for brake booster arm.

elbert · 04-26-2021, 07:03 AM

I've uprgaded to dual circuit brakes with a brake booster on my 1965 C20. Works great, but I get a lot of fumes into the cab. The rubber attached to the booster doesn't reach all the way to the hole in the firewall. And even if it did it wouldn't have sealed the opening. Anyone have a good idea?

04-26-2021, 07:03 AM	#1
elbert Registered User Join Date: May 2013 Location: Norway Posts: 14	Firewall feedthrough for brake booster arm. I've uprgaded to dual circuit brakes with a brake booster on my 1965 C20. Works great, but I get a lot of fumes into the cab. The rubber attached to the booster doesn't reach all the way to the hole in the firewall. And even if it did it wouldn't have sealed the opening. Anyone have a good idea?