found a free NP241, quick queston though - The 1947 - Present Chevrolet & GMC Truck Message Board Network

bufmatmuslepants · 07-04-2007, 12:40 AM

buddy has a NP241 hell give me for free, what else would i need to use it to replace my NP203? are the driveshafts the same length? do i need an adaptor? he said he has the driveshafts from the blazer it came out of, will either one of them work?

bufmatmuslepants · 07-05-2007, 12:56 AM

nobody has any idea? i have a 203 with a part time kit lined up to buy if i cant fit this 241 please help me figure out what i should do!

1969k10stepside · 07-05-2007, 12:57 AM

You are better off asking this in the 4wd section...

bigtruck81 · 07-05-2007, 01:24 AM

you just need the proper (TH400, or TH350, whichever the case) to NP208 or NP241 adapter. and make sure that the 241 came from behind a 700R4, if not, you'll have to change the input gear on the case.

Russell · 07-05-2007, 09:28 PM

An NP241 uses the same adapter as an NP208 does, and should directly replace one. There are 27 (I think) and 32 spline NP241s, you'd need a transmission with the same spline count to bolt it straight up.

I think that most if not all NP203s are 32 spline units, but I don't know if the adapters are the same or not.

The front driveshaft from the blazer should work in your truck, but you'll probally need to get the rear shaft's length changed. Does the NP241 have an electric speedo, or is it from an 89 with a mechanical speedo drive? Make sure you get the shifter assembly with it regardless of which way you go.

bigtruck81 · 07-05-2007, 10:06 PM

Quote:

Originally Posted by Russell

I think that most if not all NP203s are 32 spline units, but I don't know if the adapters are the same or not.

27 spline 203s are the most common (from behind TH350s), a 32 spline (TH400) 203 is a pretty rare and desirable piece, especially those looking to put a doubler behind a TH400

Russell · 07-06-2007, 01:18 AM

Ah, almost all the 203s I've seen are from TH400s

Not that uncommon around here

07-04-2007, 12:40 AM	#1
bufmatmuslepants Junior Member Join Date: May 2007 Location: Hampstead, NC Posts: 313	found a free NP241, quick queston though buddy has a NP241 hell give me for free, what else would i need to use it to replace my NP203? are the driveshafts the same length? do i need an adaptor? he said he has the driveshafts from the blazer it came out of, will either one of them work? __________________ 1979 K10 reg cab short bed 33x12.50s - GONE 1988 4x4 reg cab long bed 337k miles - GONE 1995 Z71 GU6 G80 F44 ext cab short bed 149k 305/70/16s - GONE 1995 NZZ GT4 2dr Tahoe 3" lift 14 bolt sf 155k 305/70/16s - GONE 1994 Z28 M6 1995 Z71 GT4 G80 ext cab short bed 215k GONE 1997 GT4 G80 Yukon 4 door leather, sunroof 168k miles GONE 2003 Avalanche Z71 GT4 G80 165k miles

07-05-2007, 12:56 AM	#2
bufmatmuslepants Junior Member Join Date: May 2007 Location: Hampstead, NC Posts: 313	Re: found a free NP241, quick queston though nobody has any idea? i have a 203 with a part time kit lined up to buy if i cant fit this 241 please help me figure out what i should do! __________________ 1979 K10 reg cab short bed 33x12.50s - GONE 1988 4x4 reg cab long bed 337k miles - GONE 1995 Z71 GU6 G80 F44 ext cab short bed 149k 305/70/16s - GONE 1995 NZZ GT4 2dr Tahoe 3" lift 14 bolt sf 155k 305/70/16s - GONE 1994 Z28 M6 1995 Z71 GT4 G80 ext cab short bed 215k GONE 1997 GT4 G80 Yukon 4 door leather, sunroof 168k miles GONE 2003 Avalanche Z71 GT4 G80 165k miles

07-05-2007, 12:57 AM	#3
1969k10stepside Registered User Join Date: Mar 2006 Location: USA Posts: 21,019	Re: found a free NP241, quick queston though You are better off asking this in the 4wd section...

07-05-2007, 01:24 AM	#4
bigtruck81 Registered User Join Date: Feb 2004 Location: northern, in Posts: 350	Re: found a free NP241, quick queston though you just need the proper (TH400, or TH350, whichever the case) to NP208 or NP241 adapter. and make sure that the 241 came from behind a 700R4, if not, you'll have to change the input gear on the case.

07-05-2007, 09:28 PM	#5
Russell Professional Grade Join Date: May 2003 Location: Fort McMurray, Alberta Posts: 7,915	Re: found a free NP241, quick queston though An NP241 uses the same adapter as an NP208 does, and should directly replace one. There are 27 (I think) and 32 spline NP241s, you'd need a transmission with the same spline count to bolt it straight up. I think that most if not all NP203s are 32 spline units, but I don't know if the adapters are the same or not. The front driveshaft from the blazer should work in your truck, but you'll probally need to get the rear shaft's length changed. Does the NP241 have an electric speedo, or is it from an 89 with a mechanical speedo drive? Make sure you get the shifter assembly with it regardless of which way you go. __________________ 1995 Chevrolet 2 Door Tahoe (6.6L LBZ Duramax / ZF6 / NP241 with 1 ton solid axle swap)

07-06-2007, 01:18 AM	#7
Russell Professional Grade Join Date: May 2003 Location: Fort McMurray, Alberta Posts: 7,915	Re: found a free NP241, quick queston though Ah, almost all the 203s I've seen are from TH400s Not that uncommon around here __________________ 1995 Chevrolet 2 Door Tahoe (6.6L LBZ Duramax / ZF6 / NP241 with 1 ton solid axle swap)



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