what transmission - The 1947 - Present Chevrolet & GMC Truck Message Board Network

82lowrider · 08-22-2009, 09:02 AM

Im new to the forum and new to these types of trucks wen my grandfather had the truck ha dskrewed up the transmission he had it in reverse nd pulled it with his farm tractor(i kno stupid) every gear works now except reverese. and my friend whos a mechanic said its not worth having the transmission rebuilt nd he said buy one. i dont kno what transsmission these trucks had can some body help me out nd tell me what transmission came in the 82 c-10 with a 5.0 motor

3r!c84 · 08-22-2009, 10:17 AM

th350 3speed no overdrive

82lowrider · 08-22-2009, 06:01 PM

Quote:

Originally Posted by 3r!c84

th350 3speed no overdrive

automatic?

heavybullet · 08-22-2009, 06:36 PM

Yes auto.

72 CustomCamper · 08-22-2009, 07:09 PM

Being an 82 it's more than likely a th350C...

Chuck

3r!c84 · 08-22-2009, 07:19 PM

whats that C for?

72 CustomCamper · 08-22-2009, 07:54 PM

It means a turbo 350 with a lock up converter. GM's first try at a turbo trans overdrive...

Chuck

3r!c84 · 08-22-2009, 08:04 PM

ohhh cool how do i know if i got a lock up converter ?

72 CustomCamper · 08-22-2009, 10:32 PM

The trans will have this electrical plug on the drivers side.

3r!c84 · 08-22-2009, 10:41 PM

yep got that.
but u said it was GM's first try at a turbo trans overdrive..?

72 CustomCamper · 08-22-2009, 10:49 PM

I don't remember much, my buddy that has been a trans tech for years was telling us about them...

joe231 · 08-22-2009, 10:59 PM

I have a 350C in my 80 short bed...it has a 4 connector plug in it though (later model).

It will not hurt the transmission to run it with out the lock up converter hooked up...

I did manage to get mine hooked up recently though.

search the faq section for 350C, there is lots of info about hooking them up.
from the factory there was a vacuum switch mounted on the fire-wall above and behind the brake booster that would disengage the converter when the gas pedal is mashed and the vacuum drops, and an extra set of contacts on the brake light switch that disengages the converter when you apply the brakes.

D13 · 08-23-2009, 09:41 AM

NOT an overdrive.
350C is a turbo 350 with a lock up converter. Basically at highway speeds the converter slips a little bit. By putting in a small hydraulic clutch the slip can be eliminated generating 3-5% less heat and improving gas mileage a little.
If it is a 350C than a regular 350 will bolt in place, just won't have a spot for the wire.
350's are cheap and cheap to rebuild too.

3r!c84 · 08-23-2009, 11:42 AM

thank u
how do i know if mine is locking up?

83burban · 08-23-2009, 12:32 PM

RPM will drop by 200-300 when cruising when it is locked

joe231 · 08-23-2009, 12:35 PM

drive at a moderate to low throttle, it will go first to second shift, then second to third then shortly after the shift to third you will feel another small "shift" as the converter locks...it is easy to miss unless you are at idle or just off idle.

asphaltburner · 08-23-2009, 12:52 PM

Yo! I have a rebuild manual for the TH350/TH350C if ya need pics. The TH350 is a good tranny and was used extensively,...my '76 Camaro and my old '73 4x4 flatbed came with one as did most std-duty auto Chevys of the period.
Todd.

82lowrider · 08-24-2009, 08:15 AM

Thanks 4 the help

08-22-2009, 09:02 AM	#1
82lowrider Registered User Join Date: Aug 2009 Location: centereach new york Posts: 18	what transmission Im new to the forum and new to these types of trucks wen my grandfather had the truck ha dskrewed up the transmission he had it in reverse nd pulled it with his farm tractor(i kno stupid) every gear works now except reverese. and my friend whos a mechanic said its not worth having the transmission rebuilt nd he said buy one. i dont kno what transsmission these trucks had can some body help me out nd tell me what transmission came in the 82 c-10 with a 5.0 motor __________________ 82 c-10 project 305 motor with 64,000 miles was my grandpas truck. needs new bed and doors and a rebuilt trannsmission. soon to have 3in cowl hood, 2inch drop, crager ss rims on low profile tires and new paint Last edited by 82lowrider; 08-22-2009 at 09:02 AM.

08-22-2009, 10:17 AM	#2
3r!c84 Badass Join Date: Jan 2009 Location: lox. fl Posts: 4,586	Re: what transmission th350 3speed no overdrive __________________ Think outside the box? -84c10 (1stcar)→My Build← -00 Saturn 5spd drop a gear and disappear! 1/4:13:90

08-22-2009, 06:36 PM	#4
heavybullet Registered User Join Date: Jun 2009 Location: pembroke pines fl Posts: 26	Re: what transmission Yes auto.

08-22-2009, 07:09 PM	#5
72 CustomCamper huh ??? Join Date: Nov 2002 Location: Fredericksburg,Va. Posts: 3,369	Re: what transmission Being an 82 it's more than likely a th350C... Chuck __________________ 90 Blazer Silverado 350w/ 700R4 and 32" Kelly's "I am a bomb technician. If you see me running try to keep up!"

