master cylinder
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Joined: Apr 2003
Posts: 191
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From: Wisconsin
Car: IROC-Z
Engine: L98 350/ 5.7L
Transmission: 700R4
master cylinder
So i figured my 20 year old master cylinder is shot and needs a replacement... so i picked up a used low milage mc from a 98 bird.
From what i read on the net its a simple swap. It is also to my understanding the 93-97 had different brake fitting sizes. and the 98-02 is what i need.
I unbolted mine and saw the brake line thread sizes matched the new M/C Yay!
But the bore size dont... My stock 3rd gen bore is like 31-32m
then the 4th gen master cylinder's bore is 25.4... what's up with that?
From what i read on the net its a simple swap. It is also to my understanding the 93-97 had different brake fitting sizes. and the 98-02 is what i need.
I unbolted mine and saw the brake line thread sizes matched the new M/C Yay!
But the bore size dont... My stock 3rd gen bore is like 31-32m
then the 4th gen master cylinder's bore is 25.4... what's up with that? 
Joined: Aug 2006
Posts: 12,804
Likes: 103
From: Central NJ
Car: 86 Trans Am
Engine: 408 stroker sbc
Transmission: TKO600
Axle/Gears: Moser full floater m9, 3:70 trutrac
Re: master cylinder
the smaller bore size is a good thing, dont worry about it.
Joined: Aug 2006
Posts: 12,804
Likes: 103
From: Central NJ
Car: 86 Trans Am
Engine: 408 stroker sbc
Transmission: TKO600
Axle/Gears: Moser full floater m9, 3:70 trutrac
Re: master cylinder
i did because they were different. But some people here say they have used the stock one with no issues.
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