Difference in NP208 & NP241 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

scsindust · 05-26-2009, 04:32 PM

I am working on my 89 3/4 Suburban. It currently has a th400 mated to a NP241. I have a rebuilt 700R4 that I wanted to put into it, which is mated to a NP208. I know the 241 has an electric speedo, as the 208 is mechanical. Is there any other differences that would make me want to keep the 241? Also, I heard the 241 is a direct swap from a 208. Is this true? Thanks for all your help!

tvblazer78 · 05-26-2009, 08:10 PM

Try and see how many splines are on both and if they are the same you should be good to go.

WarBeard · 05-26-2009, 09:39 PM

4lo on the 241 is 2.72:1

2.61 in the 208

241 has a better oiling system and will keep cooler
241 is the best of the aluminum t-cases IMO.

WarBeard · 05-26-2009, 09:41 PM

also id like to add that the 700r4 has a lower first gear if im not mistakin
that combined with the 241 will give you a very nice crawl ratio!

scsindust · 05-26-2009, 09:45 PM

Thanks! I appreciate the input. I don't plan on doing hard wheeling or crawling, but just some weekend fun driving through trails, etc. Hopefully the 241 will swap straight over to the 700.

Jonboy · 05-27-2009, 08:43 AM

the 241 should swap over fine. They came in the 90 & 91 burbs, with a 700R4.

scsindust · 05-27-2009, 09:47 AM

Well on that note, if anyone wants a NP208,

scsindust · 05-27-2009, 09:52 AM

Does the 241 use ATF or gear oil??

72 CustomCamper · 05-27-2009, 12:55 PM

Atf

tvblazer78 · 05-27-2009, 01:00 PM

Quote:

Originally Posted by scsindust

Well on that note,

Sorry man you can not sell stuff if you are not a member. So become one and you can.

Thanks,
Trav

scsindust · 05-27-2009, 01:04 PM

I did register. Doesn't that make me a member? Is there more I have to do? You delete that post if you want about the 208.

tvblazer78 · 05-27-2009, 01:08 PM

Let me try this again, you are a member but not a paying one. Here is the linke to support the board.

http://www.67-72chevytrucks.com/vboard/payments.php

scsindust · 05-27-2009, 01:24 PM

Gottcha. Will do.

tvblazer78 · 05-27-2009, 01:30 PM

Quote:

Originally Posted by scsindust

Gottcha. Will do.

Thank you sir!

scsindust · 06-30-2009, 08:52 PM

I just came across some info that this swap might not work. I saw that NP241 on TH400s have a larger spline than those of 700R4s. So if my 241 wont mate up to the th400, can I use the parts from my NP208 that is currently on my to-be-installed 700r4 and make the 241 work? I guess my only real hangup on the 241 is that it has an elec speedo, which I would need to make it work in the truck. What would be my options if this swap doesn't work as planned? Can I use the 208? How could i make my speedo work with it?

05-26-2009, 04:32 PM	#1
scsindust Registered User Join Date: May 2009 Location: Jessup, MD Posts: 57	Difference in NP208 & NP241 I am working on my 89 3/4 Suburban. It currently has a th400 mated to a NP241. I have a rebuilt 700R4 that I wanted to put into it, which is mated to a NP208. I know the 241 has an electric speedo, as the 208 is mechanical. Is there any other differences that would make me want to keep the 241? Also, I heard the 241 is a direct swap from a 208. Is this true? Thanks for all your help! __________________ Jamie Play truck / kid hauler - 1989 V2500 Burb 4x4, 350, 700R4, 4" lift, headers, elec fans, the normal mods. Getting ready for the LS1 swap!!

05-26-2009, 08:10 PM	#2
tvblazer78 Low & Fast! Join Date: Jan 2007 Location: Knoxville, TN Posts: 3,110	Re: Difference in NP208 & NP241 Try and see how many splines are on both and if they are the same you should be good to go. __________________ Southeastern Mini Truckin' Nationals April 27 and 28, 2012

05-26-2009, 09:39 PM	#3
WarBeard Registered User Join Date: Jul 2008 Location: Show low,az Posts: 808	Re: Difference in NP208 & NP241 4lo on the 241 is 2.72:1 2.61 in the 208 241 has a better oiling system and will keep cooler 241 is the best of the aluminum t-cases IMO. __________________ 1978 C10 Silverado Big 10 350/350.. play toy 1990 V1500 Suburban 350/700r4..Daily driver 1987 K10 Silverado 383/400.. Wife's rig WRECKED! 1989 V2500 Suburban 350/400.. SOLD! 1974 C10 Custom10 LWB 350/350.. SOLD! 1974 C10 Custom10 SWB 350/400.. SOLD! 1999 Silverado Z71 LS1.. Wife's rig WRECKED! On the hunt for a new project....... I'm a Chevy guy.....I'm just not a "NEW" Chevy guy.

