Brake booster size and manifold vacuum
01-19-2018, 10:08 AM
Burning Brakes
Thread Starter
Member Since: Jul 2005
Posts: 770
Brake booster size and manifold vacuum
Can anyone please tell me what the brake booster size is on a 88-91 model year as well as the manifold vacuum being pulled at idle?
01-19-2018, 10:47 AM
Melting Slicks
Member Since: Dec 2008
Location: Mystic CT
Posts: 2,772
a 88 and 91 do not take the same booster is a start. Most auto parts web site will list the booster size under 'specs'.
01-19-2018, 10:56 AM
Burning Brakes
Thread Starter
Member Since: Jul 2005
Posts: 770
NAPA is saying 8 7/8 or 9 3/4.
What about manifold vacuum? What does a stock L98 Vette pull?
Last edited by ULTM8Z; 01-19-2018 at 10:57 AM .
01-19-2018, 03:43 PM
Melting Slicks
Member Since: Dec 2008
Location: Mystic CT
Posts: 2,772
16 to 18 inches more during deceleration if a stick.
01-19-2018, 04:30 PM
Burning Brakes
Thread Starter
Member Since: Jul 2005
Posts: 770