Brake booster upgrade
Thread Starter
Senior Member

Joined: May 2011
Posts: 855
Likes: 1
From: New Bedford MA
Car: 1988 Gta trans am
Engine: LR4 4.8
Transmission: 98-02 t56 6 speed
Axle/Gears: Bw 9 bolt (3.70’s) pbr rotors
Brake booster upgrade
Is there a brake booster upgrade for 82-92 firebird i have a 1988 gta and im currently doing a LS1 brake upgrade im using a 1LE master from a 1989 if that matters i know there is a brake booster upgrade for 84-87 fiero when doing the grand am brake upgrade i know u use one from a s10/blazer like from a 1st gen blazer or s10 just wondering if the s10 one will work for our cars as well
Joined: Aug 2006
Posts: 12,807
Likes: 108
From: Central NJ
Car: 86 Trans Am
Engine: 408 stroker sbc
Transmission: TKO600
Axle/Gears: Moser full floater m9, 3:70 trutrac
Re: Brake booster upgrade
Booster is never an issue here. So long as the master is matched for the brake setup.
Thread Starter
Senior Member

Joined: May 2011
Posts: 855
Likes: 1
From: New Bedford MA
Car: 1988 Gta trans am
Engine: LR4 4.8
Transmission: 98-02 t56 6 speed
Axle/Gears: Bw 9 bolt (3.70’s) pbr rotors
Re: Brake booster upgrade
Ah ok so i should be fine with the stock 88-92 master cylinder
Supreme Member
Joined: Apr 2013
Posts: 1,353
Likes: 2
From: North Salt Lake
Car: '86 Camaro, '94 Camaro, 3 others
Engine: LG4 ->L29, L32->LR4, L36, LG4, L31
Transmission: 700R-4, T5WC, 4L80E, SM465, 4L60E
Axle/Gears: 3.42, 3.23, WTB/WTT 2.93
Re: Brake booster upgrade
I've long believed a 4.3L S-10 dual-diaphragm booster works better than most others, regardless of what it may be attached to.
Thread Starter
Senior Member

Joined: May 2011
Posts: 855
Likes: 1
From: New Bedford MA
Car: 1988 Gta trans am
Engine: LR4 4.8
Transmission: 98-02 t56 6 speed
Axle/Gears: Bw 9 bolt (3.70’s) pbr rotors
Re: Brake booster upgrade
Is there any benefit with the s10 booster when i had it on my fiero there was night and day difference in stopping and pedal travel
Supreme Member
Joined: Apr 2013
Posts: 1,353
Likes: 2
From: North Salt Lake
Car: '86 Camaro, '94 Camaro, 3 others
Engine: LG4 ->L29, L32->LR4, L36, LG4, L31
Transmission: 700R-4, T5WC, 4L80E, SM465, 4L60E
Axle/Gears: 3.42, 3.23, WTB/WTT 2.93
Re: Brake booster upgrade
Wouldn't take much to grab one at the salvage yard and test it on your car. Not much risk, either.
Thread Starter
Senior Member

Joined: May 2011
Posts: 855
Likes: 1
From: New Bedford MA
Car: 1988 Gta trans am
Engine: LR4 4.8
Transmission: 98-02 t56 6 speed
Axle/Gears: Bw 9 bolt (3.70’s) pbr rotors
Re: Brake booster upgrade
Ok so year do i have to get one from is a 1993 or older best since those dont have abs
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