Manual Trans in c-30 question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

jbailly · 10-16-2019, 10:43 AM

Ok guys,
A guy at work has a junk yard dog of a c-30 dump. He claims that they didn't offer a manual trans in C-30s from '80-'85? Seems highly unlikely that in those years a manual wouldn't be available, I know my Dad had an '86 K-10 with a manual trans and at one time I had a different '86 K-10 with a manual trans. I think I'm right, but he also claims the 4 speed in this dump is a Muncie? Not sure that is right either, but I don't think he know exactly what this dump is he bought either.

Jon

**MJN** · 10-16-2019, 11:02 AM

Yes- manuals were available factory in a C-30 in those years. They were the standard transmission on C/K 2,3 series trucks and K-1 series per the vehicle info packet. https://www.gmheritagecenter.com/doc...olet-Truck.pdf

Yes- it is a Muncie 4-speed (SM465) transmission.

This is a page from the 1985 info packet.

geezer#99 · 10-16-2019, 11:08 AM

He’s been Smokin the wrong stuff.
The sm465 was available.
It is a Muncie. Usually called a granny geared trans. First gear was around 6 to 1.

Keith Seymore · 10-16-2019, 11:13 AM

Quote:

Originally Posted by MJN

Yes- manuals were available factory in a C-30 in those years. They were the standard transmission on C/K 2,3 series trucks and K-1 series per the vehicle info packet. https://www.gmheritagecenter.com/doc...olet-Truck.pdf

Yes- it is a Muncie 4-speed (SM465) transmission.

This is a page from the 1985 info packet.

Well done, MJN. I see my work here is complete.

K

jbailly · 10-16-2019, 02:36 PM

Awesome stuff, that's what I thought. Right now you can't get one with a manual trans, but back then you sure could.

Thanks,
Jon

sweetk30 · 10-16-2019, 06:47 PM

i scrapped a all original c30 1982 6.2diesel / sm465 truck .

yes there was man trans offered .

tell him to puff puff pass next time and not smoke as much .

**mongocanfly** · 10-16-2019, 10:21 PM

That's funny....amazing how many "experts" there are out there

**hatzie** · 10-17-2019, 09:54 AM

Quote:

Originally Posted by jbailly

Ok guys,
A guy at work has a junk yard dog of a c-30 dump. He claims that they didn't offer a manual trans in C-30s from '80-'85? Seems highly unlikely that in those years a manual wouldn't be available, I know my Dad had an '86 K-10 with a manual trans and at one time I had a different '86 K-10 with a manual trans. I think I'm right, but he also claims the 4 speed in this dump is a Muncie? Not sure that is right either, but I don't think he know exactly what this dump is he bought either.

Jon

He needs to tell that to my 1985 C10 Custom Deluxe. She had a factory SM465. The 305V8 was almost the only option outside of the deep foam seat and the 4 speed. Apparently it was an LE9 305 since the LF3 didn't come on a Manual trans truck. For a 305 the LE9 wasn't that bad. 165hp & 240ft-lb with 9.5:1 compression. I had to run 89 in her in the summer time she spark knocked if I ran 87 octane in her. Winter was just fine on 87.

jbailly · 10-17-2019, 10:38 AM

What's even funnier, I printed out that sheet you included here and he comes off with "That was only the HD trucks." I gave up at that point and walked away. As far as I know there was no such thing as an "HD C-30" in those days. Like I said I gave up, afterwards I thought to myself, "Never argue with a stupid person they will drag you down to their level and beat you with experience."

Jon

**hatzie** · 10-17-2019, 10:57 AM

Yup.
Arguing with idiots is like playing chess with a pigeon. The bird will knock over all the pieces and strut around the board like it's won.

AFAIK there was never any such thing as an HD model squarebody.
GM didn't make a 3500HD until partway through the GMT400 production years. I'm not sure on the year but Keith likely knows. The GMT400 3500HD was a seriously different truck than the regular 3500. More in common with the 4500 than the 3500.

If you wanted a heavier truck than the 1 ton squares you graduated to the 40-60 series Medium duty grain and dump trucks.

Keith Seymore · 10-17-2019, 11:46 AM

I realize you are probably done arguing with the guy, but here is the powertrain chart showing the 4 speed manual as available in a 1/2 ton trucks (from the same info packet as MJN linked above).

