GasketDude

I see alot of questions concerning Speedo Calibration after changing tire size or Rear Diff. ratios (3.08,3.73,4.11,ect.). I have an Excel spreedsheet with Drive and Driven Gears listed with GM part #'s. And a calculation sheet to help find the correct combo of gears. How do I attach an Excel spreedsheet here?

Now this file has alot of gears listed but it's not totally completed, still has some revisions to go yet. Most of the Driven gears (at Speedo Adaptor/Trans)
are used between transmission styles but may need only a sleeve to complete installation. Basically by combining different Drive and Driven gears one can usually get calibration very close = 5% error max.

lostpatrolman

You need to upload the file to a website. Then leave the link for where it is located. I am sure you could send the file to someone and they could put it up on their site to share.

i885744

i can host it for ya, email me the excel file, mikecooki885744@hotmail.com

jaketerk

My speedo is 10mph under....I'd love see your file so I can fix it! :hurray:

terryrudy

Please send it to me at corvettefaq@hotmail.com and I'll put it on corvettefaq.com.
thanks!
-terry

GasketDude

Was checking some of the part numbers on a GM website earlier. Some of these numbers are older and may have been superseded or discontinued. I need to check this out further first.

Thanks folks for the info/offers, I'll keep keep researching and repost.