Is front half of transmission hump removable? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

BigSix · 07-31-2015, 03:29 PM

Before I start prying and permanently damage anything LOL I figured I would ask the experts...I have the transmission cover unbolted but I still need to remove the section in front of it. Looks like part is seam sealed and the other part doesn't have fasteners and I can't tell if it is spot welded? I can reweld the spot welds if that is all it is...any tips or tricks on its removal without trashing the piece or the floor?

PBFAB.COM · 07-31-2015, 03:50 PM

Quote:

Originally Posted by BigSix

Before I start prying and permanently damage anything LOL I figured I would ask the experts...I have the transmission cover unbolted but I still need to remove the section in front of it. Looks like part is seam sealed and the other part doesn't have fasteners and I can't tell if it is spot welded? I can reweld the spot welds if that is all it is...any tips or tricks on its removal without trashing the piece or the floor?

It is spot welded to the firewall. The only way it's removable is by drilling out the spot welds.

Nate

BigSix · 07-31-2015, 03:53 PM

Thank you. The panel is not at all rusty but it is so tough to see where it is welded! Hopefully hitting it with the cup wheel will make things shiny and easy to see. I have to drill from inside the cab so at least I have that going for me.

PBFAB.COM · 07-31-2015, 04:24 PM

Quote:

Originally Posted by BigSix

Thank you. The panel is not at all rusty but it is so tough to see where it is welded! Hopefully hitting it with the cup wheel will make things shiny and easy to see. I have to drill from inside the cab so at least I have that going for me.

That's how we find them! Clean it off a little and they will start presenting themselves.... there's always a couple that stay hidden and give you a surprise!

jonzcustomshop · 07-31-2015, 11:28 PM

the one that I did I found that it looked like the factory spot welded it right through the seam sealer, also the spots didn't really line up front to back, it was as if the spot welding tips were at an angle..

I use a heavy wire cup brush on the 4 1/2 in grinder and run over the seam, it will start to burn the paint/rust off, and leave a little bit in the divot where the spot is.

padresag · 07-31-2015, 11:45 PM

some of the 60- 62 were removable at the firewall. perhaps it was only GMC with hydra-matic trans

ron

**argonaut** · 07-31-2015, 11:50 PM

I drilled the spot welds on mine then installed it woth 5/16" bolts. I tack welded the nuts on the engine side of the firewall so that I could easily remove both bottom and top sections of the hump.

padresag · 08-01-2015, 12:00 AM

Quote:

Originally Posted by argonaut

I drilled the spot welds on mine then installed it woth 5/16" bolts. I tack welded the nuts on the engine side of the firewall so that I could easily remove both bottom and top sections of the hump.

that is somewhat the same as what I just showed only mine was orig
ron

**argonaut** · 08-01-2015, 12:20 AM

Yeah, I remember a 62 I had where the upper section and lower hump were both bolted in.

jonzcustomshop · 08-01-2015, 12:35 AM

Quote:

Originally Posted by padresag

some of the 60- 62 were removable at the firewall. perhaps it was only GMC with hydra-matic trans
ron

Quote:

Originally Posted by argonaut

Yeah, I remember a 62 I had where the upper section and lower hump were both bolted in.

that helps explain a 62-63 gmc cab I have! I always thought it was a big truck cab because of the bolt in front panel- (as far as I can tell all the 50 series and up trucks had the bolt in hump) -but it had custom trim, and did not have a few of the other signs of being a big truck.

BigSix · 08-01-2015, 11:06 AM

Thanks guys. I am going to also bolt it in afterward because it might provide some needed access to the gigantic OD 5speed I have in there right now. I had to put the transmission in sideways and then straighten it after it gets through the tunnel!

padresag · 08-01-2015, 12:36 PM

Quote:

Originally Posted by BigSix

Thanks guys. I am going to also bolt it in afterward because it might provide some needed access to the gigantic OD 5speed I have in there right now. I had to put the transmission in sideways and then straighten it after it gets through the tunnel!

easier and possibly less damaging to put those trans in from the bottom. did have one in mine behind a 4 cyl detroit
. standard hump was all that was required
ron

BigSix · 08-01-2015, 03:16 PM

Got it off. Just a small tweak on the floorboard afterward and everything is good to go. Glad it all fit without cutting.

**argonaut** · 08-01-2015, 11:28 AM

Thats why I did it. It gives easy access to the bellhousing bolts and the back of the motor.

07-31-2015, 03:29 PM	#1
BigSix Registered User Join Date: Mar 2014 Location: MD/VA/PA Or Inbetween Posts: 413	Is front half of transmission hump removable? Before I start prying and permanently damage anything LOL I figured I would ask the experts...I have the transmission cover unbolted but I still need to remove the section in front of it. Looks like part is seam sealed and the other part doesn't have fasteners and I can't tell if it is spot welded? I can reweld the spot welds if that is all it is...any tips or tricks on its removal without trashing the piece or the floor?

