Differential ratio on an automatic trans - Suspension & Steering - Classic Z Car Club Skip to content
Welcome Guest! Please read more information about our club!

Differential ratio on an automatic trans

owenk
in Suspension & Steering

Featured Replies

I have searched the site for the differential ratio that came on a 71 240 with an automatic transmission. I am planning to remove the auto and install a 5 speed and need to know if should also grab the rear end from the donor.

Thanks

As far as I know all the automatic equipped cars in the US came with a 3.54:1 rear gear. A bit better than the 3.36 manual transmission ratio but not as good as a 3.90 or 4.11 would be with a 5 speed.

Create an account or sign in to comment
Go to topic listing

Account

Navigation

Search

Search

Configure browser push notifications
Chrome (Android)
  1. Tap the lock icon next to the address bar.
  2. Tap Permissions → Notifications.
  3. Adjust your preference.
Chrome (Desktop)
  1. Click the padlock icon in the address bar.
  2. Select Site settings.
  3. Find Notifications and adjust your preference.