SM465/NP241C spline engagement - Pirate4x4.Com : 4x4 and Off-Road Forum

Giviner · 05-09-2010, 05:41 PM

I'm planning on putting the above combo into my Jeep. I've got the 465 with the long, 32 spline output. The 241 I have is from a '98 chev 3/4 ton and has a drivers side output.

I am using the adapter that came with the 465, it is a tad over 10" long and has the round 6 bolt pattern on the t-case end (I believe it must have been in front of a 205 with the long stickout input gear).

So my issue is when I bolt everything together, I only end up with about 7/8" of spline engagement between the 2. Plus, I have to use a clocking ring on the 241 in order to get it up closer to the body otherwise it hangs down like a mofo, so i lose 3/8 from that, bringing me down to 1/2".

Im assuming I have the wrong adapter for this application, or I need to modify the one I do have to work. I'd be walking on thin ice if I ran it this way so I need some another option.

Ideas? Suggestions? Part #'s?

chevypower · 05-09-2010, 06:54 PM

you need a 456 that had a 208 on the back of it, more common then a 465-205 combo so should be easy to track one down.

how much of the output shaft sticks out of the tranny you have now? if i remember right i think mine was just about even with the mounting flange.

Giviner · 05-09-2010, 09:06 PM

Mine is a little over an inch shy of the mounting flange, and the stickout on the t-case is pretty close to 2 inches.

So you're saying there were different lengths of the 32spline output for the 465 depending on the t-case?

chevypower · 05-09-2010, 09:16 PM

yes im not 100% sure but i think the 205 with the round pattern had a shorter output shaft on the 465, but anyways a 241 has the same input dementions as a 208 so thats the trans you want to find or comfirm what trans you have right now would be a start.

b454rat · 05-10-2010, 04:56 AM

In the mid 80s all 4wd 465s had the same length 32 spline. When I swapped my 84 to stick, the tranny was from a mid 85-ish 3/4 that had a 208. I put a 205 and correct adapter off an 86 1 ton. IIRC had a couple inches of engagement.

mudskipper4x4 · 05-10-2010, 04:58 PM

get the adapter for an sm465 to np208 and it will work with the np241.

Davethorik · 05-10-2010, 06:05 PM

Quote:

Originally Posted by Giviner

Mine is a little over an inch shy of the mounting flange, and the stickout on the t-case is pretty close to 2 inches.

So you're saying there were different lengths of the 32spline output for the 465 depending on the t-case?

the sm465/205 32 spline adapter is longer than the 208/241 adapter. there were factory 465/241 combos, but they arent too common, at least around here.

Giviner · 05-10-2010, 08:25 PM

Ok, right on guys that's what i needed to know. I have the wrong adapter for this t-case. I will post up a want ad for the correct one.

Just looked and Advance has one for $276!!! Yikes.

Anyone got one they are looking to get rid of?

chevypower · 05-10-2010, 10:42 PM

Quote:

Originally Posted by Giviner

Ok, right on guys that's what i needed to know. I have the wrong adapter for this t-case. I will post up a want ad for the correct one.

Just looked and Advance has one for $276!!! Yikes.

Anyone got one they are looking to get rid of?

where abouts in alberta are you?

Giviner · 05-11-2010, 04:40 AM

Quote:

Originally Posted by chevypower

where abouts in alberta are you?

Ft. McMurray

05-09-2010, 05:41 PM	#1 (permalink)
Giviner Plan B Join Date: Oct 2007 Member # 101635 Location: AB, Canada Posts: 228	SM465/NP241C spline engagement I'm planning on putting the above combo into my Jeep. I've got the 465 with the long, 32 spline output. The 241 I have is from a '98 chev 3/4 ton and has a drivers side output. I am using the adapter that came with the 465, it is a tad over 10" long and has the round 6 bolt pattern on the t-case end (I believe it must have been in front of a 205 with the long stickout input gear). So my issue is when I bolt everything together, I only end up with about 7/8" of spline engagement between the 2. Plus, I have to use a clocking ring on the 241 in order to get it up closer to the body otherwise it hangs down like a mofo, so i lose 3/8 from that, bringing me down to 1/2". Im assuming I have the wrong adapter for this application, or I need to modify the one I do have to work. I'd be walking on thin ice if I ran it this way so I need some another option. Ideas? Suggestions? Part #'s?

05-09-2010, 06:54 PM	#2 (permalink)
chevypower perfection Join Date: Dec 2006 Member # 83634 Location: calgary alberta Posts: 202	you need a 456 that had a 208 on the back of it, more common then a 465-205 combo so should be easy to track one down. how much of the output shaft sticks out of the tranny you have now? if i remember right i think mine was just about even with the mounting flange. __________________ 84 K30 tubed truggy, built 454,465,208, 60-14 5.13s, 18.4x16.1 tractor tires 93 gmc big block solid axle dually tow pig 95 f250 5speed 4x4 7.3 powerstroke tow rig, 5 inch pipe 71 international 1200 4x4 slow build 97 chevy solid axle 4x4 dd Last edited by chevypower; 05-09-2010 at 06:56 PM.

05-09-2010, 09:16 PM	#4 (permalink)
chevypower perfection Join Date: Dec 2006 Member # 83634 Location: calgary alberta Posts: 202	yes im not 100% sure but i think the 205 with the round pattern had a shorter output shaft on the 465, but anyways a 241 has the same input dementions as a 208 so thats the trans you want to find or comfirm what trans you have right now would be a start. __________________ 84 K30 tubed truggy, built 454,465,208, 60-14 5.13s, 18.4x16.1 tractor tires 93 gmc big block solid axle dually tow pig 95 f250 5speed 4x4 7.3 powerstroke tow rig, 5 inch pipe 71 international 1200 4x4 slow build 97 chevy solid axle 4x4 dd

05-10-2010, 04:58 PM	#6 (permalink)
mudskipper4x4 AllUpInYourFace Join Date: May 2006 Member # 72951 Location: in a van down by the river Posts: 1,629	get the adapter for an sm465 to np208 and it will work with the np241. __________________ 76 CJ-7... mostly chevy parts www.centexoffroad.com

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05-09-2010, 09:06 PM	#3 (permalink)
Giviner Plan B Join Date: Oct 2007 Member # 101635 Location: AB, Canada Posts: 228	Mine is a little over an inch shy of the mounting flange, and the stickout on the t-case is pretty close to 2 inches. So you're saying there were different lengths of the 32spline output for the 465 depending on the t-case?

05-10-2010, 04:56 AM	#5 (permalink)
b454rat Registered User Join Date: Jan 2003 Member # 16536 Location: Binghamton, NY Posts: 2,464	In the mid 80s all 4wd 465s had the same length 32 spline. When I swapped my 84 to stick, the tranny was from a mid 85-ish 3/4 that had a 208. I put a 205 and correct adapter off an 86 1 ton. IIRC had a couple inches of engagement.

05-10-2010, 08:25 PM	#8 (permalink)
Giviner Plan B Join Date: Oct 2007 Member # 101635 Location: AB, Canada Posts: 228	Ok, right on guys that's what i needed to know. I have the wrong adapter for this t-case. I will post up a want ad for the correct one. Just looked and Advance has one for $276!!! Yikes. Anyone got one they are looking to get rid of?