Manual 4 speed overdrives???? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Dwaynes56&68 · 04-06-2004, 01:19 AM

Can someone give me the details of this trans? I here they were used in the diesel trucks of the early 80's. Is it a sm465 with a overdrive 4th gear ratio or somthing different? Are the a top loader or shift rods on the outside and last but not, are they available in 4x4 versions with the 205 case? Thanks for any info.

**Captkaos** · 04-06-2004, 02:12 AM

In a word, they were garbage as far as a 4x4 application goes. (all apps if you ask me) They didn't come in 4x4's.

Tom · 04-06-2004, 04:37 AM

basiclly they were a 3sp muncie with an overdrive added or somthing real close to that. They are weak trannys.

**Captkaos** · 04-06-2004, 01:53 PM

Actually they were 75-up Mopar A833's.

Matt_305 · 04-06-2004, 03:57 PM

I thought mine was an SM465, it's a 4-speed going, L-1-2-3-R?

**Captkaos** · 04-06-2004, 05:36 PM

Matt, with the L, yours is a SM465. The A833 wasn't that popular. We are talking about the 3speed with OD (4 forward with 4th being OD)

Tom · 04-06-2004, 06:13 PM

Quote:

Originally posted by Captkaos
Actually they were 75-up Mopar A833's.

Holy crap. No wonder they sucked!

Thanks for the info...

1969 GMC · 04-07-2004, 12:13 AM

actually they were made by New Process, which was (is?) a division of Chrysler...who also made the NP205 transfer case and NP435 transmission, both good strong pieces of equipment, just in case you thought New Process (as a division of Chrysler) couldn't make anything of quality.

Here is an interesting article on the NP-A883. According to this, the tranny came in both GM and Dodge trucks and vans, and was used in 4x4 applications (I don't know about that, though). There were aluminum and cast iron case versions.

Also, these came from the factory behind hemi-equipped cars...if there is any question of their strength...and board member stelth2002 swapped one into his truck behind a hot 292, if you have any more questions PM him.

**Captkaos** · 04-07-2004, 12:35 AM

Quote:

Originally posted by 1969 GMC
Also, these came from the factory behind hemi-equipped cars...if there is any question of their strength...and board member stelth2002 swapped one into his truck behind a hot 292, if you have any more questions PM him.

The OD 833's never came behind a hemi. It was introduced in 1975 when hp was WAY down and the rating on them isn't that strong. (especially for a 4x4 app.) They were more used in Dodge trucks and that is where the reputation of breaking came from. Typically I have only seen them behind 305's and Diesels for the GM trucks, and they were 2WD.

1969 GMC · 04-07-2004, 12:51 AM

i stand corrected. guess i should read what i post links to

Matt_305 · 04-07-2004, 06:05 PM

hey, thanks for clearing that up man

04-06-2004, 01:19 AM	#1
Dwaynes56&68 Registered User Join Date: Aug 2003 Location: Crawfordsville,Oregon Posts: 83	Manual 4 speed overdrives???? Can someone give me the details of this trans? I here they were used in the diesel trucks of the early 80's. Is it a sm465 with a overdrive 4th gear ratio or somthing different? Are the a top loader or shift rods on the outside and last but not, are they available in 4x4 versions with the 205 case? Thanks for any info. __________________ Are we there yet?

04-06-2004, 02:12 AM	#2
Captkaos www.73-87chevytrucks.com Join Date: Dec 1999 Location: Birmingham, AL Posts: 6,935	In a word, they were garbage as far as a 4x4 application goes. (all apps if you ask me) They didn't come in 4x4's. __________________ Chris Lucas 1973 Chevy C-10 1978 GMC Jimmy (2WD) - SOLD 1987 R10 twin turbo LS 1991 R3500 SRW CrewCab 1985 K5 diesel swapped project 1989 K5 2WD conversion w/ Vette susp Project Captkaos Customs 73-87chevytrucks.com

04-06-2004, 04:37 AM	#3
Tom driving is in my blood Join Date: Dec 1999 Location: Mesa AZ Posts: 5,748	basiclly they were a 3sp muncie with an overdrive added or somthing real close to that. They are weak trannys. __________________ -78 c10 short/step: 388cid, M20, 5/5 drop, lots more. Playtoy and first vehicle. -98 c1500 x-cab: 5.7L, 17" rims, 5/6 drop, flowmaster, helper bags,NBS rear disk brakes. -02 Suburban 4x4: leveled front -CBR600F4i, CBR600RR, CBR1000RR, and standup skis DISCLAIMER: I cant spell for the life of me.

04-06-2004, 01:53 PM	#4
Captkaos www.73-87chevytrucks.com Join Date: Dec 1999 Location: Birmingham, AL Posts: 6,935	Actually they were 75-up Mopar A833's. __________________ Chris Lucas 1973 Chevy C-10 1978 GMC Jimmy (2WD) - SOLD 1987 R10 twin turbo LS 1991 R3500 SRW CrewCab 1985 K5 diesel swapped project 1989 K5 2WD conversion w/ Vette susp Project Captkaos Customs 73-87chevytrucks.com

04-06-2004, 03:57 PM	#5
Matt_305 Registered User Join Date: Dec 2003 Location: Nova Scotia, Canada Posts: 102	I thought mine was an SM465, it's a 4-speed going, L-1-2-3-R? __________________ 1981 GMC Sierra 1500 4.1L I6 1985 GMC Sierra 1500 5.0L V8 (Parts Truck)

04-06-2004, 05:36 PM	#6
Captkaos www.73-87chevytrucks.com Join Date: Dec 1999 Location: Birmingham, AL Posts: 6,935	Matt, with the L, yours is a SM465. The A833 wasn't that popular. We are talking about the 3speed with OD (4 forward with 4th being OD) __________________ Chris Lucas 1973 Chevy C-10 1978 GMC Jimmy (2WD) - SOLD 1987 R10 twin turbo LS 1991 R3500 SRW CrewCab 1985 K5 diesel swapped project 1989 K5 2WD conversion w/ Vette susp Project Captkaos Customs 73-87chevytrucks.com

04-07-2004, 12:13 AM	#8
1969 GMC Registered User Join Date: Feb 2003 Location: The Rubber City Posts: 5,498	actually they were made by New Process, which was (is?) a division of Chrysler...who also made the NP205 transfer case and NP435 transmission, both good strong pieces of equipment, just in case you thought New Process (as a division of Chrysler) couldn't make anything of quality. Here is an interesting article on the NP-A883. According to this, the tranny came in both GM and Dodge trucks and vans, and was used in 4x4 applications (I don't know about that, though). There were aluminum and cast iron case versions. Also, these came from the factory behind hemi-equipped cars...if there is any question of their strength...and board member stelth2002 swapped one into his truck behind a hot 292, if you have any more questions PM him. __________________ 1969 GMC K2500 1996 Honda Accord 2007 Kawasaki KLR 650

04-07-2004, 12:51 AM	#10
1969 GMC Registered User Join Date: Feb 2003 Location: The Rubber City Posts: 5,498	i stand corrected. guess i should read what i post links to __________________ 1969 GMC K2500 1996 Honda Accord 2007 Kawasaki KLR 650

04-07-2004, 06:05 PM	#11
Matt_305 Registered User Join Date: Dec 2003 Location: Nova Scotia, Canada Posts: 102	hey, thanks for clearing that up man __________________ 1981 GMC Sierra 1500 4.1L I6 1985 GMC Sierra 1500 5.0L V8 (Parts Truck)

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