T-Case Q. - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Kager67 · 10-08-2008, 08:25 PM

My 78 blazer's 203 t-case chain has started slipping, so I am considering putting a 241 in its place. A guy I know has a 88 suburban that is complete and is willing to give me what I need off it. Is this a feasable swap? The burban came with a 350/700r/241 combo. Will the driveshafts work? Any other problems before I start? Thanks

Kager

72 CustomCamper · 10-08-2008, 10:55 PM

The NP241 is for an electronic speedo. An NP208 is the same case but for cable speedo. Also the 203 has a driveshaft flange bolted to the case where the 241/208's have a slip yoke...

Chuck

Burt4x4 · 10-09-2008, 09:10 AM

I would swap in a 205 instead. eaither way you will need the adapter that goes between your tranny and your 'new' transfer case and your drivelines 'may' need to be resized. THe 205 would be the closest to what you have now.
.02c
Burt

**kwmech** · 10-09-2008, 10:25 AM

Quote:

Originally Posted by 72 CustomCamper

The NP241 is for an electronic speedo. An NP208 is the same case but for cable speedo. Also the 203 has a driveshaft flange bolted to the case where the 241/208's have a slip yoke...

Chuck

A 241 in a late model 1988 Suburban (pass drop) will be a mechanical speedo. Gm only had these for about 1-1/2 years. they went to electronic in 1990 on the straight axle.

*FormerMember* · 10-09-2008, 11:38 AM

Quote:

Originally Posted by kwmech

A 241 in a late model 1988 Suburban (pass drop) will be a mechanical speedo. Gm only had these for about 1-1/2 years. they went to electronic in 1990 on the straight axle.

Also, although both cases are aluminum and they both use chains, beyond that they are remarkable different (208/241)

231 and 241 are more similiar, but still not the same.

**kwmech** · 10-09-2008, 03:24 PM

When was the 231 availble in a full size?

*FormerMember* · 10-09-2008, 10:52 PM

Quote:

Originally Posted by kwmech

When was the 231 availble in a full size?

Full size Jeeps

Blazers as well.

10-08-2008, 08:25 PM	#1
Kager67 what knocking sound? Join Date: Feb 2005 Location: good ol North Dakota Posts: 148	T-Case Q. My 78 blazer's 203 t-case chain has started slipping, so I am considering putting a 241 in its place. A guy I know has a 88 suburban that is complete and is willing to give me what I need off it. Is this a feasable swap? The burban came with a 350/700r/241 combo. Will the driveshafts work? Any other problems before I start? Thanks Kager __________________ 1968 C-10 1953 belair two-door post 1955 chevy 3600 big window 1950 studebaker starlite coupe 1968 Impala SS

10-08-2008, 10:55 PM	#2
72 CustomCamper huh ??? Join Date: Nov 2002 Location: Fredericksburg,Va. Posts: 3,368	Re: T-Case Q. The NP241 is for an electronic speedo. An NP208 is the same case but for cable speedo. Also the 203 has a driveshaft flange bolted to the case where the 241/208's have a slip yoke... Chuck __________________ 90 Blazer Silverado 350w/ 700R4 and 32" Kelly's "I am a bomb technician. If you see me running try to keep up!"

10-09-2008, 09:10 AM	#3
Burt4x4 Registered User Join Date: Feb 2000 Location: Modesto, CA Posts: 1,842	Re: T-Case Q. I would swap in a 205 instead. eaither way you will need the adapter that goes between your tranny and your 'new' transfer case and your drivelines 'may' need to be resized. THe 205 would be the closest to what you have now. .02c Burt __________________ 1972 K5 MPFI454/Sm465/Np205/D60/14FFd/Re-Centerd H1s w/Swamper Iroks

10-09-2008, 03:24 PM	#6
kwmech Senior Member Join Date: Mar 2003 Location: Colfax-California Posts: 8,659	Re: T-Case Q. When was the 231 availble in a full size?



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