Author Topic: 78 hydroboost brakes to 85 brake booster  (Read 2549 times)

Offline aussie

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78 hydroboost brakes to 85 brake booster
« on: August 10, 2009, 06:48:32 PM »
will a 85 brake booster  fit my 78 c10 where the hydro was?? what do i need???
 thanks

Offline aussie

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Re: 78 hydroboost brakes to 85 brake booster
« Reply #1 on: August 11, 2009, 06:26:39 PM »
anyone?

Offline Captkaos

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Re: 78 hydroboost brakes to 85 brake booster
« Reply #2 on: August 11, 2009, 06:34:35 PM »
Fit, yes. but you will be missing 2 of the mounting bolts for the diaphragm setup and you would need the booster and the rod.

Offline ccz145a

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Re: 78 hydroboost brakes to 85 brake booster
« Reply #3 on: August 12, 2009, 07:00:51 AM »
And the hydro boost pedal to rod pin is in a different location so you'll need a pedal from a vacuum boost truck. This will give you the right presure and eliminate the return spring that the vacuum system does not like.
1975 C10 Silverado LWB, 454CID, TH400, 10bolt 3.42
11MPG Downhill w/tailwind (but there ain't no hills here)

Offline aussie

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Re: 78 hydroboost brakes to 85 brake booster
« Reply #4 on: August 13, 2009, 07:40:10 PM »
thanks for the info !!!!