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05-05-2012, 12:07 PM
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#1 |
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Registered User
Join Date: Mar 2011
Location: Lancaster,Oh.
Posts: 138
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A/C on big block
I don,t have any pis of the a/c compressor right now, but I know the clutch on it is burnt out(it locks up when I turn it on). Basically my questions are this, what compressor goes on an 87 big block? When I look it up they give me a choice of two, a Da6 or an Hr4 I think I got it right, but both of them look almost exactly alike. I'm not sure if the p.o. put the wrong one on there, and the one thats on it is re-manufactured. Could I use either one? Also wanted to know if I could switch to the 89-91 pulley set up and use the smaller shorter compressor. I have an 87 R20 burban with a big block.
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05-05-2012, 03:32 PM
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#2 |
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Registered User
Join Date: Apr 2010
Location: Kansas City, MO
Posts: 192
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Re: A/C on big block
The 6 compressor is the the smaller style and the 4 compressor is the "log" long style.
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05-06-2012, 07:53 AM
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#3 |
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Registered User
Join Date: Nov 2002
Location: Christchurch New Zealand
Posts: 226
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Re: A/C on big block
87 should have the small compressor,
Take the old one with you to match it up and they will need it for a core anyways Steve
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[B]92 GMC Sierra SLE Short/Wide FI 454/TH400 EBL 
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