K

jbailly · 10-17-2019, 01:04 PM

Thanks for that Keith. I knew they were available in half tons at least in '86 as I personally know of 2 that had them, also I know of a single wheel '81 one ton that has a manual from the factory, that's what made this original statement seem so odd, but I've never been around a factory dually or cab and chassis from that era, so I thought it could be possible, unlikely but possible.

**mongocanfly** · 10-17-2019, 01:57 PM

my 81 c30 came with 4spd, as did my 86

10-16-2019, 10:43 AM	#1
jbailly Registered User Join Date: Jun 2008 Location: Creekside, PA Posts: 240	Manual Trans in c-30 question Ok guys, A guy at work has a junk yard dog of a c-30 dump. He claims that they didn't offer a manual trans in C-30s from '80-'85? Seems highly unlikely that in those years a manual wouldn't be available, I know my Dad had an '86 K-10 with a manual trans and at one time I had a different '86 K-10 with a manual trans. I think I'm right, but he also claims the 4 speed in this dump is a Muncie? Not sure that is right either, but I don't think he know exactly what this dump is he bought either. Jon __________________ 1967 Chevrolet Impala Sport Sedan Royal Plum Metallic (1967) My Dad ordered it. 33,xxx miles, parked since 1977.

10-16-2019, 11:02 AM	#2
MJN Registered User Join Date: Feb 2000 Location: Maquoketa, Ia/ Orr, Mn Posts: 3,051	Re: Manual Trans in c-30 question Yes- manuals were available factory in a C-30 in those years. They were the standard transmission on C/K 2,3 series trucks and K-1 series per the vehicle info packet. https://www.gmheritagecenter.com/doc...olet-Truck.pdf Yes- it is a Muncie 4-speed (SM465) transmission. This is a page from the 1985 info packet. Attached Images __________________ '51 South Bend Model "9A" '56 Chevy 3600 NAPCO '74 Chevy Cheyenne Super K20-restored on 37's '72 GMC Sierra Custom K2500- in progress '08 GMC Envoy Denali '12 GMC Sierra 2500HD Denali '17 GMC Yukon XL VCCA member #58596 http://www.nohrco.com

10-16-2019, 11:08 AM	#3
geezer#99 Registered User Join Date: Aug 2009 Location: Bowser Posts: 13,732	Re: Manual Trans in c-30 question He’s been Smokin the wrong stuff. The sm465 was available. It is a Muncie. Usually called a granny geared trans. First gear was around 6 to 1.

10-16-2019, 02:36 PM	#5
jbailly Registered User Join Date: Jun 2008 Location: Creekside, PA Posts: 240	Re: Manual Trans in c-30 question Awesome stuff, that's what I thought. Right now you can't get one with a manual trans, but back then you sure could. Thanks, Jon __________________ 1967 Chevrolet Impala Sport Sedan Royal Plum Metallic (1967) My Dad ordered it. 33,xxx miles, parked since 1977.

10-16-2019, 06:47 PM	#6
sweetk30 Registered User Join Date: May 2012 Location: horseheads,ny rust belt Posts: 2,794	Re: Manual Trans in c-30 question i scrapped a all original c30 1982 6.2diesel / sm465 truck . yes there was man trans offered . tell him to puff puff pass next time and not smoke as much . __________________ 77-k30lb BIG truck build . 87-k30lb budget beater build . 85-k30lb the plow machine build . 85-c10sb summer fun toy . ----------------------------- HOLLEY SNIPER efi = worst case of p.i.t.a i ever had . EDELBROCK pro flo 4 = best deal going so far . love my setup works great.

10-16-2019, 10:21 PM	#7
mongocanfly Post Whore Join Date: May 2015 Location: Alabama Posts: 14,670	Re: Manual Trans in c-30 question That's funny....amazing how many "experts" there are out there __________________ Mongo...aka Greg RIP Dad RIP Jesse 1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598 Mongos AD- LS3 TR6060...http://67-72chevytrucks.com/vboard/s...34#post8522334 Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563 2023 Chevy Z71..daily driver

10-17-2019, 10:38 AM	#9
jbailly Registered User Join Date: Jun 2008 Location: Creekside, PA Posts: 240	Re: Manual Trans in c-30 question What's even funnier, I printed out that sheet you included here and he comes off with "That was only the HD trucks." I gave up at that point and walked away. As far as I know there was no such thing as an "HD C-30" in those days. Like I said I gave up, afterwards I thought to myself, "Never argue with a stupid person they will drag you down to their level and beat you with experience." Jon __________________ 1967 Chevrolet Impala Sport Sedan Royal Plum Metallic (1967) My Dad ordered it. 33,xxx miles, parked since 1977.

