cmpcpro

Hey guys does anyone know where I can get an original 1956 olds AC compressor bracket? Does anyone know if they are the same in 54 or 55? Thanks!

Tedd Thompson

Probably the same bracket 54-56 but they are as hard to find as hens teeth, anything AC is tough. Your best bet would be to find a picture blow it up to scale and make your own. Maybe someone here could help you out on measurements there are a couple who have AC cars on this forum... Best of luck ... Tedd

cmpcpro

THanks Tedd the book seems to show 55 and 56 are the same and I happened to mention it to a friend lastnight and he said he had one lol! So waiting on him I guess.

cmpcpro

Ended up friend had a caddy bracket can anyone offer any recommendations on where I may look? Willing to offer a nice finders fee! Thanks!

ignachuck

As you mentioned, 55 and 56 used the same bracket. Group 9.171, part #567794.

ignachuck

My scanner won't scan today, so I took a picture of page 499 of the 1957 Oldsmobile Master Chassis Parts Book which shows the Compressor Mounting details. Hope this helps.

Maybe someone has that book and can scan a clearer image.

Ozzie

As noted the 1956 and 1955 are the same brackets and supports; not so for the 1954. The bracket part is a casting and likely will be difficult to fabricate. If you are seeking originality you will have quite a job ahead. The '56 used the A5 compressor which is also difficult to find. Your best hope would be a donor car complete. Before 2005 I knew where it was available in New Orleans. Katrina's flood sent them all to the crusher. I had long term depression. If originality doesn't matter you can more easily get a bracket from a later model which uses the A6 compressor. It's more available and pumps better (until it seizes). The bracket will require a minor modification. The one from the 1964 also will hold an alternator.

ignachuck

I think the value of my lowly four door sedan just went up. Factory A/C with a working compressor Now if I can only find the leak......

Ozzie

Frank, you've got the hard part done already. Finding the leak should be easy compared to finding all the hardware. Be sure to check all those old hoses and the shaft seal. The evaporators were so good in those days that I doubt it's the problem. You have a gem.

ignachuck

Thanks Ozzie!! You made my day

redoldsman

I really wonder what would be different on the 54. The 4 groove crankshaft and water pump pulleys are pretty rare items also.

Ozzie

I never personally knew a '54 with the C.A.C., so I can't testify from experience, but if the parts book is right there definitely was a difference.

Group 9.171, Bracket-support, compressor mounting
1953 & 1954 w/C.A.C. part number 564451
1955 & 1956 w/C.A.C. part number 567794

Group 0.659, Balancer, crankshaft harmonic
1954 All w/C.A.C. (4 groove type) part number 759515
1955 & 1956 w/C.A.C. (3 groove type) part number 759900

Group 1.406 Pulley, fan hub
1954 w/C.A.C. (4 groove type) part number 565683
1955-1957 w/C.A.C. (2 groove type) part number 566419
In 1955 there was a dual groove and a single groove pulley on the water pump (piggy back). The dual groove was for the compressor/generator and the single was for the power steering. I can verify the configuration on the '55.

My best guess is that the 1954 Olds used a single belt for the generator and another single belt for the power steering with dual matched belts for the compressor. When they got to '55 they figured that they could use the dual matched belts to also drive the generator with a single belt for the power steering. The '54 was probably a stronger setup, but as always, I'm sure they tried to reduce costs and complexity.


1956 Pontiac




1958 Cadillac


As you can see above the Pontiac and the Cadillac only used a single belt on the A5 compressor. Oldsmobile seemed to prefer the dual matched belt design to reduce slippage; perhaps another example of superior engineering.

cmpcpro

Sorry guys this site doesn't email me anymore when new posts come in I already have AC in my car with a Vintage air r12 pump.. the problem is the bracket is a custom made and I think it's junk. It's not even straight. I was hoping to find a stock bracket and make it work with my pump.. At this point I'm willing to pay kindly for one!

Ozzie

Why not use a well made aftermarket bracket? The original bracket will be difficult to find and will need to be modified as it was meant to hold the A5.

cmpcpro

Can you recommend a good aftermarket bracket built for our engine? The one on there seems like it was rigged to work. Thanks!

Ozzie

Someone other than me should recommend a bracket from the aftermarket as I have never used any of them for the Olds stage I V-8 engines.

redoldsman

From what I could determine, there are no aftermarket brackets. I checked Vintage Air and all the other suppliers. I used a Sanden compressor and designed my own brackets. I used one of these brackets which made it a lot easier but it is only for a Sanden compressor.

http://www.ebay.com/itm/York-to-Sand...VYBo13&vxp=mtr

Russ P in MD

If you can't find an original, maybe contact someone like these guys and tell them your predicament:
http://streetrodbracketry.com/


http://www.hotrod.com/articles/1301s...-bracket-swap/

cmpcpro

Thanks they said they're too busy

56 BULB

thanks for the info i have bookmarked the site info Thank You Again .Mark

redoldsman

I think I kept a paper template of the brackets I used on my 54 if you are interested. I used it with a bracket that actually mounts the compressor. I referred to it above and provided a link but that link takes you to a different bracket now. I checked ebay and found the bracket I used and prices are all over the board. Here is a link to the bracket with the best price I found.

https://www.ebay.com/itm/YORK-TECUMS...rd!75088!US!-1

Tedd Thompson

Here is a thought if you don't or can't go with Redoldsman Idea.and I think you can get away with your original balancer pulley set up. At one time in the mid fifties Chevy had a generator and power steering combined unit. One stacked behind the other using a single belt and bracket. This eliminated the need for two of the groves in the balancer and allowed for a compressor bracket and belt to be used on the vacant grove. I heard of this combo when I was looking at maybe putting AC in my 55. I'll try to find a link for that for that generator/power steering combo and post it here.... Tedd

Try this link not the https://authenticautomotive.net/vintage-alternators/one I was remembering but close and expensieve!....