4l80e trans question... - The 1947 - Present Chevrolet & GMC Truck Message Board Network

menace121978 · 04-27-2010, 12:57 AM

hey guys, i need to know what size/type thread is on the trans cooler inlet/outlet. i was going to try and use the stock quick release lines but i remember seeing someone unscrewing them and putting regular -an style adaptors on there. ring any bells? a link would be very helpful! thanks!!

menace121978 · 04-27-2010, 01:12 AM

here's a pic...

Big Port Jimmy 6 · 04-27-2010, 08:06 PM

1\4 npt maybe. I have done it before and I think it is 1\4 but could be 3\8 npt. I plan on changing mine to #5 AN with a pipe to AN straight adapter. Jay

**Thealien** · 04-27-2010, 08:11 PM

They are 1/4 NPST National pipe straight thread. Here are a couple of options

Here are some that will clip into your factory quick disconnects and are AN -6

And these are the straight thread to AN -6

I have heard of a couple of people cracking their transmission cases using NPT (taper thread)

menace121978 · 04-27-2010, 08:59 PM

thanks guys! i ordered them up this morning. the clip in type.

04-27-2010, 12:57 AM	#1
menace121978 Registered User Join Date: Jan 2009 Location: orangevale, ca Posts: 3,626	4l80e trans question... hey guys, i need to know what size/type thread is on the trans cooler inlet/outlet. i was going to try and use the stock quick release lines but i remember seeing someone unscrewing them and putting regular -an style adaptors on there. ring any bells? a link would be very helpful! thanks!! __________________ "Dennis the Menace" 1978 Silverado (2wd, 1/2 ton, short bed)complete nut & bolt frame off restomod LQ9/4L80E MY LS SWAP/FRAME OFF BUILD BOOK 2006 TBSS way too much to list

04-27-2010, 01:12 AM	#2
menace121978 Registered User Join Date: Jan 2009 Location: orangevale, ca Posts: 3,626	Re: 4l80e trans question... here's a pic... Attached Images __________________ "Dennis the Menace" 1978 Silverado (2wd, 1/2 ton, short bed)complete nut & bolt frame off restomod LQ9/4L80E MY LS SWAP/FRAME OFF BUILD BOOK 2006 TBSS way too much to list

04-27-2010, 08:06 PM	#3
Big Port Jimmy 6 Addicted to Rust Join Date: Dec 2009 Location: Abbeville SC Posts: 1,030	Re: 4l80e trans question... 1\4 npt maybe. I have done it before and I think it is 1\4 but could be 3\8 npt. I plan on changing mine to #5 AN with a pipe to AN straight adapter. Jay __________________ Current trucks: (48 GMC100 320 inliner) Gone (48 Suburban in pieces) Sold 87 GMC CCSB 5.3 4l60E Daily Driver ECTA National record holder XO/PP We never really grow up, we just learn how to act in public.

04-27-2010, 08:11 PM	#4
Thealien Senior Member Join Date: Jun 2007 Location: Pine Ridge Florida Posts: 4,134	Re: 4l80e trans question... They are 1/4 NPST National pipe straight thread. Here are a couple of options Here are some that will clip into your factory quick disconnects and are AN -6 And these are the straight thread to AN -6 I have heard of a couple of people cracking their transmission cases using NPT (taper thread) __________________ Click on my Not really a build thread, yet NOT SO RUST FREE RUST FREE BLAZER LS ENGINE SWAP INFORMATION THREAD BOLT RESTORATIONS 4l60 to an NP205

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04-27-2010, 08:59 PM	#5
menace121978 Registered User Join Date: Jan 2009 Location: orangevale, ca Posts: 3,626	Re: 4l80e trans question... thanks guys! i ordered them up this morning. the clip in type. __________________ "Dennis the Menace" 1978 Silverado (2wd, 1/2 ton, short bed)complete nut & bolt frame off restomod LQ9/4L80E MY LS SWAP/FRAME OFF BUILD BOOK 2006 TBSS way too much to list



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