Question

I'm pretty sure it was a 904.........Could be wrong though...........I'm sure someone will chime in with the chart..these guys are pretty sharp.

I did the cam and intake and so forth on a 72 318, and changing the gears out to 3.55's really made the car come alive....the speedo was about 10 mph off at 50....It's gonna guzzle though..........but lots of fun.

If your car has 3.23's in it now, I don't think you will have to change the gears necessarily..........If you want to drive it more, I'd leave them in.......driving less with more fun in your foot, lower them a little.