07-31-2015, 03:53 PM	#3
BigSix Registered User Join Date: Mar 2014 Location: MD/VA/PA Or Inbetween Posts: 413	Re: Is front half of transmission hump removable? Thank you. The panel is not at all rusty but it is so tough to see where it is welded! Hopefully hitting it with the cup wheel will make things shiny and easy to see. I have to drill from inside the cab so at least I have that going for me.

07-31-2015, 11:28 PM	#5
jonzcustomshop 1961 crewcab Join Date: Dec 2007 Location: missoula, mt Posts: 6,164	Re: Is front half of transmission hump removable? the one that I did I found that it looked like the factory spot welded it right through the seam sealer, also the spots didn't really line up front to back, it was as if the spot welding tips were at an angle.. I use a heavy wire cup brush on the 4 1/2 in grinder and run over the seam, it will start to burn the paint/rust off, and leave a little bit in the divot where the spot is. __________________ 60 build: http://67-72chevytrucks.com/vboard/s...d.php?t=280904 61 crew build: http://67-72chevytrucks.com/vboard/s...d.php?t=646830 63 build: http://67-72chevytrucks.com/vboard/s...d.php?t=336537 64 'burb build: http://67-72chevytrucks.com/vboard/s...d.php?t=448681 65 'burb build: http://67-72chevytrucks.com/vboard/s...d.php?t=590715 65 build: http://67-72chevytrucks.com/vboard/s...d.php?t=281955

07-31-2015, 11:45 PM	#6
padresag Registered User Join Date: Feb 2008 Location: Sidney,b.c. Posts: 4,425	Re: Is front half of transmission hump removable? some of the 60- 62 were removable at the firewall. perhaps it was only GMC with hydra-matic trans ron

07-31-2015, 11:50 PM	#7
argonaut Senior Member Join Date: Aug 2008 Location: Long Beach, CA Posts: 1,813	Re: Is front half of transmission hump removable? I drilled the spot welds on mine then installed it woth 5/16" bolts. I tack welded the nuts on the engine side of the firewall so that I could easily remove both bottom and top sections of the hump. __________________ Jason M. @argonaut62 1972 K5 Blazer CST, Turquoise 1966 K20 Short Fleet Pickup, Big Ugly 1964 C10 Short Fleet, Gertrude 2001 Porsche 911 Carrera 1996 Ford Bronco XLT 1980 Jeep Wagoneer 2008 Honda CBR1000RR 2005 Honda RC51 1981 Honda CB750C No dis-assemble Johnny Five! No dis-assemble!

08-01-2015, 12:20 AM	#9
argonaut Senior Member Join Date: Aug 2008 Location: Long Beach, CA Posts: 1,813	Re: Is front half of transmission hump removable? Yeah, I remember a 62 I had where the upper section and lower hump were both bolted in. __________________ Jason M. @argonaut62 1972 K5 Blazer CST, Turquoise 1966 K20 Short Fleet Pickup, Big Ugly 1964 C10 Short Fleet, Gertrude 2001 Porsche 911 Carrera 1996 Ford Bronco XLT 1980 Jeep Wagoneer 2008 Honda CBR1000RR 2005 Honda RC51 1981 Honda CB750C No dis-assemble Johnny Five! No dis-assemble!

08-01-2015, 11:06 AM	#11
BigSix Registered User Join Date: Mar 2014 Location: MD/VA/PA Or Inbetween Posts: 413	Re: Is front half of transmission hump removable? Thanks guys. I am going to also bolt it in afterward because it might provide some needed access to the gigantic OD 5speed I have in there right now. I had to put the transmission in sideways and then straighten it after it gets through the tunnel!

08-01-2015, 03:16 PM	#13
BigSix Registered User Join Date: Mar 2014 Location: MD/VA/PA Or Inbetween Posts: 413	Re: Is front half of transmission hump removable? Got it off. Just a small tweak on the floorboard afterward and everything is good to go. Glad it all fit without cutting.

08-01-2015, 11:28 AM	#14
argonaut Senior Member Join Date: Aug 2008 Location: Long Beach, CA Posts: 1,813	Re: Is front half of transmission hump removable? Thats why I did it. It gives easy access to the bellhousing bolts and the back of the motor. __________________ Jason M. @argonaut62 1972 K5 Blazer CST, Turquoise 1966 K20 Short Fleet Pickup, Big Ugly 1964 C10 Short Fleet, Gertrude 2001 Porsche 911 Carrera 1996 Ford Bronco XLT 1980 Jeep Wagoneer 2008 Honda CBR1000RR 2005 Honda RC51 1981 Honda CB750C No dis-assemble Johnny Five! No dis-assemble!



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