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09-03-2017, 08:57 PM
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#1 |
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Registered User
 
Join Date: Jan 2012
Location: greenville pa 16125
Posts: 283
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4l80 adapter
I am putting a 4l80 in my 1985 k30 . I have a 241 transfer case to put behind it . I am having a hard time finding a adapter to connect the two . Are they available?
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09-03-2017, 10:28 PM
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#2 |
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Post Whore
 
Join Date: May 2015
Location: Alabama
Posts: 14,670
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Re: 4l80 adapter
I just looked thru advance adapters and novak..neither have one ,and if they don't, good chance nobody does..found a factory one on ebay but when I pulled it up it says sold..something i read on pirates 4x4 says it may have came only in 89-91 2500 suburbans
Last edited by mongocanfly; 09-03-2017 at 10:38 PM. |
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09-03-2017, 10:50 PM
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#3 |
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Post Whore
Join Date: May 2015
Location: Alabama
Posts: 14,670
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Re: 4l80 adapter
found this in your neck of the woods....http://www.ebay.com/itm/4L80E-TH400-...BZefRI&vxp=mtr
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09-04-2017, 02:21 AM
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#4 |
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Registered User
Join Date: Jan 2007
Location: Central Coast California
Posts: 1,026
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Re: 4l80 adapter
Driver drop 4l80e/np241 adapters should work on passenger drop np241/np208 cases,iirc...
Maybe this broadens your search? Wil
__________________
1972 K20 Suburban 5.7/700r4/NP205 Dana 44/H052 Sold  1972 C10 5.3L/4L60E 12bolt 5Lug - Sold 1971 K5 Blazer 6.0L LQ9 4L60E NP205 Dana 44/H052!!!  1970 K3500 1ton CrewCab 8.1L/Allison1000/NP205 Dana 60/14B!!!! - Sold 1984 K10 SWB 7.4L/4L80e/NP208 Corp 10/12 bolt Sold 1988 V30 CCLB 7.4L/TH400/NP205/Dana 60/Dana 70/3.73!!! (Sold) 2003 K2500HD 8.1/Allison1000/NP263
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09-04-2017, 02:33 AM
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#5 |
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Registered User
Join Date: Mar 2014
Location: Corvallis, OR
Posts: 715
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Re: 4l80 adapter
I looked at putting a 4L80 in my 89 suburban. I read that the adapter in my truck bolts to the 4L80 but a spacer is needed. What does your adapter look like? I thought all turbo 400 had the same output flange and shaft as the early 4L80's.
__________________
1972 GMC Jimmy Custom 4.8L (L20)/6L90E/NP205 1989 Chevy Suburban V2500 350/Turbo 400/4.11 gears 1996 Chevy Suburban K1500 350/4L60E |
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09-04-2017, 10:11 PM
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#6 |
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Registered User
Join Date: May 2012
Location: horseheads,ny rust belt
Posts: 2,794
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Re: 4l80 adapter
the 4l80-e has a tiny bit different ring cast in the adapter were the BIG square cut o-ring sits from a th400 . also th400 adapters have feet forward for the mount to bolt on the bottom and these hit the case of a 4l80-e . true 4l80-e adapter has feet rear word .
th400/round 205 adapter = pic 1 and feet forward . 4l80-e/round 205 adapter = pic 2 feet rearward . i know not for 241 case but shows the idea .
__________________
77-k30lb BIG truck build . 87-k30lb budget beater build . 85-k30lb the plow machine build . 85-c10sb summer fun toy . ----------------------------- HOLLEY SNIPER efi = worst case of p.i.t.a i ever had . EDELBROCK pro flo 4 = best deal going so far . love my setup works great. |
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09-04-2017, 10:14 PM
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#7 |
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Registered User
Join Date: May 2012
Location: horseheads,ny rust belt
Posts: 2,794
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Re: 4l80 adapter
then that difference i was talking about and a spacer ring a guy made for his combo .
i do also know in the 205 adapter family the th400 unit is a tad shorter/thinner than the 4l80-e unit . so the spacer serves 2 things . spacer to make this up and conversion of the ring size difference .
__________________
77-k30lb BIG truck build . 87-k30lb budget beater build . 85-k30lb the plow machine build . 85-c10sb summer fun toy . ----------------------------- HOLLEY SNIPER efi = worst case of p.i.t.a i ever had . EDELBROCK pro flo 4 = best deal going so far . love my setup works great. |
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