Power Brakes Conversion - The 1947 - Present Chevrolet & GMC Truck Message Board Network

BobM · 07-07-2002, 07:31 PM

Does anyone know which years of GM trucks or cars are compatible with 71 1/2ton brake system? Want to upgrade from manual to power brakes with parts off a doner truck or car. Running a 305/700R4 combination with a quadrajet carb.

Don Smith · 07-07-2002, 09:19 PM

Up to 1980 chevy truck should work , don't know about car interchangeability.

6869704X4 · 07-07-2002, 10:55 PM

I tried a booster off of a 74 on my 70 and the shifter hit it keeping it from going into park. I guess if you have a floor shift it may work. Six holes in the 74 bracket but four of them line up with the cab holes. Thats as far as I got. Once I realized the shifter hit I bit the bullet and bought one from the parts store.

chevyman 68 C/10 · 07-08-2002, 12:15 AM

Hard to beat the price of a booster master cyl. combo from a parts store with a life time garantee. 71-72 fits - but if you find a donor im pretty sure you can use a 67-72 if you take the master cyl. also.

Nothing beats stepping on the brake and it stops. New brakes are really the way to go

Longhorn Man · 07-08-2002, 12:23 AM

Quote:

Originally posted by chevyman 68 C/10
im pretty sure you can use a 67-72 if you take the master cyl. also.

Nope. Disc/drum is not the same as drum/drum set ups.
The only 100% bolt on that i know of, would be the 71 and 72.

07-07-2002, 07:31 PM	#1
BobM Registered User Join Date: Feb 2001 Location: Winnipeg, MB, Canada Posts: 73	Power Brakes Conversion Does anyone know which years of GM trucks or cars are compatible with 71 1/2ton brake system? Want to upgrade from manual to power brakes with parts off a doner truck or car. Running a 305/700R4 combination with a quadrajet carb.

07-07-2002, 09:19 PM	#2
Don Smith Registered User Join Date: Jul 2000 Location: Hampton, Ga, USA Posts: 217	Up to 1980 chevy truck should work , don't know about car interchangeability. __________________ 68 Short Stepside, 350, quadrajet, 700r4, 3:73 posi, power front discs, HEI, Factory Air, Tilt, Tach, accelerator cable instead of rod, sway bar. 96 Impala SS 97 Monte Carlo

07-07-2002, 10:55 PM	#3
6869704X4 Registered User Join Date: Jul 2002 Location: SE NM Posts: 769	I tried a booster off of a 74 on my 70 and the shifter hit it keeping it from going into park. I guess if you have a floor shift it may work. Six holes in the 74 bracket but four of them line up with the cab holes. Thats as far as I got. Once I realized the shifter hit I bit the bullet and bought one from the parts store. __________________ The more I learn about women, the more I love my truck.

07-08-2002, 12:15 AM	#4
chevyman 68 C/10 Registered User Join Date: Feb 2002 Location: Gilmer, Texas USA Posts: 313	Hard to beat the price of a booster master cyl. combo from a parts store with a life time garantee. 71-72 fits - but if you find a donor im pretty sure you can use a 67-72 if you take the master cyl. also. Nothing beats stepping on the brake and it stops. New brakes are really the way to go __________________ 69 Chevy short fleet side soon to have LT1 and 4L60E pb. ps cruise and air. 68 Chevy short fleet side 400 sb 5 inch chop top pb. ps. pw. 350 auto and shaved handles 68 anniversary no engine long wheel base 400 auto FOR SALE 68 Chevy fleet side long wheel base complete parts truck.



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