Size thread on tranny cooling ports?
02-20-2002, 09:31 PM
#1
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Car: '87 IROC
Engine: LT1 350
Transmission: 700-R4
Size thread on tranny cooling ports?
I need to know what size thread the two ports for the tranny cooler are. Are they NPT, or what, and what size? I need to make some custom lines for my tranny cooler. Also, in kinda a related question, how can you tell what size AN fittings you have, the -3,4,5,6,7,8,9,10 rating, cuz i have two fittings like that on the tranny cooler, and I need to know what size to put on the tranny side...Thanks.
02-20-2002, 10:44 PM
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Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
Cooler fittings on the transmission and the radiator should be 5/16 inverted flare. Your tranny cooler is probably 1/2 NPT or -06 AN. Aeroquip makes a 5/16 inverted flare to -06 AN fitting you can use, but I don't remember the part number.
02-21-2002, 12:09 AM
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Car: '87 IROC
Engine: LT1 350
Transmission: 700-R4
Can you PLEASE help me with finding the fittings I need. I looked up AN fitting and started reading about adaptors and such and it's all GREEK to me! LOL. Here's a pic of my current setup, you can see the AN fittings sticking out of the tranny cooler. Now I want to make some nice lines to go to the transmission. Can someone help with what I need as far as speicific parts, even if the piece that goes to the tranny isn't AN, it's fine, I just want it to get connected lol.
02-21-2002, 10:46 PM
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Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
If the fittings on the cooler are -6 AN, you'll need enough -6 hose to get from each fitting on the cooler to the transmission, four -6 AN hose ends, and two 5/16 inverted flare to -6 AN adapters.
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