Author Topic: Size and Type of Threads for A/C Hoses  (Read 1229 times)

Online ehjorten

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Size and Type of Threads for A/C Hoses
« on: June 28, 2021, 02:59:23 PM »
So I need to have a couple of custom A/C Hoses made for my '91 LS Conversion to get the A/C all buttoned up and ready to charge. Can someone tell me what the thread designations are on each of these? I don't have my truck next to me to measure, so I'm not sure what sizes everything is. I assume they are some standard thread size of some sort.
-Erik-
1991 V3500 - Gen V TBI 454, 4L80E, NP205, 14 bolt FF, D60, 8" Lift on 35s
1977 K20 Silverado - 350, THM350, NP203, 14 bolt FF, D44, Stock Lift on 31s
1969 Chevelle Malibu Sport Coupe - EFI350, THM350
1968 Chevrolet Step-side Pickup - 300HP L6

Offline Captkaos

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Re: Size and Type of Threads for A/C Hoses
« Reply #1 on: June 28, 2021, 03:45:52 PM »
Clarifying you mean as in Donor LS compressor to the Factory 91 Dryer Line?
I am not near my house but...

Online ehjorten

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Re: Size and Type of Threads for A/C Hoses
« Reply #2 on: June 28, 2021, 05:05:05 PM »
I have a comparable sized Sanden Compressor (comparable to the stock sized compressor) mounted to my 2004 LQ4 in a high mount passenger side, that will route to the stock A/C system on my '91 V3500. I have a new, sealed accumulator, a new, sealed condenser, new, sealed evaporator. I also made a new high side line with a R134a port because the stock one didn't fit to the "stock" replacement condenser.
-Erik-
1991 V3500 - Gen V TBI 454, 4L80E, NP205, 14 bolt FF, D60, 8" Lift on 35s
1977 K20 Silverado - 350, THM350, NP203, 14 bolt FF, D44, Stock Lift on 31s
1969 Chevelle Malibu Sport Coupe - EFI350, THM350
1968 Chevrolet Step-side Pickup - 300HP L6