08-22-2009, 07:19 PM	#6
3r!c84 Badass Join Date: Jan 2009 Location: lox. fl Posts: 4,586	Re: what transmission whats that C for? __________________ Think outside the box? -84c10 (1stcar)→My Build← -00 Saturn 5spd drop a gear and disappear! 1/4:13:90

08-22-2009, 07:54 PM	#7
72 CustomCamper huh ??? Join Date: Nov 2002 Location: Fredericksburg,Va. Posts: 3,369	Re: what transmission It means a turbo 350 with a lock up converter. GM's first try at a turbo trans overdrive... Chuck __________________ 90 Blazer Silverado 350w/ 700R4 and 32" Kelly's "I am a bomb technician. If you see me running try to keep up!"

08-22-2009, 08:04 PM	#8
3r!c84 Badass Join Date: Jan 2009 Location: lox. fl Posts: 4,586	Re: what transmission ohhh cool how do i know if i got a lock up converter ? __________________ Think outside the box? -84c10 (1stcar)→My Build← -00 Saturn 5spd drop a gear and disappear! 1/4:13:90

08-22-2009, 10:32 PM	#9
72 CustomCamper huh ??? Join Date: Nov 2002 Location: Fredericksburg,Va. Posts: 3,369	Re: what transmission The trans will have this electrical plug on the drivers side. __________________ 90 Blazer Silverado 350w/ 700R4 and 32" Kelly's "I am a bomb technician. If you see me running try to keep up!"

08-22-2009, 10:41 PM	#10
3r!c84 Badass Join Date: Jan 2009 Location: lox. fl Posts: 4,586	Re: what transmission yep got that. but u said it was GM's first try at a turbo trans overdrive..? __________________ Think outside the box? -84c10 (1stcar)→My Build← -00 Saturn 5spd drop a gear and disappear! 1/4:13:90

08-22-2009, 10:49 PM	#11
72 CustomCamper huh ??? Join Date: Nov 2002 Location: Fredericksburg,Va. Posts: 3,369	Re: what transmission I don't remember much, my buddy that has been a trans tech for years was telling us about them... __________________ 90 Blazer Silverado 350w/ 700R4 and 32" Kelly's "I am a bomb technician. If you see me running try to keep up!"

08-22-2009, 10:59 PM	#12
joe231 Registered User Join Date: Dec 2007 Location: Palmer, Alaska Posts: 13,821	Re: what transmission I have a 350C in my 80 short bed...it has a 4 connector plug in it though (later model). It will not hurt the transmission to run it with out the lock up converter hooked up... I did manage to get mine hooked up recently though. search the faq section for 350C, there is lots of info about hooking them up. from the factory there was a vacuum switch mounted on the fire-wall above and behind the brake booster that would disengage the converter when the gas pedal is mashed and the vacuum drops, and an extra set of contacts on the brake light switch that disengages the converter when you apply the brakes. __________________ *CHEVY ONLY*

08-23-2009, 09:41 AM	#13
D13 Registered User Join Date: Feb 2007 Location: Memphis MI Posts: 1,851	Re: what transmission NOT an overdrive. 350C is a turbo 350 with a lock up converter. Basically at highway speeds the converter slips a little bit. By putting in a small hydraulic clutch the slip can be eliminated generating 3-5% less heat and improving gas mileage a little. If it is a 350C than a regular 350 will bolt in place, just won't have a spot for the wire. 350's are cheap and cheap to rebuild too. __________________ 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

08-23-2009, 11:42 AM	#14
3r!c84 Badass Join Date: Jan 2009 Location: lox. fl Posts: 4,586	Re: what transmission thank u how do i know if mine is locking up? __________________ Think outside the box? -84c10 (1stcar)→My Build← -00 Saturn 5spd drop a gear and disappear! 1/4:13:90

08-23-2009, 12:32 PM	#15
83burban Registered User Join Date: Feb 2008 Location: la Posts: 345	Re: what transmission RPM will drop by 200-300 when cruising when it is locked

08-23-2009, 12:35 PM	#16
joe231 Registered User Join Date: Dec 2007 Location: Palmer, Alaska Posts: 13,821	Re: what transmission drive at a moderate to low throttle, it will go first to second shift, then second to third then shortly after the shift to third you will feel another small "shift" as the converter locks...it is easy to miss unless you are at idle or just off idle. __________________ *CHEVY ONLY* Last edited by joe231; 08-23-2009 at 12:38 PM.



Register or Log In To remove these advertisements.

08-23-2009, 12:52 PM	#17
asphaltburner Registered User Join Date: Jul 2008 Location: Ault, Colorado Posts: 862	Re: what transmission Yo! I have a rebuild manual for the TH350/TH350C if ya need pics. The TH350 is a good tranny and was used extensively,...my '76 Camaro and my old '73 4x4 flatbed came with one as did most std-duty auto Chevys of the period. Todd. __________________ '78 3/4 ton 4x4 custom "Todd-built" FRANKENTRUCK!

08-24-2009, 08:15 AM	#18
82lowrider Registered User Join Date: Aug 2009 Location: centereach new york Posts: 18	Re: what transmission Thanks 4 the help __________________ 82 c-10 project 305 motor with 64,000 miles was my grandpas truck. needs new bed and doors and a rebuilt trannsmission. soon to have 3in cowl hood, 2inch drop, crager ss rims on low profile tires and new paint

Register or Log In To remove these advertisements.