transfer case swap - The 1947 - Present Chevrolet & GMC Truck Message Board Network

timcrow00 · 08-16-2010, 05:02 PM

will a case from a 88 k3500 5.7 th400 work on my 93 k2500 5.7 4l60e?

ChevLoRay · 08-16-2010, 06:19 PM

Ttt

timcrow00 · 08-20-2010, 05:24 PM

lil help here

Ghastlyone · 08-20-2010, 05:32 PM

Your 93 has a 4L60E?

timcrow00 · 08-20-2010, 06:31 PM

yeah from what i hear 93 was the first year for the 60e

Ghastlyone · 08-20-2010, 06:38 PM

Huh, interesting.

I've always heard the 4L60's started in like 94 or 95? Maybe I heard wrong.

BigBlocksRule · 08-20-2010, 07:05 PM

Nope, '93 was the first year. Been there, done that. I think that the '93 - '95 are the same and they changed after that.
Bolt patterns are different from a TH400 to a 700R4/TH350. You might be able to get it done, but it'll take at least an adapter. There should be plenty of NP203's out there with the TH350/700 pattern, I sold two not long ago for $50 apiece.

benoit454 · 08-20-2010, 08:21 PM

203 that's a full time case aint it? did the 3500's use them? I thought a 203 went out back in the 70's.

But yea 700r4 and th350 have a 4 bolt tail pattern and 400 is 6 bolt, now a 4l80 I hear is the od replacement/same as th400? Not sure on the tails though. but a 4l60 is the same as the 700r4 or so I've read and seen online.

I also think the 400 is a 32 spline and 700r4's and th350's are 27, so splines might be different too. if not then yea an adapter should be all you need. except for maybe differences in length if they are different cases or something?

08-16-2010, 05:02 PM	#1
timcrow00 Registered User Join Date: Mar 2009 Location: mulvane, KS Posts: 200	transfer case swap will a case from a 88 k3500 5.7 th400 work on my 93 k2500 5.7 4l60e?

08-16-2010, 06:19 PM	#2
ChevLoRay Old Skool Club Join Date: Jun 2001 Location: Benton, AR "The Heart of Arkansas" Posts: 10,880	Re: transfer case swap Ttt __________________ Member Nr. 2770 '96 GMC Sportside; 4.3/SLT - Daily driven....constantly needs washed. '69 C-10 SWB; 350/TH400 - in limbo The older I get, the better I was.

08-20-2010, 05:24 PM	#3
timcrow00 Registered User Join Date: Mar 2009 Location: mulvane, KS Posts: 200	Re: transfer case swap lil help here

08-20-2010, 05:32 PM	#4
Ghastlyone Registered User Join Date: May 2010 Location: Las Vegas Nevada Posts: 223	Re: transfer case swap Your 93 has a 4L60E?

08-20-2010, 06:31 PM	#5
timcrow00 Registered User Join Date: Mar 2009 Location: mulvane, KS Posts: 200	Re: transfer case swap yeah from what i hear 93 was the first year for the 60e

08-20-2010, 06:38 PM	#6
Ghastlyone Registered User Join Date: May 2010 Location: Las Vegas Nevada Posts: 223	Re: transfer case swap Huh, interesting. I've always heard the 4L60's started in like 94 or 95? Maybe I heard wrong.

08-20-2010, 07:05 PM	#7
BigBlocksRule Registered User Join Date: Jun 2008 Location: Lubbock, TX Posts: 2,047	Re: transfer case swap Nope, '93 was the first year. Been there, done that. I think that the '93 - '95 are the same and they changed after that. Bolt patterns are different from a TH400 to a 700R4/TH350. You might be able to get it done, but it'll take at least an adapter. There should be plenty of NP203's out there with the TH350/700 pattern, I sold two not long ago for $50 apiece.

08-20-2010, 08:21 PM	#8
benoit454 Chris Join Date: Nov 2004 Location: Monaville, WV Posts: 3,737	Re: transfer case swap 203 that's a full time case aint it? did the 3500's use them? I thought a 203 went out back in the 70's. But yea 700r4 and th350 have a 4 bolt tail pattern and 400 is 6 bolt, now a 4l80 I hear is the od replacement/same as th400? Not sure on the tails though. but a 4l60 is the same as the 700r4 or so I've read and seen online. I also think the 400 is a 32 spline and 700r4's and th350's are 27, so splines might be different too. if not then yea an adapter should be all you need. except for maybe differences in length if they are different cases or something? __________________ Chris GIT R DONE!!!!!! Check out all our rides, http://www.cardomain.com/id/benwa454 Last edited by benoit454; 08-20-2010 at 08:22 PM.



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