how do i find out what the drive gear is on my th350
Thread Starter
Member
iTrader: (2)
Joined: Oct 2004
Posts: 153
Likes: 0
From: moline, il
Car: 82 z28
Engine: 350
Transmission: TH350
Axle/Gears: 10 bolt 3.73
how do i find out what the drive gear is on my th350
i need to find out how many teeth are on my drive gear so i can calculate what driven gear i need what is the easiest way to figure this out? do i just take off the tailshaft and its right there?
Moderator

Joined: Jul 1999
Posts: 17,262
Likes: 168
From: 51°N 114°W, 3500'
Car: 87 IROC L98
Engine: 588 Alcohol BBC
Transmission: Powerglide
Axle/Gears: Ford 9"/31 spline spool/4.86
I think all you need to do is pull the tailshaft off to see the speedo drive gear. They're usually color coded so you just need to know what color it is and what color you need to correct the speedo.
Supreme Member
Joined: Mar 2002
Posts: 1,654
Likes: 2
From: Lower Salford, PA
Car: 1987 Camaro Z-28
Engine: 6.3L Victor EFI
Transmission: Tremec TKO 600
Axle/Gears: Moser 9"/4.11 Trac-Lok
Remove the tailshaft. The drive gear is held onto the output shaft by a special clip. Count the teeth. After being in hot trans fluid for one or more decades the color has a way of changing, greens go blue, reds go pink. I worked dealership parts counters for many years & found you can't rely on the color, unless it's a new gear.
Thread
Thread Starter
Forum
Replies
Last Post