05-26-2009, 09:41 PM	#4
WarBeard Registered User Join Date: Jul 2008 Location: Show low,az Posts: 808	Re: Difference in NP208 & NP241 also id like to add that the 700r4 has a lower first gear if im not mistakin that combined with the 241 will give you a very nice crawl ratio! __________________ 1978 C10 Silverado Big 10 350/350.. play toy 1990 V1500 Suburban 350/700r4..Daily driver 1987 K10 Silverado 383/400.. Wife's rig WRECKED! 1989 V2500 Suburban 350/400.. SOLD! 1974 C10 Custom10 LWB 350/350.. SOLD! 1974 C10 Custom10 SWB 350/400.. SOLD! 1999 Silverado Z71 LS1.. Wife's rig WRECKED! On the hunt for a new project....... I'm a Chevy guy.....I'm just not a "NEW" Chevy guy.

05-26-2009, 09:45 PM	#5
scsindust Registered User Join Date: May 2009 Location: Jessup, MD Posts: 57	Re: Difference in NP208 & NP241 Thanks! I appreciate the input. I don't plan on doing hard wheeling or crawling, but just some weekend fun driving through trails, etc. Hopefully the 241 will swap straight over to the 700. __________________ Jamie Play truck / kid hauler - 1989 V2500 Burb 4x4, 350, 700R4, 4" lift, headers, elec fans, the normal mods. Getting ready for the LS1 swap!!

05-27-2009, 08:43 AM	#6
Jonboy Slots go on anything! Join Date: May 2003 Location: Richardson, TX Posts: 5,957	Re: Difference in NP208 & NP241 the 241 should swap over fine. They came in the 90 & 91 burbs, with a 700R4.

05-27-2009, 09:47 AM	#7
scsindust Registered User Join Date: May 2009 Location: Jessup, MD Posts: 57	Re: Difference in NP208 & NP241 Well on that note, if anyone wants a NP208, __________________ Jamie Play truck / kid hauler - 1989 V2500 Burb 4x4, 350, 700R4, 4" lift, headers, elec fans, the normal mods. Getting ready for the LS1 swap!! Last edited by tvblazer78; 05-27-2009 at 01:00 PM.

05-27-2009, 09:52 AM	#8
scsindust Registered User Join Date: May 2009 Location: Jessup, MD Posts: 57	Re: Difference in NP208 & NP241 Does the 241 use ATF or gear oil?? __________________ Jamie Play truck / kid hauler - 1989 V2500 Burb 4x4, 350, 700R4, 4" lift, headers, elec fans, the normal mods. Getting ready for the LS1 swap!!

05-27-2009, 12:55 PM	#9
72 CustomCamper huh ??? Join Date: Nov 2002 Location: Fredericksburg,Va. Posts: 3,369	Re: Difference in NP208 & NP241 Atf __________________ 90 Blazer Silverado 350w/ 700R4 and 32" Kelly's "I am a bomb technician. If you see me running try to keep up!"

05-27-2009, 01:04 PM	#11
scsindust Registered User Join Date: May 2009 Location: Jessup, MD Posts: 57	Re: Difference in NP208 & NP241 I did register. Doesn't that make me a member? Is there more I have to do? You delete that post if you want about the 208. __________________ Jamie Play truck / kid hauler - 1989 V2500 Burb 4x4, 350, 700R4, 4" lift, headers, elec fans, the normal mods. Getting ready for the LS1 swap!!

05-27-2009, 01:08 PM	#12
tvblazer78 Low & Fast! Join Date: Jan 2007 Location: Knoxville, TN Posts: 3,110	Re: Difference in NP208 & NP241 Let me try this again, you are a member but not a paying one. Here is the linke to support the board. http://www.67-72chevytrucks.com/vboard/payments.php __________________ Southeastern Mini Truckin' Nationals April 27 and 28, 2012

05-27-2009, 01:24 PM	#13
scsindust Registered User Join Date: May 2009 Location: Jessup, MD Posts: 57	Re: Difference in NP208 & NP241 Gottcha. Will do. __________________ Jamie Play truck / kid hauler - 1989 V2500 Burb 4x4, 350, 700R4, 4" lift, headers, elec fans, the normal mods. Getting ready for the LS1 swap!!

06-30-2009, 08:52 PM	#15
scsindust Registered User Join Date: May 2009 Location: Jessup, MD Posts: 57	Re: Difference in NP208 & NP241 I just came across some info that this swap might not work. I saw that NP241 on TH400s have a larger spline than those of 700R4s. So if my 241 wont mate up to the th400, can I use the parts from my NP208 that is currently on my to-be-installed 700r4 and make the 241 work? I guess my only real hangup on the 241 is that it has an elec speedo, which I would need to make it work in the truck. What would be my options if this swap doesn't work as planned? Can I use the 208? How could i make my speedo work with it? __________________ Jamie Play truck / kid hauler - 1989 V2500 Burb 4x4, 350, 700R4, 4" lift, headers, elec fans, the normal mods. Getting ready for the LS1 swap!!



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