My stock 4.10 pinion gear did not fail, but had cracked on each tooth, stock diff, Inline pro Stage 1 turbo with about 400HP.

I'm sure there are a multitude of reasons why the pinion gear had cracks. Clearances, bearing wear, and more.

I went with 3.63 gears, and Ben's upgraded housing with a solid pinion spacer. New bearings. Time will tell.

 

The diff will most likely go before the trans but once you reinforce one, the next weakest link will break.

 

Solution: Rebuild everything with adamantium.

 

I will be going Puddy when I'm ready to upgrade my diff or if I need to unexpectedly. I called Puddymod with a couple questions, Ben told me he was a little busy and would call back. Couple hours later he did. I spoke with Ben on the phone for at least an hour and he answered every question I had regarding driveline. Call him, he'll definitely point you in the right direction for your goals.

 

 

How do you like the 3.63 gear set?

 

I have not installed the 3.63 yet.

 

Quite simply, I love it. With my turbo setup, I have far fewer traction problems. The reduced RPM at cruise is a wonderful change, and each gear pulls slightly longer, reducing the frantic shifting and allowing the turbo to stabilize.

 

Nice you have ap1 or ap2 trans? Just be carful launching it went the track on Saturday broke an axle first diff blew then went with Puddymod 3.9 now axle broke replaced it today it's good now I really want the 8.8 5.9 kit but then my trans will be the weak link it never ends lol

 

^^ what did you run time/trap speed? And how much whp? I think puddymod will be my next upgrade. With stronger axles. Or maybe even the r200 diff conversion from inlinepro