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What size is the STS oil return line?

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Old 04-28-2009, 05:34 PM
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Default What size is the STS oil return line?

I am moving my STS oil return line to the oil pan. I will shorten it and use an Earl's fitting to connect to my 1/4 NPT fitting in the pan. What size is the line, -6AN or -8AN?
I am looking in particular at -6AN part Earl's Performance 820106ERL or -8AN part Earl's Performance 820107ERL .
Thanks in advance.
Old 04-28-2009, 09:53 PM
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As you know, the STS return oil line is 3/8". I am in the middle of a DIY rear mount and I am use -8 from the turbo to the pump and -6 from the pump to the pan..
Old 04-28-2009, 09:56 PM
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im looking to do the same. Anyone have any pics of this done?
Old 04-29-2009, 06:37 AM
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Originally Posted by mk1973
As you know, the STS return oil line is 3/8". I am in the middle of a DIY rear mount and I am use -8 from the turbo to the pump and -6 from the pump to the pan..
No, I did not know, hence the question. My fitting on the pan has a 1/4 NPT female connection. What fitting would I put on the 3/8" STS line?
Old 04-29-2009, 07:45 AM
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Originally Posted by 99Ws6TransAm
im looking to do the same. Anyone have any pics of this done?
I do, but it is on a GTO.
Old 04-29-2009, 07:24 PM
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Originally Posted by koolaid_kid
No, I did not know, hence the question. My fitting on the pan has a 1/4 NPT female connection. What fitting would I put on the 3/8" STS line?

I would use this in the oil pan: Aeroquip FBM2004
I would then use this on your 3/8" sts oil line coming from the pump to the pan: Aeroquip FBM1532

Last edited by mk1973; 04-29-2009 at 07:31 PM.
Old 04-29-2009, 07:35 PM
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Originally Posted by 99Ws6TransAm
im looking to do the same. Anyone have any pics of this done?
I will have pics in about 2 weeks!!! I will be boosted!
Old 04-30-2009, 03:58 PM
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Thanks, mk1973, I'll look into it.
99WS6, I have an aftermarket pan on an LT1, so pics will probably not do you any good.



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