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#1048262 - 02/17/17 02:43 AM Unused bolt on intake manifold?  
Joined: Jun 2016
Posts: 360
ChasUno Offline
Member
ChasUno  Offline
Member

Joined: Jun 2016
Posts: 360
Bradenton, FL
Simple, and possibly dumb question!

I'm refitting all the parts to my car after doing an intake manifold gasket change. While everything was apart, I cleaned everything and in some cases repainted parts too. Even though I photographed much of the strip down, many of the fasteners are now so clean it's not always clear where they used to be, no tale tell marks to match them to!

I have managed to work out where most parts and fasteners go, except for one bolt. I *think* it came from the inlet manifold, as the only empty bolt hole I could find was to the left of the number "5" of the intake manifold, driver's side, just below the carburetor throttle linkages (see pic below). It's not one of the manifold to head bolts, but it looks like it might have been used to mount something. The mirrored bolt at the front end of the manifold, to the right of number "3" is used to hold the AC compressor brace bar.

Is this bolt next to number "5" simply screwed into the manifold and not used? I can't for the life of me work out what is supposed to be bolted there.



1986 Monte Carlo SS

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#1048283 - 02/17/17 09:27 PM Re: Unused bolt on intake manifold? [Re: ChasUno]  
Joined: Dec 2005
Posts: 2,752
84LS1T56SS Offline
Member
84LS1T56SS  Offline
Member

Joined: Dec 2005
Posts: 2,752
Central, Arkansas
An a/c bracket reinforcement rod goes there, I think.



85 MCSS, 02 5.3/4L60E stock daily driver,84 MCSS, Another stock 5.3/60E.
#1048288 - 02/17/17 10:38 PM Re: Unused bolt on intake manifold? [Re: ChasUno]  
Joined: Sep 2015
Posts: 189
ratbuddy Offline
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ratbuddy  Offline
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Joined: Sep 2015
Posts: 189
Plantsville, CT
On mine, that bolt hole is just sitting there empty..

#1048308 - 02/18/17 01:01 PM Re: Unused bolt on intake manifold? [Re: ChasUno]  
Joined: Jul 2001
Posts: 4,488
Joe87monteSS Offline
15+ Year
Joe87monteSS  Offline
15+ Year
Member

Joined: Jul 2001
Posts: 4,488
Memphis,TN
You can barely see in the picture that he already has the AC rod in the front hole. This (second) hole on mine was also empty.


Joey
Engine/head builder/machinist
1987 Monte Carlo SS 383/4 Speed
2004 Silverado
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#1048327 - 02/19/17 03:28 AM Re: Unused bolt on intake manifold? [Re: ChasUno]  
Joined: Jun 2016
Posts: 360
ChasUno Offline
Member
ChasUno  Offline
Member

Joined: Jun 2016
Posts: 360
Bradenton, FL
Joey is correct, the front (non intake to head) hole already has the AC brace bracket connected. It's the rear hole that I couldn't work out if anything should be connected to it. Cheers Joey and ratbuddy for confirming that it should be empty. I had a spare bolt that didn't seem to have come from anywhere else, so I stuck it in that hole. If it was meant for something else, I'm sure I'll find out eventually!


1986 Monte Carlo SS

[Linked Image]
#1048340 - 02/19/17 06:37 PM Re: Unused bolt on intake manifold? [Re: ChasUno]  
Joined: Apr 2008
Posts: 75
malibudave78 Offline
10+ Year
malibudave78  Offline
10+ Year
Member

Joined: Apr 2008
Posts: 75
Houston, TX
Those two bolts are for the AC brackets. The older style, longer AC compressors used both bolt holes. The newer, shorter compressors used just the front bolt hole.


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