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View Full Version : WILL FACTORY BENCH SEAT WORK WITH 6L80E 6SP AT WITH NECESSARY TUNNEL MODS?



rockytopper R.I.P 5-13-2017
05-06-2014, 03:48 PM
Will factory split bench fit with tunnel and floor mods necessary to fit a 6l80e 6sp AT in a 1955 nomad?
Thanks
Rocky

Rick_L
05-06-2014, 06:18 PM
Never done it but I think you can. The tunnel mods aren't that severe from what I've read. It should be ok at the front of the seat. I think the tunnel mods are further to the rear (wider at the back and maybe have to extend it).

rockytopper R.I.P 5-13-2017
05-07-2014, 06:14 AM
THANKS, RICK!!! much appreciated. I'm considering the newer suv ls combos. Now I just need to find out how easy they are to wire in an old classic. The ls1 I did was really easy and striaight foward. This drive by wire and VVT etc may be a hole other cup of tea. I may hire a pro this time so I can hide every thing inside.
Rocky

chevynut
05-07-2014, 08:08 AM
The 6L80E is a huge transmission and I think the tunnel will have to be raised quite a bit, especially at the rear of the tailshaft. You could "cheat" a little and increase the engine angle to lower the tailshaft if you ensure your driveline angles are ok. I still think you will have to modify the tunnel. I don't know anything about the seats so you'd have to try them after the transmission tunnel is modified. Worst case you'd have to modify the seat too, probably not a big deal.

Here's a pic of both the 6L80E and the 4L60E.



http://www.southernperformancesystems.com/Resources/l80eds.gif

http://www.charlietranny.com/4L60E-2ds.JPG

chevynut
05-07-2014, 08:24 AM
Heres's some useful info....

http://www.southernperformancesystems.com/Resources/a4l60e.png

http://www.southernperformancesystems.com/Resources/a6l80e.png

http://www.southernperformancesystems.com/Resources/t6060lightningsh.jpeg

JT56
05-07-2014, 09:33 AM
I have a 4LE80 in mine with no mods and was a tight fit. Looks like the 6 speed will need some tunnel work to fit!

Rick_L
05-08-2014, 07:50 AM
There's some photos on the other site today. BIG bulge in the tunnel.

chevynut
05-08-2014, 09:53 AM
Is it this one?

http://www.picturetrail.com/sfx/album/view/21364920

This is the guy who used MY frame jig that I loaned him for a few months, copied just about every piece of my C4 conversion design, and now acts like the conversion was all his work. I even loaned him one of my frames to build and we swapped it out when he took his car apart. He's never given me any credit for the design or consulting on it with him. I offered some help and opinions during his build, and even offered to help put the body on, but he turned it down. We used to go out and have drinks together and shoot the bull. For some reason he turned into a real dick....I suspect it's partly because of my conservative political views since he's a "double-dipper". He walks right by me and my GF when he's in town and won't even say Hi. Take a look in his album and you can see pics of my jig, along with the transmission hump. I understand he has the car running now.

567chevys
05-08-2014, 10:12 AM
Them Welds on some of that stuff Scares the hell out of me !:eek: