ok I am going from an 85 z28 3.08 rear end to a 98 LS1 3.42 rear end and want to keep my speedo as accurate as possible.

I found this information on the site already:
3.23's up require a blue 7-tooth drive gear, plus the following driven gear:
18 tooth (p/n 3987918) Brown = 3.23
19 tooth (p/n 3987919) White = 3.42
20 tooth (p/n 3987920) Blue = 3.45
21 tooth (p/n 3987921) Red = 3.73
22 tooth (p/n 3987922) Gray =3.77
3.08 has an 9-tooth drive gear.


So my question is, can I keep the 9 tooth and if so, what driven gears do I use to match to the 3.42?

Or, what is the part number for the 7 tooth drive gear? (I have a 19 tooth driven gear sitting here on my desk anyways)

 

Look under TH350 (Yes, I know you have a T-5):

http://www.transmissioncenter.net/sp...____va.htm#350

JamesC

 

excellent, thanks!

 

I ordered a set of gears from the link you posted and got great service. Only took about 3 days to get my parts.