Axle, ring and pinion identification.

68Roadrunner · Post by **68Roadrunner** » Thu Apr 27, 17 8:15 pm

Hi chaps,
Are the ring and pinions stamped according to which axle ceasing they belong to,because am I right in thinking they are not interchangeable.
Richard.

Pete · Post by **Pete** » Thu Apr 27, 17 8:35 pm

I do not think they are stamped.

The 489 is easy to spot as the pinion is tapered.

The 742 is parallel.

Not sure about a 741 - you are best googling them for measurements....

MilesnMiles · Post by **MilesnMiles** » Thu Apr 27, 17 10:16 pm

My 489 is actually stamped 3.23. Don't think my previous gears had a stamp, though.

68Roadrunner · Post by **68Roadrunner** » Sun Apr 30, 17 9:21 pm

Thanks for the info guys, GoogleðŸ˜€ðŸ‘Richard.

shovelheadrob · Post by **shovelheadrob** » Sun Apr 30, 17 10:04 pm

741 is the smallest pinion 1 1/4 or 1 3/8 iirc, 742 is 1 3/4, both straight & as the wise man said 489 is the tapered one & also he strongest. Some gear sets have the ratio stamped on them, but for many you'll need to count the teeth.

Mopar Muscle Association UK

Axle, ring and pinion identification.

Axle, ring and pinion identification.

Ring and pinion id