The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > General Truck Forums > All 4x4 Tech & Off Roading

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 07-28-2017, 07:26 PM   #1
D13
Registered User
 
D13's Avatar
 
Join Date: Feb 2007
Location: Memphis MI
Posts: 1,851
Length of SM465 and Tcase adapter?

I looked and 'think' I found the answer but wanted to check with people who know. I'm trying to find the length of an SM465 and its T-case adapter, preferably to an NP208C in a square body. Trying to figure out if my A833, out of I think an 1982 K10, 32 spline output to an NP208C, will swap for a 465 with similar output, without getting into drive shafts etc. Neither of us have the 465/208 combo to measure.

What I've come up with is the 465 plus adapter is 19 1/2". Measuring my A833 plus adapter I get 20 1/2". My assumption is that both bell housings are the same length, as my A833 bell is double drilled for both types of trans patterns. Looking at it the another way, the A833 is 26 3/4" engine face to t-case face, and 24 1/2" engine face to trans mount center line.

So is seems the tcase would sit 1" further rearward, needing new holes but the shafts might work. But it seems odd that this GM spec set up would be different length than the 465 combo.



Anyone got the 465 combo laying around they can measure?
Thanks!
__________________
1987 2 ton
1982 250/TH350 beater in progress
Dad's 1981 3/4 L6 3 on tree posi and no options, awaiting restoration or scrapping
Plus a mess o' tractors
D13 is offline   Reply With Quote
Old 08-04-2017, 06:27 AM   #2
D13
Registered User
 
D13's Avatar
 
Join Date: Feb 2007
Location: Memphis MI
Posts: 1,851
Re: Length of SM465 and Tcase adapter?

Come on now, don't be shy. No one has one of these sitting on the floor?

LOL.

Seriously, need to find this out before I decide what to do with this thing.
__________________
1987 2 ton
1982 250/TH350 beater in progress
Dad's 1981 3/4 L6 3 on tree posi and no options, awaiting restoration or scrapping
Plus a mess o' tractors
D13 is offline   Reply With Quote
Old 08-30-2017, 06:05 AM   #3
D13
Registered User
 
D13's Avatar
 
Join Date: Feb 2007
Location: Memphis MI
Posts: 1,851
Re: Length of SM465 and Tcase adapter?

Anyone? Just looking for a tape measure length on the units.
__________________
1987 2 ton
1982 250/TH350 beater in progress
Dad's 1981 3/4 L6 3 on tree posi and no options, awaiting restoration or scrapping
Plus a mess o' tractors
D13 is offline   Reply With Quote
Old 08-30-2017, 11:24 AM   #4
B. W.
Registered User
 
B. W.'s Avatar
 
Join Date: Nov 2014
Location: Bigfork, Montana
Posts: 1,137
Re: Length of SM465 and Tcase adapter?

SM465 - 12"

adapter for NP205 - 7"

sorry, no 208
B. W. is offline   Reply With Quote
Old 08-30-2017, 04:58 PM   #5
mongocanfly
Post Whore

 
mongocanfly's Avatar
 
Join Date: May 2015
Location: Alabama
Posts: 14,670
Re: Length of SM465 and Tcase adapter?

found this on the 208...
NP208 (pictured) / 209 / 228 / 229Manufacturer: New Process GearNumber of speeds: TwoHigh: 1:1Low: 2.69:1Case (or housing) material: AluminumFront output drive type: Chain (driver and passenger side drop)Availability or aftermarket parts and support: LowInput spline count: 23, 27, 31 or 32Rear yoke: Fixed or SlipPlanetary gear: Yes (six-pinion)Available U-joint sizes for yokes: 1310, 1330Flange or slip yoke eliminator available: YesShifter type: MechanicalWeight: ~79 poundsLength: ~18 inches (mount face-to-yoke center)Commonly found in: '80s fullsize Jeep Cherokee & fullsize domestic truck
mongocanfly is offline   Reply With Quote
Old 08-30-2017, 05:01 PM   #6
mongocanfly
Post Whore

 
mongocanfly's Avatar
 
Join Date: May 2015
Location: Alabama
Posts: 14,670
Re: Length of SM465 and Tcase adapter?

and this on the sm465
Attached Images
 
mongocanfly is offline   Reply With Quote
Old 08-30-2017, 05:07 PM   #7
mongocanfly
Post Whore

 
mongocanfly's Avatar
 
Join Date: May 2015
Location: Alabama
Posts: 14,670
Re: Length of SM465 and Tcase adapter?

and this on the trans and adapter...
.The SM465 is 12” long with an adapter housing of 7.250”. The transmission and transfer case adapter length is approximately19-1/4”. The overall length of the adapter kit is approximately 1” longer than the stock; therefore, driveline modifications may benecessary. The overall assembled length including the bellhousing is 26.250"
mongocanfly is offline   Reply With Quote
Old 08-30-2017, 06:37 PM   #8
franken
Registered User
 
Join Date: Jun 2013
Location: Somewhere
Posts: 3,123
Re: Length of SM465 and Tcase adapter?

I crawled under the truck and measured. I got ~21" maybe a hair less for the trans and adaptor. Its about an 85 465/208 round pattern, which should make it a 32 spline. Its in a 72 truck so I can't be exact on the year...
franken is offline   Reply With Quote
Old 08-30-2017, 08:37 PM   #9
OldCreek
Registered User
 
OldCreek's Avatar
 
Join Date: Jan 2007
Location: Central Coast California
Posts: 1,026
Re: Length of SM465 and Tcase adapter?

A straight line from right edge of the bell housing face to right side end of adapter is 27 1/8" on my '84 k10. (SM465 to np208 with long foot adapter). I figure if I measured square from the bell housing it would be somewhere less than that...maybe 26 3/4?

Wil
__________________
1972 K20 Suburban 5.7/700r4/NP205 Dana 44/H052 Sold
1972 C10 5.3L/4L60E 12bolt 5Lug - Sold
1971 K5 Blazer 6.0L LQ9 4L60E NP205 Dana 44/H052!!!
1970 K3500 1ton CrewCab 8.1L/Allison1000/NP205 Dana 60/14B!!!! - Sold
1984 K10 SWB 7.4L/4L80e/NP208 Corp 10/12 bolt Sold
1988 V30 CCLB 7.4L/TH400/NP205/Dana 60/Dana 70/3.73!!! (Sold)
2003 K2500HD 8.1/Allison1000/NP263
OldCreek is offline   Reply With Quote
Reply

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 09:38 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com