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How much engine vaccum please help

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

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Old

03-30-2007, 02:38 PM

#1

Senior Member

Join Date: Mar 2005

Posts: 477

Car: 1988 Corvette

Engine: 5.7L TPI L98

Transmission: 700R4

Axle/Gears: D36 2:59

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How much engine vaccum please help

hi all
How much engine vac does a pretty stock tpi normally have. I just bought a FP and VAC gauge all in one.

thank You

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04-01-2007, 03:59 AM	#2
Kevin91Z Moderator Join Date: Jul 1999 Location: Disneyland, SoCal Posts: 10,488 Car: 1991 Camaro Z28 Engine: 350 L98 siamesed runners Transmission: LT1 T56 Axle/Gears: 9-Bolt 3.70 Classifieds Rating: (1)	Re: How much engine vaccum please help About 17 or 18" of vacuum, and KPA readings in the 30's. __________________ 377 RWHP, 390 RWTQ (05-21-11) 12.803 @ 108.50 MPH (1.923 60') (04-11-01) Work: Manley Performance Products Founder: SoCal Thirdgenners Founder: SoCal TPI Organization

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04-01-2007, 03:59 AM

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1992 Camaro

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