I've notice in a few threads before that the 4.22 diff is preferred with the 5 speed. I'm just wondering why. For example, I currently (or should) have the 3.9 diff. If I put in a 5 speed, what is th
the 5 speed is almost the same as the 3.77 diff. I started out with a 3.9 and the 5 speed, Sure it cruised at 90 all day but it took too long to get there. With the 4.22, it is quicker off the line a
Hi Eddie, The difference between 4.22 and 3.9 is a 7% reduction. The 5th gear reduction on a 80 to 82 210 transmission is .821 to 1. About 18% reduction. You're right in your assumption, you have bet
And a 69 Sprite would have what ratio rear end? I would imagine it was in the later cars for US markets that would have the shorter rear ends for freeway cruising. But could be wrong. Toby the the ha
I guess that is correct, but I am daily driving a '79 Midget, with the supposedly shorter rear end, and it screams at Interstate speeds. Sounds good, but I wuld fathom a guess that it isn't good for
69 would have the 3.9 unless someone changed it out. They are marked on the outside on the top, just off center on a bit of a boss area with the tooth counts. A 3.9 would have 10/39 stamped on it. Ha
Or, if you cannot find the marks, jack up the rear end, put a chalk mark on the prop shaft u/v joint flange and count how many times it rotates whilst someone turns a rear wheel through 10 revolution
Paul at Morrisservice can have a speedo adapter made that will make any of the speedometers accurate. I chose to run the 3.73 rear end on my Midget with the 5-speed. When you mention freeway driving