Years for Removable trans hump - The 1947 - Present Chevrolet & GMC Truck Message Board Network

MrBeast · 02-08-2012, 10:10 PM

What year did GM stop the removable transmission tunnel on 2wd's and 4x4's?

GM72K10 · 02-08-2012, 10:21 PM

My 1983 K30 dually has the removeable hump

Your41Plague12 · 02-09-2012, 10:39 AM

Quote:

Originally Posted by GM72K10

My 1983 K30 dually has the removeable hump

Funny, my '83 K20 has a hump that was glued in. Maybe they kept it longer in the one tons.

**truckfan** · 02-09-2012, 12:03 PM

i do not think any 2WDs have them unless they have a compound 4 speed. i have owned a dozen 1 tons with 4 speeds up through 89 or 90 and they all had them (makes a clutch or tranny swap lots easier BTW).

MrBeast · 02-08-2012, 10:32 PM

That is good to know, I know that my 85 C30 3+3 did not. It was a solid floor like a burban.

although my 89 blazer had a hump that was glued in

irishman999 · 02-09-2012, 09:00 AM

My 85 K1500 does not have a removable *transmission tunnel.

MrBeast · 02-09-2012, 12:12 PM

The reason i am wondering is I am thinking about buying a late 70's crew cab dually and converting it to a 4x4

GmtGmt · 02-09-2012, 12:19 PM

my 84 c30 does not have nor did the donor cab from the 86 have

arrover · 02-09-2012, 11:24 PM

Did any crew cabs have removable trans humps?

silverbullet01 · 02-10-2012, 06:41 AM

the removable hump was used on trucks with the 4 speed trans. i think,but im not totally sure, but i think all 4 speed trucks had them,automatics did not
Posted via Mobile Device

GmtGmt · 02-10-2012, 06:44 AM

both of the cabs i had where crew and SM456 from factory no hump

silverbullet01 · 02-10-2012, 06:48 AM

hmm. guess im wrong! haha.
Posted via Mobile Device

MrBeast · 02-10-2012, 07:04 AM

There was a point in which they stopped making the removable hump, I cant remember which year it was specifically but in 77 or 78 GM went through and did a major lightening to the bodies going to thinner metal, and they also redesigned some components, I know on the suburban and crew cab when they did this it lightened them by about 400 lbs.

I am not sure if this was when they stopped with the removable floor hump, or if it was in 81 when they did the next major redesign.

Greenlee · 02-10-2012, 09:20 AM

I can verify what others have said. I have an 83' k10 cab and the transmission tunnel was bolted in. My buddy has an 85 k30 and it's not bolted in.
Posted via Mobile Device

Your41Plague12 · 02-10-2012, 12:10 PM

Quote:

Originally Posted by Greenlee

I can verify what others have said. I have an 83' k10 cab and the transmission tunnel was bolted in. My buddy has an 85 k30 and it's not bolted in.
Posted via Mobile Device

Was/is yours a 4 speed? Mine's titled as an '83 GMC K2500 and my transmission hump is glued in like the later ones. Sounds like the transition year is '83 to me.

MrBeast · 02-10-2012, 12:28 PM

Now that I am thinking about it, I think that the Crew Cab and the Burban share the same stamping for the floor. I bet that on regular cabs and blazers they kept the hole, just started gluing them in place.

02-08-2012, 10:10 PM	#1
MrBeast high-Tech Red Neck Join Date: Feb 2008 Location: Livingston, MT/On my boat WA/BC/AK Posts: 2,294	Years for Removable trans hump What year did GM stop the removable transmission tunnel on 2wd's and 4x4's? __________________ "He used to be a pretty nice feller, now he's a welder!"

