Rope gasket on transmission floor hump - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**Yukon Jack** · 02-07-2003, 12:46 PM

When I pulled the transmission floor hump I found a rope type gasket that is completely oil soaked.

Is this a part that is available, or should I just buy some similar sized rope and use that?

Longhorn Man · 02-07-2003, 01:07 PM

Call me a brute, but I just used some smurf goo on mine. (Silicone)

mrein3 · 02-07-2003, 01:09 PM

I just used the 3M black tar-like calk (sp?) strips my HVAC buddy gave me. I think they use it to seal up combustion chambers on forced air furnaces.

It was a bear to get to stick right but I wouldn't go without something to seal it up.

lpaine · 02-07-2003, 01:23 PM

Yukon Jack I've been kind of wonderiing about this myself as I am planning to switch my truck over to a standard trans with high hump. I looked at the factory assembly manual, and it isn't much help, although it does mention sealing compound (5/16"bead) for attaching the hump to the floor, I seem to remember someone on here mentioning how to do this some time ago. You should have your answer before sundown anyway. I'll be watching for this one too. lpaine

JimKshortstep4x4 · 02-07-2003, 01:25 PM

We glue the round rubber strip material like is used on the metal door panels using 3M trim Cement. Clamps are used to hold the rubber in place while it drys. Before installing we put the strip caulk in place,(3M) and install the hump.

Jim

02-07-2003, 12:46 PM	#1
Yukon Jack Post Whore Join Date: Feb 2000 Location: Rose Hill, KS, USA Posts: 12,683	Rope gasket on transmission floor hump When I pulled the transmission floor hump I found a rope type gasket that is completely oil soaked. Is this a part that is available, or should I just buy some similar sized rope and use that? __________________ 1970 Blazer with a 400 sbc and 4" lift 1980 Pontiac Trans Am, 455 Oldsmobile 2012 Kawasaki Concours 14

02-07-2003, 01:09 PM	#3
mrein3 Registered User Join Date: Feb 2000 Location: Center City, MN, USA Posts: 3,253	I just used the 3M black tar-like calk (sp?) strips my HVAC buddy gave me. I think they use it to seal up combustion chambers on forced air furnaces. It was a bear to get to stick right but I wouldn't go without something to seal it up. __________________ '70 cab, '71 chassis, 383, TH350, NP205. '71 Malibu convertible '72 Malibu hard top Center City, MN

02-07-2003, 01:23 PM	#4
lpaine Registered User Join Date: Oct 2002 Location: Parksville, B.C. Canada Posts: 637	rope gasket Yukon Jack I've been kind of wonderiing about this myself as I am planning to switch my truck over to a standard trans with high hump. I looked at the factory assembly manual, and it isn't much help, although it does mention sealing compound (5/16"bead) for attaching the hump to the floor, I seem to remember someone on here mentioning how to do this some time ago. You should have your answer before sundown anyway. I'll be watching for this one too. lpaine __________________ 1969 G.M.C 3/4 Ton 920 (Canadian Version) 307 3 speed, currently apart 1998 Chevy 1/2 ton ex cab V-6 5 speed 1967 Chevy SWB - project truck; not started just yet

02-07-2003, 01:07 PM	#2
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Call me a brute, but I just used some smurf goo on mine. (Silicone)

02-07-2003, 01:25 PM	#5
JimKshortstep4x4 Senior Member Join Date: Jul 2001 Location: Muskegon,MI,USA Posts: 6,026	We glue the round rubber strip material like is used on the metal door panels using 3M trim Cement. Clamps are used to hold the rubber in place while it drys. Before installing we put the strip caulk in place,(3M) and install the hump. Jim



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