montvaleplace

Does anyone out there know how to externally tell what the gear ratio is on my 1971 Toronado fwd trans/diff? I thought there was two different ones available?

jaunty75

The '71 dealer specs book shows only a single "power team" for the Toronado. 455 V-8, TH 400 transmission, 3.07 gear ratio.

montvaleplace

Thanks for that, I guess I heard wrong. I wonder if there was any other ratios available for any other year or maybe in Cadillac.

jaunty75

Yes, beginning the following year. In 1972, the Toronado standard gear ratio was 2.73. The 3.07 ratio was an option that was recommended if doing trailer towing and was required on California cars. It was the same for 1973. I don't have the info for later years on hand.

montvaleplace

That must have been what I heard. Thanks for your assistance..

2blu442

The early years, I think 66-67 were lower. If my memory is right they were a 3.23

joe_padavano

^^^THIS. The 66-67 cars came with 3.21 gears.

montvaleplace

I would like to find one of these 3.21 units or one with higher numbers if it will fit my 71 trans.

montvaleplace

One of the guys on the Cadillac Lasalle club site gave me this link. I thought I would share it in case anyone else was interested.https://www.gmcrvparts.com/category-s/149.htm

montvaleplace

I probably will go for a 3.42 or 3.55 depending on availability. It's for my project vista that I bought a few years ago and haven't gotten very far on. I rebuilt the motor and trans but need to redesign the rear suspension for better safety. The previous builder took the frame and drivetrain from a 71 toro and cut the vista frame out of the back of the vista and put the toro one in.

Greg Rogers

Montevaleplace- That thing is amazing!! I'm sure everyone would like to take a better look at it! Why not start a thread on that car, or if you already one have bump it up, I would like to learn more about that one!!