8liter

Speedo has been reading high for some time, so I decided to investigate. Pulled the vss and the pinion. I have a 30 tooth gear and pinion. I used the chart and it appears I need a 33 tooth gear and a 32-38 pinion. I've found the gears from PATC, but can't find a 32-38 pinion.... Anyone have these laying around? .

Here's what I've got.

8liter

Ok, I think I figured it out. Pinions are all the same, its how you clock it depending on what size Speedo gear you have. Correct?

12vChapa

Let us know what you find out

dodgenstein

Pinions are various tooth counts and diameters. The housing is offset to compensate for the diametral changes. Find the number of teeth you need, install and align the matching number on the housing and align with the pointer on trans.

8liter

That's the conclusion I came to when putting it back in the trans. Thanks.

sooty

gear vendors uses popular chevy th400 driven gears, with a variety, the ones ive seen are all plastic, is that gear the same application? it just looks different.

8liter

No. It's the gear out of a stock getrag. I said gear vendors meaning who sells them now, not the OD unit manufacturer. Sorry for the confusion.

sooty

I was suspicious, try standardtransmission.com or manualtransmissionpart.com both have huge used parts inventories

BILTIT

My local trans shop had some stuff, have you talked to your local trans shop yet?