Changing over to Power Brakes, do I need different lines??? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

ChevyDude · 10-26-2004, 07:10 PM

My truck came with manual disc brakes and I am hooking up the new power booster and Proportion valve....Will I need new pre bent brake lines or will the existing ones fit???

Help from the experts please!

*chevytruckfan* · 10-26-2004, 07:45 PM

No you dont need new lines. The ones you have will flex enough to pull the MC away from the firewall far enought to get the booster in there without having to disconnect any. Just make sure you have the longer push rod that connects the booster to the pedal and a new vacuum check valve.

67chev · 10-27-2004, 01:27 PM

Not questioning you chevytruckfan, but I heard that you have to go with the bigger lines ('71/'72 lines) on the front if you go with power brakes. This is, of course, for the guys like me with the '67-'70 trucks. Not sure what year ChevyDude is working with...looking at his signature it looks like either a 71 or 72 which should be fine.

ChevyDude · 10-27-2004, 01:48 PM

Truck I'm asking about is a 71' that came with disc brakes but not power assisted.

Tx Firefighter · 10-27-2004, 02:11 PM

The line will "stretch" just like said above.

There is also a set of brackets and a linkage that goes between the firewall and the booster. You have to have these items also.

ChevyDude · 10-27-2004, 07:02 PM

I've got all the brackets..thanks guys!

10-26-2004, 07:10 PM	#1
ChevyDude Senior Member Join Date: Jun 2003 Location: Westminster, CO Posts: 3,071	Changing over to Power Brakes, do I need different lines??? My truck came with manual disc brakes and I am hooking up the new power booster and Proportion valve....Will I need new pre bent brake lines or will the existing ones fit??? Help from the experts please! __________________ Alex 1971 Lil' Red 350 SBC 700R4

10-27-2004, 01:27 PM	#3
67chev Registered User Join Date: Apr 2004 Location: Spokane, WA Posts: 458	Not questioning you chevytruckfan, but I heard that you have to go with the bigger lines ('71/'72 lines) on the front if you go with power brakes. This is, of course, for the guys like me with the '67-'70 trucks. Not sure what year ChevyDude is working with...looking at his signature it looks like either a 71 or 72 which should be fine. __________________ "SicStee8" Chevy SWB Fleetside, in progress...500 HP 383 w/TriPower, 700r4, 3.73's, Lowered, Shaved Driprail/sidemarkers/handles/ant, Gonna rock!! '96 Chevy Tahoe 4X4 '84 Chevy C/K10 4X4 (FOR SALE)

10-27-2004, 01:48 PM	#4
ChevyDude Senior Member Join Date: Jun 2003 Location: Westminster, CO Posts: 3,071	Truck I'm asking about is a 71' that came with disc brakes but not power assisted. __________________ Alex 1971 Lil' Red 350 SBC 700R4

10-27-2004, 02:11 PM	#5
Tx Firefighter Watch out for your cornhole ! Join Date: Jun 2003 Location: Azle, Texas Posts: 14,162	The line will "stretch" just like said above. There is also a set of brackets and a linkage that goes between the firewall and the booster. You have to have these items also. __________________ I'm on the Instagram- @Gearhead_Kevin

10-27-2004, 07:02 PM	#6
ChevyDude Senior Member Join Date: Jun 2003 Location: Westminster, CO Posts: 3,071	I've got all the brackets..thanks guys! __________________ Alex 1971 Lil' Red 350 SBC 700R4

10-26-2004, 07:45 PM	#2
chevytruckfan Account Suspended Join Date: May 2004 Location: Lake Placid, Florida Posts: 930	No you dont need new lines. The ones you have will flex enough to pull the MC away from the firewall far enought to get the booster in there without having to disconnect any. Just make sure you have the longer push rod that connects the booster to the pedal and a new vacuum check valve.



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