Author Topic: air conditioning brackets  (Read 3148 times)

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Offline Nodak T/A

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« on: January 21, 2007, 01:03:47 PM »
I've been looking at pictures of various engine compartments trying to figure out if I need the "L" shaped compressor bracket.  Seems that some have it and some don't.  When it is there it looks like it goes from the intake manifold to the back of the compressor.

Here's a picture (borrowed from eBay) showing the bracket I'm talking about..



I believe this set is from an early 70's 400
Jeff

78 Gold SE

Offline Rick

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« Reply #1 on: January 21, 2007, 01:07:32 PM »
That's the setup that was on my 75 400.  After the top end swap one of the bolt holes wouldn't line up with anything, but it's lasted 44,000 miles without a problem.

Offline brian c

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« Reply #2 on: January 21, 2007, 06:40:02 PM »
Here's my setup on a 78 w/ Pontiac 455 using all my brackets from the 400:







Its difficult to see (I'm really going to need to update my photos) but the L shaped bracket is there and definitely stablizes the AC compressor. And yes it mounts to 2 points on the intake manifold and then on 1 bolt hole on the rear of the compressor.

1978 Y88, '70 455 HO block bored 0.060, TH350, 3.42:1 gears...Oct '08 Fbodywarehouse Calendar - Woot!
1980 Firebird - no engine/tranny... to be pacecar clone

Offline Eagle 1

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« Reply #3 on: January 21, 2007, 08:24:43 PM »
Dont take any short cuts when it comes to brackets.  That one helps stabilize the rear of the compressor.  
I had a hard time finding that bracket too on ebay, but as soon as I purchased one, three more show up for sale on ebay. :roll:
Good luck finding one.
" He done good didnt he Fred?"
"I'm in pursuit of a black Trans Am. He's all mine so stay outta the way."

Offline MalteseFalcon

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« Reply #4 on: January 21, 2007, 09:18:31 PM »
That L-shaped bracket is also different pre- and post EGR, so if you are running a 1978 manifold, make sure you get one from 1973 - up.
Steve

1978 WS6 W72 4 Speed - Martinique Blue on Light Blue - Fire Am restification Project
2000 WS6 6 Speed - Black on Ebony - Daily Driver

Offline Grand73Am

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« Reply #5 on: January 21, 2007, 11:06:10 PM »
Anybody know if the a/c brackets on firebirds/TA pontiac engines are specific to them or can brackets from pontiac A and G bodies be used?
Steve F.

Offline MalteseFalcon

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« Reply #6 on: January 22, 2007, 08:51:51 PM »
I picked up a set of brackets off of a 400 in a '76 GP, and they appeared to be the same.
Steve

1978 WS6 W72 4 Speed - Martinique Blue on Light Blue - Fire Am restification Project
2000 WS6 6 Speed - Black on Ebony - Daily Driver

Offline Grand73Am

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« Reply #7 on: January 22, 2007, 09:45:47 PM »
Good to know that they won't be hard to find. Thanks!
Steve F.

Offline Nodak T/A

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« Reply #8 on: January 22, 2007, 09:49:47 PM »
definitely good to hear, gives a lot bigger pool of parts to gather from.  Plus I think I may be able to get a set from a guy here locally at a very reasonable price..
Jeff

78 Gold SE

Offline MalteseFalcon

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« Reply #9 on: January 23, 2007, 02:07:43 AM »
I'll try and dig them up and post some pics. Some of them have part numbers on them - and maybe we can confirm. Like I said, they look exactly the same to me. Its just been so long since I did that research, its fading a bit.

All the cars I looked at in the junkyards with the A6 (long) compressors seemed to be the same for the 400's and 455's if they were from the mid to late 70's. Some of the 301's have the R4 (more shallow) compressors and of course those won't fit on the earlier A6 compressors. I don't think they had the L-shaped bracket.
Steve

1978 WS6 W72 4 Speed - Martinique Blue on Light Blue - Fire Am restification Project
2000 WS6 6 Speed - Black on Ebony - Daily Driver