I guess that you missed the part about 3.54 to 7.17. The 3.08 gears are for a 71, not a 70, they have different offset for the lower gear. I run Dana Spicer gears for everything, if it needs anything extra strength wise, I can get them cryo'd for about $150 no progear necessary with a 10.5" ring gear. You can get a bearing cap support cover, that is about it for aftermarket in a car if you worry about it. Tim
Who sells a 3.50 pro gear for a 70? Who sells any ratio pro gear for a 70?
I need a spare 3.08 ring and pinion for my 70 in the Dodge diesel. Where can I get this?
I can easily buy either for a 9”...
3.0 series are 70U. 71 is a name someone invented because there is a dfference, but its not a corporate name. The “U” is for undercut. They bore the housing for clearance for the pinion teeth. The pinion is not offset. You can put a 3.54 gearset into a 70U. You can put a 3.08 in a standard 70 or 70HD if you clearance the casting for the pinion teeth.
Anyway, its a heavy truck rear end. You can never make it as strong or as light as a good 9”.
If you are stuck on putting an oversized ring and pinion in, you can do that with a 9” too...and they are pro gears with oversized pinion pins.
Just adding to the “here we go again” factor!😂
