A Quick Easy Way To Determine Axle Ratio

Paul Cangialosi came to my shop to help me do the rebuild on the T5 transmission that’s going into my 1979 Ford Fairmont. We were at the point of trying to figure out what speedometer gear to use when he asked what the gear ratio of the rear end I was going to use was. I said I didn’t know and he said he had a quick way of figuring out what I had.

This will only work on differentials with posi traction. That means that both wheels spin in the same direction when the pinion flange is rotated. If one wheel rotates one way and the opposite wheel the other, this method will not work. If however you have a posi traction rear end like I do, you’re good to go.

I can’t thank Paul Cangialosi enough for his time in the shop that day. I learned a great deal and hope to pass along that knowledge to you.

Camera: Brian Kast

Thanks for watching!

The best place for answers to your automotive questions: http://www.ericthecarguy.com

Visit http://www.5speeds.comfor more helpful information from Paul Cangialosi.

Pauls book on rebuilding manual transmissions: http://www.5speeds.com/cart/index.php?route=product/product&product_id=33

Electronic version of Paul’s book: https://books.google.com/books/about/How_to_Rebuild_and_Modify_High_Performan.html?id=OexeE4mTsZYC

Paul’s YouTube Channel: https://www.youtube.com/user/GearWorldTV

Gear Ratios Explained: http://www.5speeds.com/ratios.html

Discussion about this Video: http://www.ericthecarguy.com/…/61098-a-quick-easy-way-to-determine-axle-ratio#152938

Related Videos:

Discussion about this video:

ETCG FAQ Page: http://www.ericthecarguy.com/faq

EricTheCarGuy code lookup: http://www.ericthecarguy.com/obd-code-lookup

ETCG

Video Title: A Quick Easy Way To Determine Axle Ratio -EricTheCarGuy Video Description: In this video Paul Cangialosi shows us a quick way of figuring out Axle Ratio in a posi traction rear end.Thumbnail: http://www.ericthecarguy.com/images/Youtube_Thumbs/nov/2015/A-Quick-Easy-Way-To-Determine-Axle-Ratio-lg.jpg