Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - T56 2nd gear, not in this world....
View Single Post
  #7 (permalink)  
Old 09-28-2012, 08:08 AM
AutoGear AutoGear is offline
Registered User
Last photo:
Join Date: Jun 2010
Location: Syracuse, NY
Posts: 3,847
Wiki Edits: 0

Thanks: 3,089
Thanked 655 Times in 540 Posts
Depends on how tall the tire is.

You'll have a pretty awesome launch in 1st gear but Im going to give you a word of caution. Im not trying to be gloom and doom but; if you have the gearbox out of the car, look for the tag on the transmission. It will have a lot of useless numbers but it will ALSO say something like '1386-017' The 3 digits after 1386 (which means Warner Gear T56) is the specific build designator. If you look in the PDF file I posted, in the beginning there is an are that lists assemblies. In the column all the way to the right you'll see that 'tag number' (1386-017 for example) and you'll see the ratios for that particular gearbox on the left. If you have the 3.36:1 1st gear, you can get an awesome launch, but the 3.36 stuff is not nearly as strong as the 2.66 stuff. You have a lot of torque multiplication with that 4.11:1 rear and an input and 1st gear that are rare and soon to be discontinued by the OEM. You can break this stuff if you're too rough.

If you are the one doing the assembly, Tremec has a good manual on their website, and even explains how to use common tools to do most of the job. Its an end loaded case, like an automatic, so some special tools may be required. The GM parts list identifies a lot of parts incorrectly, feel free to use our breakdown. If you have any questions about identifying anything, just ask. PS: Dave Guffey at RPM is one of the best builders in the country. They do stuff for Lingenfelter and Katech.
Reply With Quote