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02-20-2007, 11:49 PM
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#1 |
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Registered User
Join Date: Oct 2003
Location: San Jose Ca.
Posts: 3,334
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3 prong intake fitting
Can someone tell me what the 3rd prong is for on this fitting?
I know the bigger threaded one is for power brakes and I have the threaded steel line piece to go with it. One of the 2 smaller are for the turbo 400 but what is the third for? Could I run my vacuum guage off of it? 
__________________
RIP to my son Dylan. 5/17/2002 - 8/18/2018 If you want to know more about rare forms of pediatric cancer or if you want to help fund pediatric cancer research, please check out the website for the non-profit I started. https://slothforpedcancer.org 68 build thread http://67-72chevytrucks.com/vboard/s...d.php?t=223234 Last edited by skokie; 02-20-2007 at 11:49 PM. |
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02-21-2007, 12:16 AM
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#2 |
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Registered User
Join Date: Sep 2004
Location: Pierre SD
Posts: 1,533
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Re: 3 prong intake fitting
Could be for anything really. Some had a cap on the extra. It may not have even been used on your truck. I think you could hook your vac gauge to it.
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I think the world needs a drink...  Help somebody...If you can....VanZant We're not wrong, we're not sorry, and its probably gonna happen again. That's the truth about men. Tracy Byrd  Member# 13924 '70 c10, 350/350 '68 c10 250/4spd '68 c10 no eng/trans fac ps/pb/ac/at (future father/sons project) '48 Chevy Loadmaster |
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02-21-2007, 12:35 AM
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#3 |
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Registered User
Join Date: Feb 2004
Location: Tacoma WA
Posts: 1,365
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Re: 3 prong intake fitting
sdkid is correct. Hook up your vac guage there. I have even seen 4 prong fittings.
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67 C-20 LWB, tilt, speed alert, vac, 454, T400 67 C-10 SWB, factory air with more to follow |
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02-21-2007, 12:54 AM
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#4 |
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Senior Member
 Join Date: Mar 2003
Location: Colfax-California
Posts: 8,504
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Re: 3 prong intake fitting
Threaded one for the brake booster, the one with the ridge for the trans and the other for the AC vac cannister
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02-21-2007, 01:04 AM
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#5 |
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Registered User
Join Date: Oct 2003
Location: San Jose Ca.
Posts: 3,334
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Re: 3 prong intake fitting
Thanks kwmech. Since I dont have a ac vac cannister then its heading for the vacuum guage
__________________
RIP to my son Dylan. 5/17/2002 - 8/18/2018 If you want to know more about rare forms of pediatric cancer or if you want to help fund pediatric cancer research, please check out the website for the non-profit I started. https://slothforpedcancer.org 68 build thread http://67-72chevytrucks.com/vboard/s...d.php?t=223234 |
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02-21-2007, 01:07 AM
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#6 |
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Senior Member
Join Date: Mar 2003
Location: Colfax-California
Posts: 8,504
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Re: 3 prong intake fitting
There ya go
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