Trans Tunnel Question

[Ken B]

So I am getting ready to swap cabs.....Will a 85 k cab with manual trans replace a 81 cab w/ auto trans?
I recall a discussion about the trans humps,,,,but dont remember which way it will or will not work.

 

[Keith Seymore]

High hump: all 4wd

High hump: all floor shifted trans (both 2wd and 4wd)

Low hump: 2wd column shifted trans

So the answer to your question is "yes".

K

 

[Ken B]

Thanks
I was thinking that was the way it was but not 100% sure....garage is warming and before I started pulling things apart....just double checking....

 

[Corvette Ed]

High hump: all 4wd

High hump: all floor shifted trans (both 2wd and 4wd)

Low hump: 2wd column shifted trans

So the answer to your question is "yes".

K

Thanks for answering a question I had but was afraid to ask.

 

[gmc2u]

FWIW you can use a 2wd automatic cab on a 4x4 if you use the bolt on trans hump from a 73-80 & cut the opening on a 81-87 cab.

 

[K10farmtruck]

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The high hump tunnels can be removed and installed into low hump cabs fairly easily. Here are some photos of when i put a 77 k10 high hump into a 78 c10 low hump cab. Not sure if the 80s were the same. The image of the red tunnel in the cab was when i was mocking it up for the cut. The rear section will be spot welded to the underside of the cab as it was from factory.

 

[BrianCarroll]

Ok needing advice my 1979 was from the factory 2wd with 4 speed truck transmission.
I swaped in a 5.3 ls but still have the sm465 truck trans but now swaping that for a Muncie m20.
Original hump was the high hump trans tunnel.
Will that be to high for the hurst shifter.
Do I need a low hump tunnel but cant find any anywhere.
Looks lihe the low hump tunnels were part on the floor pan and not removable.