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What is this/do i need it?

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Old 07-08-2006, 07:51 PM
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Car: 89 Trans am
Engine: TBI 350 HO Vortec heads
Transmission: 700R4
What is this/do i need it?



i know where it goes and what that is for, but is it an important element to the brake booster vac system? can i just replace it with a hose if its not?

thanks
Old 07-09-2006, 12:01 PM
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Car: 89 iroc-z
Engine: 305tpi
Transmission: wc-t5
Axle/Gears: 10 bolt 3.08 posi (4 now)
i always wondered what that thing did......
Old 07-09-2006, 05:15 PM
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Car: 89 Trans am
Engine: TBI 350 HO Vortec heads
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me too lol
Old 07-09-2006, 08:29 PM
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Car: Yes
Engine: Usually
Transmission: Sometimes
Axle/Gears: Behind me somewhere
It's a check valve.

If you like stopping reliably, you need it.

The rest of us, that have to share the road with you and whose lives depend on your ability to stop, would appreciate it if it was there.
Old 07-10-2006, 12:41 PM
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Car: 84 Z28
Engine: 357
Transmission: TH-350C
Axle/Gears: 3.43
I broke mine...

Been stopping fine for the last 2 years without it, though i guess i should replace it one day...
Old 07-11-2006, 02:48 AM
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Car: 1990 Formula
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Axle/Gears: Weak 7.5 with 4.10s
Why don't the TPI cars have one?
Old 07-11-2006, 09:58 AM
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Car: 84 Z28 / 91 Trans Am
Engine: LS1 / 5.0 TPI
Transmission: T56 / 700R4
Axle/Gears: 4.09 / 2.73
it is actually a filter to keep fuel vapor from the booster you only really need it on carb cars.
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