02-08-2012, 10:21 PM	#2
GM72K10 Next! Join Date: Jan 2003 Location: Eastern Pa. Posts: 2,483	Re: Years for Removable trans hump My 1983 K30 dually has the removeable hump Attached Images __________________ 86 K30 CUCV M1028A1 86 K30 CUCV M1028a2 dually 86 K30 C&C 6.2 4:56s, 4M, 11,000 gvw, ex fire truck, now lowboy dump More square bodies and CUCVs than I care to admit to 2020 Silverado K3500HD Work truck

02-09-2012, 12:03 PM	#4
truckfan Senior Member Join Date: Apr 2009 Location: Lawrence KS Posts: 821	Re: Years for Removable trans hump i do not think any 2WDs have them unless they have a compound 4 speed. i have owned a dozen 1 tons with 4 speeds up through 89 or 90 and they all had them (makes a clutch or tranny swap lots easier BTW). __________________ 1981 Chevy C30 440 Holmes 42K one owner miles

02-08-2012, 10:32 PM	#5
MrBeast high-Tech Red Neck Join Date: Feb 2008 Location: Livingston, MT/On my boat WA/BC/AK Posts: 2,294	Re: Years for Removable trans hump That is good to know, I know that my 85 C30 3+3 did not. It was a solid floor like a burban. although my 89 blazer had a hump that was glued in __________________ "He used to be a pretty nice feller, now he's a welder!"

02-09-2012, 09:00 AM	#6
irishman999 Registered User Join Date: May 2010 Location: Reno Ne-VAH-da Posts: 594	Re: Years for Removable trans hump My 85 K1500 does not have a removable *transmission tunnel.

02-09-2012, 12:12 PM	#7
MrBeast high-Tech Red Neck Join Date: Feb 2008 Location: Livingston, MT/On my boat WA/BC/AK Posts: 2,294	Re: Years for Removable trans hump The reason i am wondering is I am thinking about buying a late 70's crew cab dually and converting it to a 4x4 __________________ "He used to be a pretty nice feller, now he's a welder!"

02-09-2012, 11:24 PM	#9
arrover Registered User Join Date: Sep 2011 Location: NW Arkansas Posts: 291	Re: Years for Removable trans hump Did any crew cabs have removable trans humps?

02-10-2012, 06:41 AM	#10
silverbullet01 Registered User Join Date: Dec 2009 Location: Annapolis Royal Nova Scotia Posts: 56	Re: Years for Removable trans hump the removable hump was used on trucks with the 4 speed trans. i think,but im not totally sure, but i think all 4 speed trucks had them,automatics did not Posted via Mobile Device

02-10-2012, 06:48 AM	#12
silverbullet01 Registered User Join Date: Dec 2009 Location: Annapolis Royal Nova Scotia Posts: 56	Re: Years for Removable trans hump hmm. guess im wrong! haha. Posted via Mobile Device

02-10-2012, 07:04 AM	#13
MrBeast high-Tech Red Neck Join Date: Feb 2008 Location: Livingston, MT/On my boat WA/BC/AK Posts: 2,294	Re: Years for Removable trans hump There was a point in which they stopped making the removable hump, I cant remember which year it was specifically but in 77 or 78 GM went through and did a major lightening to the bodies going to thinner metal, and they also redesigned some components, I know on the suburban and crew cab when they did this it lightened them by about 400 lbs. I am not sure if this was when they stopped with the removable floor hump, or if it was in 81 when they did the next major redesign. __________________ "He used to be a pretty nice feller, now he's a welder!"

02-10-2012, 09:20 AM	#14
Greenlee Registered User Join Date: Jun 2004 Location: El Lago, TX Posts: 1,668	Re: Years for Removable trans hump I can verify what others have said. I have an 83' k10 cab and the transmission tunnel was bolted in. My buddy has an 85 k30 and it's not bolted in. Posted via Mobile Device

02-10-2012, 12:28 PM	#16
MrBeast high-Tech Red Neck Join Date: Feb 2008 Location: Livingston, MT/On my boat WA/BC/AK Posts: 2,294	Re: Years for Removable trans hump Now that I am thinking about it, I think that the Crew Cab and the Burban share the same stamping for the floor. I bet that on regular cabs and blazers they kept the hole, just started gluing them in place. __________________ "He used to be a pretty nice feller, now he's a welder!"



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