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A/C COMPRESSOR BYPASS 78 400 HELP NEEDED. #1797753
04/07/15 07:43 PM
04/07/15 07:43 PM
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PARIS,IL 61944
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CHADCLINE22 Offline OP
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Removing the a/c compressor on my 78 New Yorker 400 until I can afford a vintage air/heat setup. Anyone know where or what part number pulley/bracket to bypass the compressor. My car has the dual pulley setup. Thanks for any help you can give.

Re: A/C COMPRESSOR BYPASS 78 400 HELP NEEDED. [Re: CHADCLINE22] #1797758
04/07/15 07:51 PM
04/07/15 07:51 PM
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Grand Prairie,Texas
stumpy Offline
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Why not just wait until you get the new system?

Re: A/C COMPRESSOR BYPASS 78 400 HELP NEEDED. [Re: CHADCLINE22] #1797807
04/07/15 08:48 PM
04/07/15 08:48 PM
Joined: Feb 2005
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Cincinnati, Ohio
Challenger 1 Offline
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Originally Posted By CHADCLINE22
Removing the a/c compressor on my 78 New Yorker 400 until I can afford a vintage air/heat setup. Anyone know where or what part number pulley/bracket to bypass the compressor. My car has the dual pulley setup. Thanks for any help you can give.


I'd keep the interior parts like the heat and AC box and use new modern stuff under the hood.

Bouchillon performance would know and have the correct pulleys for you. You going to have to change more than one pulley possibly? JR there knows mopar pulleys, you may not be lucky enough to talk to him, but they know what you need. Call them.

Last edited by Challenger 1; 04/07/15 08:49 PM.
Re: A/C COMPRESSOR BYPASS 78 400 HELP NEEDED. [Re: CHADCLINE22] #1798087
04/08/15 12:03 AM
04/08/15 12:03 AM
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UPPER MICHIGAN, MARQUETTE COUN...
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Why not leave the compressor as is. Just don't engage the clutch?

Re: A/C COMPRESSOR BYPASS 78 400 HELP NEEDED. [Re: CHADCLINE22] #1798389
04/08/15 11:45 AM
04/08/15 11:45 AM
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PARIS,IL 61944
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CHADCLINE22 Offline OP
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Compressor is already gone and engine is out. Those compressors weight about 40 lbs and I'm already dealing with a very heavy car and want as much performance as I can get. I will get with Bouchillon and try them . Thanks for the input.

Re: A/C COMPRESSOR BYPASS 78 400 HELP NEEDED. [Re: Challenger 1] #1798390
04/08/15 11:48 AM
04/08/15 11:48 AM
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PARIS,IL 61944
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CHADCLINE22 Offline OP
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Originally Posted By Challenger 1
Originally Posted By CHADCLINE22
Removing the a/c compressor on my 78 New Yorker 400 until I can afford a vintage air/heat setup. Anyone know where or what part number pulley/bracket to bypass the compressor. My car has the dual pulley setup. Thanks for any help you can give.


I'd keep the interior parts like the heat and AC box and use new modern stuff under the hood.

Bouchillon performance would know and have the correct pulleys for you. You going to have to change more than one pulley possibly? JR there knows mopar pulleys, you may not be lucky enough to talk to him, but they know what you need. Call them.


I really want to get rid of all that extra nonsense that Chrysler used behind the dash is possible. I've eliminated almost all the weak links in the wiring and such and that oversized a/c and heater box will eventually go. I've worked with the vintage air stuff and it's pretty decent and compact. Trying to lighten this car up as much as possible and make it easier to work on in the future. Thanks for your help.

Re: A/C COMPRESSOR BYPASS 78 400 HELP NEEDED. [Re: CHADCLINE22] #1798393
04/08/15 11:55 AM
04/08/15 11:55 AM
Joined: Feb 2005
Posts: 28,312
Cincinnati, Ohio
Challenger 1 Offline
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Originally Posted By CHADCLINE22
Originally Posted By Challenger 1
Originally Posted By CHADCLINE22
Removing the a/c compressor on my 78 New Yorker 400 until I can afford a vintage air/heat setup. Anyone know where or what part number pulley/bracket to bypass the compressor. My car has the dual pulley setup. Thanks for any help you can give.


I'd keep the interior parts like the heat and AC box and use new modern stuff under the hood.

Bouchillon performance would know and have the correct pulleys for you. You going to have to change more than one pulley possibly? JR there knows mopar pulleys, you may not be lucky enough to talk to him, but they know what you need. Call them.


I really want to get rid of all that extra nonsense that Chrysler used behind the dash is possible. I've eliminated almost all the weak links in the wiring and such and that oversized a/c and heater box will eventually go. I've worked with the vintage air stuff and it's pretty decent and compact. Trying to lighten this car up as much as possible and make it easier to work on in the future. Thanks for your help.


I hear ya, I converted 2 cars from the old compressors to the new compressors. All new under the hood and all stock inside. Works really well and is cheaper than buying a whole new AC/heater box and then have to make it fit and hope it moves enough air.

Re: A/C COMPRESSOR BYPASS 78 400 HELP NEEDED. [Re: CHADCLINE22] #1798544
04/08/15 03:18 PM
04/08/15 03:18 PM
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Rio Linda, CA
John_Kunkel Offline
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Somebody posted this pic of a compressor eliminator, don't know the source.

Compressor Eliminator.jpg
Re: A/C COMPRESSOR BYPASS 78 400 HELP NEEDED. [Re: John_Kunkel] #1798943
04/08/15 10:56 PM
04/08/15 10:56 PM
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ahy Offline
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As a suggestion, go ahead and get the Sanden Compressor and brackets. It may be $2-300 more than you want to spend right now but you will be ahead when you put the AC back. With the clutch control wire disconnected, the compressor is just a big idler pulley. I got my setup from Bouchillon ('78 400 core engine).







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