LS1 Master Cylinder swap
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Joined: Jul 1999
Posts: 888
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From: Houston, TX
Car: '87+'02 Z28
Engine: 454 LSX
Transmission: T-56, Viper output shaft
Axle/Gears: Strage 12-bolt 3.73:1
LS1 Master Cylinder swap
In addition to the ZO6 brake upgrade I thought i'd also throw in an LS1 master cylinder. Everything is installed and ready to go except I have NO BRAKES......the pedal goes to the floor with ease when I start the car. When bleeding each caliper, the brake pedal feels nice and tight. It's only when I start the car that the pedal becomes very soft. I bench bled the master cylinder, 2 times now and the same thing happens. Ideas anyone?
Thread Starter
Senior Member
Joined: Jul 1999
Posts: 888
Likes: 0
From: Houston, TX
Car: '87+'02 Z28
Engine: 454 LSX
Transmission: T-56, Viper output shaft
Axle/Gears: Strage 12-bolt 3.73:1
Ok, I still think air is caught in the MC, so I am going to take it off again and do yet another bench bleed. If this works i'll post results with pics in a new post 
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Joined: Jun 2003
Posts: 3,085
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From: Elgin, IL
Car: 1997 Corvette
Engine: LS1
Transmission: 4L60E
Axle/Gears: 2.73 IRS
Re: LS1 Master Cylinder swap
Originally posted by Neil
When bleeding each caliper, the brake pedal feels nice and tight. It's only when I start the car that the pedal becomes very soft. I bench bled the master cylinder, 2 times now and the same thing happens. Ideas anyone?
When bleeding each caliper, the brake pedal feels nice and tight. It's only when I start the car that the pedal becomes very soft. I bench bled the master cylinder, 2 times now and the same thing happens. Ideas anyone?
I was stupid and attempted to and ended up swimming out of my windows after getting nailed with an airbag and hanging upside down in my seat. Happily enough, it was a Dodge car
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