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73-87 Chevy _ GMC Trucks => Engine/Drivetrain => LT/LS Swaps => Topic started by: jfkelley on January 11, 2022, 09:05:42 PM

Title: LS SWAP 5.3.4L60E / 1976 K10 4X4 "NEED TRANSFER CASE ADVISE"
Post by: jfkelley on January 11, 2022, 09:05:42 PM

I have decided to do an LS swap on my 1976 High Sierra K10 4X4 , I will be buying an complete 5.3 GEN 3 / 4L60E 4WD Transmission with ECM , Harness and fuse box   ..My question to the forum experts is what transfer case will bolt up to the 4L60e?...I would like a transfer case that is a manual shift linkage nothing electronic ...Thanks in advance ...

Title: Re: LS SWAP 5.3.4L60E / 1976 K10 4X4 "NEED TRANSFER CASE ADVISE"
Post by: JohnnyPopper on January 12, 2022, 04:55:59 PM

https://duckduckgo.com/?q=2000+chevy+silverado+1500+4x4+transfer+case&t=ffcm&atb=v159-1&ia=web

Looks like the year range is from 1999-2008?

Title: Re: LS SWAP 5.3.4L60E / 1976 K10 4X4 "NEED TRANSFER CASE ADVISE"
Post by: ehjorten on January 13, 2022, 11:14:32 AM

Advanced Adapters makes a kit that will adapt a NP205 (round bolt pattern - hard to find), NP208, or NP241 to a 4L60e.

https://www.advanceadapters.com/products/50-6901--gm-700r4-to-gm-np208-adapter-kit-replacing-th400/

Title: Re: LS SWAP 5.3.4L60E / 1976 K10 4X4 "NEED TRANSFER CASE ADVISE"
Post by: jfkelley on January 18, 2022, 11:43:08 PM

I finally found an NP 241C ..What adapter do I need to attach it to the 4L60e ?

Title: Re: LS SWAP 5.3.4L60E / 1976 K10 4X4 "NEED TRANSFER CASE ADVISE"
Post by: ehjorten on January 19, 2022, 09:43:32 AM

Call Advanced Adapters. They should be able to help you.

Title: Re: LS SWAP 5.3.4L60E / 1976 K10 4X4 "NEED TRANSFER CASE ADVISE"
Post by: VileZambonie on January 19, 2022, 04:17:06 PM

The stock adapter will work for one of these trucks with 700R4/4L60 and NP208/241

Title: Re: LS SWAP 5.3.4L60E / 1976 K10 4X4 "NEED TRANSFER CASE ADVISE"
Post by: jfkelley on January 19, 2022, 09:48:47 PM

Is this the correct adapter I need ?

https://www.gmtransmissionparts.com/extension-housing-4wd-4l60e-15005474/

Title: Re: LS SWAP 5.3.4L60E / 1976 K10 4X4 "NEED TRANSFER CASE ADVISE"
Post by: VileZambonie on January 20, 2022, 07:02:04 AM

https://www.ebay.com/itm/363689596085?hash=item54ad96d4b5:g:g2MAAOSwjoxh4KGb

Title: Re: LS SWAP 5.3.4L60E / 1976 K10 4X4 "NEED TRANSFER CASE ADVISE"
Post by: jfkelley on January 20, 2022, 08:52:05 PM

Thanks @ VileZambonie I just purchased the adapter .. I have a 5.3/4l60 out of a 2005 truck with a 241 t/c out of a 91 suburban with vss.I am wanting to wire up the vss and the 4 w/d so the pcm knows when its in 4-low..But have also thought about a switch on the transfer case shift lever its self or even a toggle switch mounted remotely. Has anyone have experience with this?