Can I use a 1/2 ton brake booster on a 1 ton? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

pat565 · 12-26-2011, 04:22 PM

I have the original booster and m/c assembly from my half ton project, and would like to know if I can use it on my 67 1 ton that I am swapping the rear diff and front suspension from a 87 1 ton.
Or should I just use the hydroboost assembly?

Thanks for any input

Pat

SCOTI · 12-26-2011, 08:51 PM

They used vacuum assisted brakes on the big trucks before changing to hydaboost. The big difference in vacuum boosters are the over-all diameter & diaphragm quantity.

So, the 1/2 ton booster/mc assembly will increase the pedal pressure vs non-power brakes but it won't be comparable to a HB set-up. Whether that's good or bad is dependant on several factors (presonal preference being a main one).

If anything, the mc needs to be sized based on the caliper & drum piston volume so it needs to be for a HD 3/4 ton Burb/truck.

pat565 · 12-26-2011, 09:32 PM

Thanks for the input.

I think I might just go and salvage the parts for the hydroboost off the wreck in the backyard. It's good that I haven't hauled it away yet.

I will say that I hate the way they (GM) mounted the front brake calipers on the 87 donor truck. They won't fall off, but what a pain to blow apart!

12-26-2011, 04:22 PM	#1
pat565 Registered User Join Date: Jun 2011 Location: Wembley, Ab Posts: 53	Can I use a 1/2 ton brake booster on a 1 ton? I have the original booster and m/c assembly from my half ton project, and would like to know if I can use it on my 67 1 ton that I am swapping the rear diff and front suspension from a 87 1 ton. Or should I just use the hydroboost assembly? Thanks for any input Pat

12-26-2011, 08:51 PM	#2
SCOTI Registered User Join Date: Apr 2001 Location: DALLAS,TX Posts: 22,064	Re: Can I use a 1/2 ton brake booster on a 1 ton? They used vacuum assisted brakes on the big trucks before changing to hydaboost. The big difference in vacuum boosters are the over-all diameter & diaphragm quantity. So, the 1/2 ton booster/mc assembly will increase the pedal pressure vs non-power brakes but it won't be comparable to a HB set-up. Whether that's good or bad is dependant on several factors (presonal preference being a main one). If anything, the mc needs to be sized based on the caliper & drum piston volume so it needs to be for a HD 3/4 ton Burb/truck. __________________ 67SWB-B.B.RetroRod 64SWB-Recycle 89CCDually-Driver/Tow Truck 99CCSWB Driver All Fleetsides @rattlecankustoms in IG Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive. It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar..... *Cubic inches is like Indiana Jones with a cheap pistol.*

12-26-2011, 09:32 PM	#3
pat565 Registered User Join Date: Jun 2011 Location: Wembley, Ab Posts: 53	Re: Can I use a 1/2 ton brake booster on a 1 ton? Thanks for the input. I think I might just go and salvage the parts for the hydroboost off the wreck in the backyard. It's good that I haven't hauled it away yet. I will say that I hate the way they (GM) mounted the front brake calipers on the 87 donor truck. They won't fall off, but what a pain to blow apart!



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