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  Vacuum line from C4 to Intake

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Author Topic:   Vacuum line from C4 to Intake
mainer
Gearhead

Posts: 148
From: Bryant Pond, Maine
Registered: Sep 2003

posted 08-31-2004 10:32 AM     Click Here to See the Profile for mainer   Click Here to Email mainer     Edit/Delete Message   Reply w/Quote
Didn't realize that I hadn't installed a vacuum line till last night while hooking up my tranny cooler. What kind of line do I use? What does the hook up on the tranny side look like? I'm assuming the intake is just a nipple fitting into the intake.

thanks,
don

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steve'66
Gearhead

Posts: 8826
From: Sonoma,CA,USA
Registered: Mar 2000

posted 08-31-2004 12:13 PM     Click Here to See the Profile for steve'66   Click Here to Email steve'66     Edit/Delete Message   Reply w/Quote
I don't have a vacumm modulator on my C-4. You sure yours does?

SteveW

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mainer
Gearhead

Posts: 148
From: Bryant Pond, Maine
Registered: Sep 2003

posted 08-31-2004 12:26 PM     Click Here to See the Profile for mainer   Click Here to Email mainer     Edit/Delete Message   Reply w/Quote
If it's this thing, then yes.

Did you remove yours? Is it necessary?

Thanks,
Don

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ntman
Journeyman

Posts: 50
From: Mulkeytown, IL
Registered: Jul 2004

posted 08-31-2004 01:20 PM     Click Here to See the Profile for ntman   Click Here to Email ntman     Edit/Delete Message   Reply w/Quote
It is needed unless you have a full manual valve body. You need the modulator valve hooked up or else it won't shift correctly.

[This message has been edited by ntman (edited 08-31-2004).]

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clevelandstyle
Gearhead

Posts: 1035
From: Connersville, IN
Registered: Jul 2001

posted 08-31-2004 06:56 PM     Click Here to See the Profile for clevelandstyle     Edit/Delete Message   Reply w/Quote
The end of that modulator will have a nipple in it. Look at the hose going into it in your picture.

If it's a manual vavle body you don't need it hooked up. If it's an automatic valve body, it likely won't go into high gear until you are going really fast if the modulator isn't hooded up.

------------------
Ben
Grabber Green '70 Mach I 351C 4V
Robbin Egg Blue '79 Fairmont 408C 4V, best time to date is 10.50 @ 125mph

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