10-17-2019, 10:57 AM	#10
hatzie Moderator Join Date: Oct 2008 Location: Wentworth, NH Posts: 4,977	Re: Manual Trans in c-30 question Yup. Arguing with idiots is like playing chess with a pigeon. The bird will knock over all the pieces and strut around the board like it's won. AFAIK there was never any such thing as an HD model squarebody. GM didn't make a 3500HD until partway through the GMT400 production years. I'm not sure on the year but Keith likely knows. The GMT400 3500HD was a seriously different truck than the regular 3500. More in common with the 4500 than the 3500. If you wanted a heavier truck than the 1 ton squares you graduated to the 40-60 series Medium duty grain and dump trucks. __________________ 1959 M35A2 LDT465-1D SOLD 1967 Dodge W200 B383, NP420/NP201 SOLD 1969 Dodge Polara 500 B383, A833 SOLD 1972 Ford F250 FE390, NP435/NP205 SOLD 1976 Chevy K20, 6.5L, NV4500/NP208 SOLD 1986 M1008 CUCV SOLD 2000 GMC C2500, TD6.5L, NV4500 2005 Chevy Silverado LS 2500HD 6.0L 4L80E/NP263 2009 Impala SS LS4 V8 RTFM... GM Parts Books, GM Schematics, GM service manuals, and GM training materials... 1973-1991 GM Light Truck Service, Unit/Overhaul, Wiring Manuals, Parts Books and Some 1968-1999 GM Service Training textbooks in PDF 1988-1998 GMT400 CK service manual project 1988-1993 GMT400 CK parts books. 1967-1972 GM Light, Medium, & Heavy Truck Service Manuals in PDF Please include at least the year and model in your threads. It'll be easier to answer your questions. And please let us know if and how your repairs were successful. Last edited by hatzie; 10-17-2019 at 05:54 PM.

10-17-2019, 11:46 AM	#11
Keith Seymore Registered User Join Date: May 2009 Location: Motor City Posts: 9,226	Re: Manual Trans in c-30 question I realize you are probably done arguing with the guy, but here is the powertrain chart showing the 4 speed manual as available in a 1/2 ton trucks (from the same info packet as MJN linked above). K Attached Images __________________ Chevrolet Flint Assembly 1979-1986 GM Full Size Truck Engineering 1986 - 2019 Intro from an Old Assembly Guy: http://67-72chevytrucks.com/vboard/s...d.php?t=342926 My Pontiac story: http://forums.maxperformanceinc.com/...d.php?t=560524 Chevelle intro: http://www.superchevy.com/features/s...hevy-chevelle/

10-17-2019, 01:04 PM	#12
jbailly Registered User Join Date: Jun 2008 Location: Creekside, PA Posts: 240	Re: Manual Trans in c-30 question Thanks for that Keith. I knew they were available in half tons at least in '86 as I personally know of 2 that had them, also I know of a single wheel '81 one ton that has a manual from the factory, that's what made this original statement seem so odd, but I've never been around a factory dually or cab and chassis from that era, so I thought it could be possible, unlikely but possible. __________________ 1967 Chevrolet Impala Sport Sedan Royal Plum Metallic (1967) My Dad ordered it. 33,xxx miles, parked since 1977.

10-17-2019, 01:57 PM	#13
mongocanfly Post Whore Join Date: May 2015 Location: Alabama Posts: 14,670	Re: Manual Trans in c-30 question my 81 c30 came with 4spd, as did my 86 __________________ Mongo...aka Greg RIP Dad RIP Jesse 1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598 Mongos AD- LS3 TR6060...http://67-72chevytrucks.com/vboard/s...34#post8522334 Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563 2023 Chevy Z71..daily driver



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