TPI Tuned Port Injection discussion and questions. LB9 and L98 tech, porting, tuning, and bolt-on aftermarket products.

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Stock Vacuum?

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Old

Sep 22, 2002 | 08:57 PM

#1

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From: N. Illinois

Car: 92 GTA/ 00 TA

Engine: 383/350

Transmission: 700R4/T-56

Stock Vacuum?

What's stock vacuum supposed to be on the L98?

Old

Sep 22, 2002 | 09:46 PM

#2

cobrakiller1989

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From: Baltimore, MD

i cant give you an exact number but im pretty sure you should have around 18-20 inches of vacuum stock

Old

Sep 23, 2002 | 12:22 PM

#3

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iTrader: (5)

Joined: Feb 2002

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From: N. Illinois

Car: 92 GTA/ 00 TA

Engine: 383/350

Transmission: 700R4/T-56

18-20 huh.
I'm at 15 upon initial startup.

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