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#1 |
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![]() Join Date: May 2007
Location: Southern Cal
Posts: 20,006
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I am in the process of getting the factory A/C up and running for the summer. When I bought my truck, it was all original except for the exhaust manifolds were replaced with headers. I have gone back to the OEM exhaust manifolds, and have a question about one of the mounting points on the lower A/C support bracket. Is there a "spacer" between the bracket and the manifold? Or does the bracket simply "rest" against a nut that attaches on a short threaded stud (pictured below). If there is a spacer between them, I would assume a longer stud is needed, that extends all the way through the lower A/C bracket, and then a nut is used on the outside of that to secure both the bracket and the exhaust manifold.
Here is a closeup pic of what I am talking about, and a panned out pic, showing a larger view. The short threaded stud is a little rusty, just above the spark plug. Thanks for the help.
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1972 C/10 Cheyenne Super SWB. Restored, loaded, slammed. 1968 C/10 50th Anniversary LWB. Unrestored, stock, daily driver/work truck. RIP ElJay RIP 67ChevyRedneck RIP Grumpy Old Man |
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#2 |
Senior Member
Join Date: Jul 2001
Location: Muskegon,MI,USA
Posts: 6,026
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Re: Big Block A/C mounting bracket question
This may help you.
Jim
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1971 Shortbox step side 4x4, 350 sbc, 3:07 rear end 1965 Impala SS 400 sbc, Muncie rock crusher 1966 Impala SS 396 bbc, TH 400 1969 El Camino, 350 sbc, TH 350 1971 Snowplow built on a Blazer frame 1972 GMC Short bed, stepside, TH 400, 427 BBC |
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#3 |
Registered User
Join Date: Mar 2011
Location: Oak Ridge NC
Posts: 957
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Re: Big Block A/C mounting bracket question
It looks like the gap is where a stud bolt would go.
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#4 |
Moderator
![]() Join Date: May 2007
Location: Southern Cal
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Re: Big Block A/C mounting bracket question
Thanks for the pic Jim. It looks like a longer stud should go there so that it comes all the way throught the A/C bracket.
I pulled the short stud out today, and guess what...? It runs through a water jacket ![]() ![]()
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1972 C/10 Cheyenne Super SWB. Restored, loaded, slammed. 1968 C/10 50th Anniversary LWB. Unrestored, stock, daily driver/work truck. RIP ElJay RIP 67ChevyRedneck RIP Grumpy Old Man |
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#5 |
Member #1049
Join Date: Jun 2000
Location: Troy Montana
Posts: 3,940
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Re: Big Block A/C mounting bracket question
That would cause me a bit of concern as I am fairly certain that stud/bolt should not go into a water jacket,
Well... at least none of the many big blocks I have owned over the years ever had the front exhaust manifold mounting location go into water. |
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#6 |
Moderator
![]() Join Date: May 2007
Location: Southern Cal
Posts: 20,006
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Re: Big Block A/C mounting bracket question
It does cause me concern...I have never run across such a thing either. I took the stud out, and it was not an extended length or corroded or anything that would lead me to believe it punched through something
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1972 C/10 Cheyenne Super SWB. Restored, loaded, slammed. 1968 C/10 50th Anniversary LWB. Unrestored, stock, daily driver/work truck. RIP ElJay RIP 67ChevyRedneck RIP Grumpy Old Man |
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#7 | |
Registered User
Join Date: Apr 2007
Location: pasadena,TEXAS
Posts: 880
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Re: Big Block A/C mounting bracket question
Leddzepp on your original set up with headers what kind of bolt was used for the lower a/c bracket. With oem manifolds it looks like the bolt used is a bolt with a stud off the head of the bolt. I have headers with header bolts, the PO did not install the brackets for the a/c. I am wanting to get the original brackets back on to get the ac going, I am just trying to figure out what kind of bolt I need to use and if I need to try to find an original bolt. This is on a big block. Also is there 8 or 9 brackets needed? The truck and car shop cat only shows 8 . Thanks
Quote:
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1971 Cheyenne SWB 402BB, 700R4, 3.73 posi, PS, PB, A/C, Tilt, Tach "Wanda" Don't argue with idiots, People watching may not be able to tell the difference... There's someone in my head........But it's not me...... cheap tricks thread great info here!! http://67-72chevytrucks.com/vboard/s...d.php?t=489394 Last edited by hdff; 11-27-2014 at 09:28 AM. |
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