AC bracket/header clearance - The 1947 - Present Chevrolet & GMC Truck Message Board Network

smills78gmc · 04-04-2006, 08:05 PM

Anyone running headers and drivers side AC . Flowtech headers will not allow me to install bracket for the back of the compressor. Anyway around this? Different headers? Please Help.

beaterC10 · 04-04-2006, 09:01 PM

You should be able to modify the stock bracket to fit around the header tube. If I remember correctly you have to cut part of the bracket off and clearance the bracket to get it to fit. You will probably also have to use a stud and some spacers on the first one or two header bolt locations. I had to do this on a truck a few years back.

I have to do this to my current truck in the next few days.

texan1186 · 04-04-2006, 10:41 PM

here is a pic of my setup. i have the flowtech headers too.

f.monroe · 04-04-2006, 11:35 PM

Cut the back of your bracket like his picture shows . Then take one of the original bolts that has the studded end from one of the first two holes . Run a 3/8 inch nut on the threads that originally went into the head . Thread the stud through the header just like a header bolt and use the nut to tighten against the header . The other end is the studded end that should be in the same place it was (same spacing) as when it was originally installed in the cast iron manifolds . Then you can place the bracket over the stud , use another nut to secure it to the stud , and it should be good to go . This is how I di the A/C on my 77 I had in High School . I hope it makes sense because it is the easiest way that I found to mount the AC without having to buy an extra bracket . Frank

smills78gmc · 04-05-2006, 07:05 AM

Thanks, but I think my bracket is different. There is a piece that bolts between the second and third header bolt. I think I will try to find the same bracket that you have. It will be much easier.

beaterC10 · 04-05-2006, 07:53 AM

That bracket seems to be pretty common on trucks and Impalas

live85 · 04-05-2006, 05:07 PM

You are doing the right thing. Don't try to run without that bracket. I cracked my compressor by running without it.

smills78gmc · 04-05-2006, 06:28 PM

Do the different brackets go with different compressors? Or will the other bracket work with my comp.? The reason I ask is arent there like 3 different comp. for these trucks?

04-04-2006, 08:05 PM	#1
smills78gmc Registered User Join Date: Dec 2005 Location: tenn. Posts: 84	AC bracket/header clearance Anyone running headers and drivers side AC . Flowtech headers will not allow me to install bracket for the back of the compressor. Anyway around this? Different headers? Please Help.

04-04-2006, 09:01 PM	#2
beaterC10 Senior Member Join Date: Jul 2003 Location: Indianapolis, IN Posts: 1,277	Re: AC bracket/header clearance You should be able to modify the stock bracket to fit around the header tube. If I remember correctly you have to cut part of the bracket off and clearance the bracket to get it to fit. You will probably also have to use a stud and some spacers on the first one or two header bolt locations. I had to do this on a truck a few years back. I have to do this to my current truck in the next few days.

04-04-2006, 10:41 PM	#3
texan1186 Under Major Construction Join Date: Dec 2003 Location: harker heights, tx Posts: 120	Re: AC bracket/header clearance here is a pic of my setup. i have the flowtech headers too. Attached Images __________________ 1982 Chevy Silverado 350/700r4 see it here

04-04-2006, 11:35 PM	#4
f.monroe Senior Member Join Date: May 2004 Location: Caldwell,Tx. Posts: 3,648	Re: AC bracket/header clearance Cut the back of your bracket like his picture shows . Then take one of the original bolts that has the studded end from one of the first two holes . Run a 3/8 inch nut on the threads that originally went into the head . Thread the stud through the header just like a header bolt and use the nut to tighten against the header . The other end is the studded end that should be in the same place it was (same spacing) as when it was originally installed in the cast iron manifolds . Then you can place the bracket over the stud , use another nut to secure it to the stud , and it should be good to go . This is how I di the A/C on my 77 I had in High School . I hope it makes sense because it is the easiest way that I found to mount the AC without having to buy an extra bracket . Frank __________________ Born and proudly residing in a Red State !

04-05-2006, 07:05 AM	#5
smills78gmc Registered User Join Date: Dec 2005 Location: tenn. Posts: 84	Re: AC bracket/header clearance Thanks, but I think my bracket is different. There is a piece that bolts between the second and third header bolt. I think I will try to find the same bracket that you have. It will be much easier.

04-05-2006, 07:53 AM	#6
beaterC10 Senior Member Join Date: Jul 2003 Location: Indianapolis, IN Posts: 1,277	Re: AC bracket/header clearance That bracket seems to be pretty common on trucks and Impalas

04-05-2006, 05:07 PM	#7
live85 Registered User Join Date: Dec 1999 Location: Minor, AL Posts: 91	Re: AC bracket/header clearance You are doing the right thing. Don't try to run without that bracket. I cracked my compressor by running without it. __________________ Mike 1985 White Custom Deluxe LWB Early 70's 350 / stock turbo 350 2.73 open differential 10 bolt (yeehaw) Priceless sentimental value

04-05-2006, 06:28 PM	#8
smills78gmc Registered User Join Date: Dec 2005 Location: tenn. Posts: 84	Re: AC bracket/header clearance Do the different brackets go with different compressors? Or will the other bracket work with my comp.? The reason I ask is arent there like 3 different comp. for these trucks?



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