cutting floor to make a high hump - The 1947 - Present Chevrolet & GMC Truck Message Board Network

qksilver · 11-10-2006, 09:36 PM

Any pix/advice/warnings or how to's, to convert a low hump to a high hump.
I am swapping cabs on my 67 4/4 and want the floor to look factory.
As far as I can tell the floors are a little different in the way they are stamped.
Do I cut out the high hump floor and weld it to the low hump floor?
Will the high hump cover bolt flat to the low hump floor?

Thanks,
Steve

qksilver · 11-10-2006, 09:56 PM

For got to add that the cab I am replacing came with buddy bucket seats

Down south truckin · 11-11-2006, 12:33 AM

good question i'm interested in this information also so TTT for you anybody tried this conversion???

bucket · 11-11-2006, 12:36 AM

me three.

1969k10stepside · 11-11-2006, 12:44 AM

The high hump bolts to the floor,you need to cut out the low hump by using measurements from the high hump and drill holes for the hump to bolt to in your floor.I was/am in the same situation.

PBFAB.COM · 11-11-2006, 12:51 AM

I have a thread in the suspension forum entitled 'Dropmember in a 69 C-10' It has some pics of this conversion.

Bob Moore · 11-11-2006, 01:01 AM

Place the hump in the right spot. Use a sharpy or other marker to outline the high hump and also mark the holes. Pull up the hump and cut inside the bolt circles. There may a crease in the floor(my brother is doing this currently and mentioned the crease).

Make sure you leave enough to support the hump. You can always make the hole bigger but it's hard to make it smaller.

**Yukon Jack** · 11-11-2006, 09:05 AM

I did the reverse of what you are doing but it worked without a hitch so I thought I would chime in. I put a low hump in my 4x4 cab because I was using a body lift and using the low hump helped avoid transfer case shifter issues.

Here are a bunch of pics I took of the 4x4 high hump next to a low hump cut out of a 2wd. They may or may not be of any interest as you do this job.

mac · 11-11-2006, 10:12 AM

Anybody out there have a "low hump" floor panel they wanna donate to a good cause ? I have a nearly perfect 4x4 auto high hump to trade.

Mac --'67 Step, ZZ4

qksilver · 11-11-2006, 11:31 AM

How much of it do you need?
Pm me , I have a parts cab.
Thanks,
Steve

11-10-2006, 09:36 PM	#1
qksilver Senior Member Join Date: Dec 2004 Location: Southern Pines NC Posts: 3,853	cutting floor to make a high hump Any pix/advice/warnings or how to's, to convert a low hump to a high hump. I am swapping cabs on my 67 4/4 and want the floor to look factory. As far as I can tell the floors are a little different in the way they are stamped. Do I cut out the high hump floor and weld it to the low hump floor? Will the high hump cover bolt flat to the low hump floor? Thanks, Steve

11-10-2006, 09:56 PM	#2
qksilver Senior Member Join Date: Dec 2004 Location: Southern Pines NC Posts: 3,853	Re: cutting floor to make a high hump For got to add that the cab I am replacing came with buddy bucket seats

11-11-2006, 12:33 AM	#3
Down south truckin Senior Member Join Date: Feb 2006 Location: Lilburn Georgia Posts: 1,240	Re: cutting floor to make a high hump good question i'm interested in this information also so TTT for you anybody tried this conversion???

11-11-2006, 12:36 AM	#4
bucket Registered User Join Date: Aug 2001 Location: Shawnee, KS Posts: 923	Re: cutting floor to make a high hump me three.

11-11-2006, 12:44 AM	#5
1969k10stepside Registered User Join Date: Mar 2006 Location: USA Posts: 21,019	Re: cutting floor to make a high hump The high hump bolts to the floor,you need to cut out the low hump by using measurements from the high hump and drill holes for the hump to bolt to in your floor.I was/am in the same situation. Last edited by 1969k10stepside; 11-11-2006 at 12:45 AM.

11-11-2006, 12:51 AM	#6
PBFAB.COM Senior Member Join Date: Dec 2003 Location: Mesa,Az Posts: 3,981	Re: cutting floor to make a high hump I have a thread in the suspension forum entitled 'Dropmember in a 69 C-10' It has some pics of this conversion. __________________ www.PorterbuiltFabrication.com Phone: 480-297-2621 E-mail: sales@pbfab.com Find us on FaceBook under Porterbuilt Fabrication Specializing in Chassis and Suspension Components for your Classic Chevrolet Truck. We offer components from the following manufacturers: Porterbuilt Accuair Ridetech (Air Ride Technologies) Air Lift Wilwood Intro Unisteer ECE Gotta Show Air Lift Borgeson CPP Supporting this forum since 2003!

11-11-2006, 01:01 AM	#7
Bob Moore Registered User Join Date: Feb 2004 Location: Tacoma WA Posts: 1,365	Re: cutting floor to make a high hump Place the hump in the right spot. Use a sharpy or other marker to outline the high hump and also mark the holes. Pull up the hump and cut inside the bolt circles. There may a crease in the floor(my brother is doing this currently and mentioned the crease). Make sure you leave enough to support the hump. You can always make the hole bigger but it's hard to make it smaller. __________________ 67 C-20 LWB, tilt, speed alert, vac, 454, T400 67 C-10 SWB, factory air with more to follow

11-11-2006, 09:05 AM	#8
Yukon Jack Post Whore Join Date: Feb 2000 Location: Rose Hill, KS, USA Posts: 12,686	Re: cutting floor to make a high hump I did the reverse of what you are doing but it worked without a hitch so I thought I would chime in. I put a low hump in my 4x4 cab because I was using a body lift and using the low hump helped avoid transfer case shifter issues. Here are a bunch of pics I took of the 4x4 high hump next to a low hump cut out of a 2wd. They may or may not be of any interest as you do this job. __________________ 1970 Blazer with a 400 sbc and 4" lift 1980 Pontiac Trans Am, 455 Oldsmobile 2012 Kawasaki Concours 14

11-11-2006, 10:12 AM	#9
mac Active Member Join Date: Jan 2005 Location: Spokane WA Posts: 166	Re: cutting floor to make a high hump Anybody out there have a "low hump" floor panel they wanna donate to a good cause ? I have a nearly perfect 4x4 auto high hump to trade. Mac --'67 Step, ZZ4

11-11-2006, 11:31 AM	#10
qksilver Senior Member Join Date: Dec 2004 Location: Southern Pines NC Posts: 3,853	Re: cutting floor to make a high hump How much of it do you need? Pm me , I have a parts cab. Thanks, Steve



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