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73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Topic started by: stevens on January 27, 2008, 11:17:29 am

Title: 6 speed
Post by: stevens on January 27, 2008, 11:17:29 am

I found this on craigslist and was just wondering if it could be hooked up to my 350? and how hard it would be? Im pretty sure it would haul  :P
 
http://austin.craigslist.org/pts/552778269.html (http://austin.craigslist.org/pts/552778269.html)

78 355 bigten

Title: Re: 6 speed
Post by: Captkaos on January 27, 2008, 11:38:03 am

Yes it can be, but it uses a pull instead of a push setup for the clutch.  That alone required a special flywheel that cost about $400 if you want to stay hydraulic. Plus you will need a speedo converter to work with the mechanical stock setup or change to a electronic speedo ($350)  Plus you have to modify the stock crossmember and shorten the driveshaft.

OR if you want mechanical clutch, you have to get an adapter ($600) and the speedo converter.  And if you don't have the clutch setup already, you will need all of that too ($400).

Or you can get a new aftermarket trans here for about $2300: http://www.sallee-chevrolet.com/BorgWarner/bwt56.cfm

Short answer is, it will cost you to convert one...

Title: Re: 6 speed
Post by: VileZambonie on January 27, 2008, 11:53:58 am

I was once upon a time going to do this coversion but held out. Now I'm glad I did... I can't wait to get my hands on a 6L80  ;D

Title: Re: 6 speed
Post by: Captkaos on January 27, 2008, 12:08:24 pm

Me too.  I just opted for a use Doug Nash 4+1.  If I was going to spend that kind of cash, I would get a Richmond 6 speed with only 1 OD.

Title: Re: 6 speed
Post by: stevens on January 27, 2008, 01:42:18 pm

oh ok haha im still in high school so i dont have that kinda $$ So if it comes with a clutch I would still have to get a flywheel and speedo?  Whats the 6L80?





Thanks,
    Chris 78 355

Title: Re: 6 speed
Post by: choptop on January 27, 2008, 01:47:06 pm

the 6L80 e is the new overdrive tranny used in I believe 96 up trucks, mainly 3/4 tons up.The are very stout. Had one in a work truck with a deisel, truck weight over 13000 pounds, pulled a 16000 pound trailer. we replaced everything but the tranny

Title: Re: 6 speed
Post by: VileZambonie on January 27, 2008, 06:04:49 pm

looks pretty accurate although never believe this website...
http://en.wikipedia.org/wiki/GM_6L80_transmission

Title: Re: 6 speed
Post by: Captkaos on January 28, 2008, 12:35:22 pm

Quote from: stevens on January 27, 2008, 01:42:18 pm

oh ok haha im still in high school so i dont have that kinda $$ So if it comes with a clutch I would still have to get a flywheel and speedo?  Whats the 6L80?
Thanks,
Chris 78 355

Yes, pre-86 motors are different than the 86-99 Vortec motors and way different than LS motors..  Plus you have a mechanical speedo and the 6 speed has a digital sender...

Title: Re: 6 speed
Post by: Dragon on January 28, 2008, 07:42:46 pm

Quote from: VileZambonie on January 27, 2008, 06:04:49 pm

looks pretty accurate although never believe this website...
http://en.wikipedia.org/wiki/GM_6L80_transmission

6L80E with Aluminum Paddle Shifters! :o

Mmmmmm Paddle Shifters........
(http://www.justinbrothers.com/Images/drooling_homer.gif)