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#1 |
Registered User
![]() Join Date: Apr 2011
Location: Hartford CT
Posts: 223
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Power brake conversion
I want to convert my '80 with manual brakes over to vacuum power brakes. Do I need to swap a vacuum power brake pedal as well, or can I get away with my manual brake pedal for the time being?
I've also been looking at auto trans brake pedals - truck was originally a 3 on the tree - because when the truck was converted to a TH350 some time ago, the PO just took off the clutch pedal, so it looks kind of awkward with the small brake pedal. I'm wondering, is there's a difference in hydroboost vs. vacuum pedal ratios? Thanks!
__________________
-Steve ![]() 1980 GMC C15 Sierra LWB Dark Carmine Red/Carmine Int Was: 250/3spd (1980-88), then a 305/TH350 (1988-2011) Now: 5.3/4L60E, 2.73 12-bolt open rear |
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#2 |
Registered User
Join Date: Sep 2011
Location: Moriarty NewMexico
Posts: 5
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Re: Power brake conversion
Id find an auto pedal assembly from salvage and take the pedal assembly all the way to the master cylinder just to be safe....
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#3 |
Registered User
![]() Join Date: Apr 2011
Location: Hartford CT
Posts: 223
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Re: Power brake conversion
I already have a vacuum booster - a guy I bought some '80 parts from had a booster from another mid-80s square. The '80 that the parts came from was a manual-trans truck with vacuum power brakes, so I didn't want the pedal assembly because I want the big pedal for my auto trans. I have a line on an auto trans square with power brakes, but my buddy doesn't know yet if its vacuum or hydroboost, and I was wondering if there's even a difference in pedal ratios, or if I can just go ahead and have him yank it for me
__________________
-Steve ![]() 1980 GMC C15 Sierra LWB Dark Carmine Red/Carmine Int Was: 250/3spd (1980-88), then a 305/TH350 (1988-2011) Now: 5.3/4L60E, 2.73 12-bolt open rear |
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