The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Post your 60-66 craigslist finds

Dannny B · 06-11-2017, 12:07 PM

The advantage of the firewall mounted booster over the hydravac booster was; you didn't need 2 hydravacs to have a split system. The dual master cylinder arrangement was first seen on school buses. You see a lot of old F***s with 2 hydravacs.
Some of the Airstream trailers came with a vacuum brake booster on the trailer. Incredible as it may seem; you plug in your trailer electrical connectors and THEN, you plug in the vacuum hose from the engine.
If you're going to pull the Silver Streak a lot, I would suggest installing an aluminum cover on the diff to cool it down. I have a D***e D-250 that sees a lot of trailers. I have to change the oil in the diff fairly regularly.

06-11-2017, 12:07 PM	#132
Dannny B Registered User Join Date: Nov 2016 Location: Van Nuys, California Posts: 186	Re: Post your 60-66 craigslist finds The advantage of the firewall mounted booster over the hydravac booster was; you didn't need 2 hydravacs to have a split system. The dual master cylinder arrangement was first seen on school buses. You see a lot of old F*s with 2 hydravacs. Some of the Airstream trailers came with a vacuum brake booster on the trailer. Incredible as it may seem; you plug in your trailer electrical connectors and THEN, you plug in the vacuum hose from the engine. If you're going to pull the Silver Streak a lot, I would suggest installing an aluminum cover on the diff to cool it down. I have a D*e D-250 that sees a lot of trailers. I have to change the oil in the diff fairly regularly.