Gear mesh pattern OK? First rime

[Stranglehold]

Setting up a 489 case with 3.55s. All the guts are new from Dr Diff. Motive gears. .032” pinion shim in there now. Should add a few thou?

 

[Kendog 170]

Looks good to me but I'm no expert.

 

[Icetech]

no input on the pattern as i suck at it.. but am curious what carrier is that? the brand? have never seen one like that before..

 

[65TerrorCuda]

Looks like this one

Mopar 8 3/4" (8.75) Helical Gear Sure-Grip ("Sure-Trac")

 

[Icetech]

Looks like this one

Mopar 8 3/4" (8.75) Helical Gear Sure-Grip ("Sure-Trac")

Ahh! i guess i coulda looked And i have seen exploded views of that... very cool setup. Just never saw actual carrier before

 

[65TerrorCuda]

Ahh! i guess i coulda looked And i have seen exploded views of that... very cool setup. Just never saw actual carrier before

Chipped a tooth on my 8.75 so I've been perusing the site. Nice price too

 

[Icetech]

Chipped a tooth on my 8.75 so I've been perusing the site. Nice price too

yeah.. i had read up on that technology years ago, didn't know drdiffs added more gears.. am curious how they hold up to bigger power? i will never make real power.. but am wondering.

 

[65TerrorCuda]

yeah.. i had read up on that technology years ago, didn't know drdiffs added more gears.. am curious how they hold up to bigger power? i will never make real power.. but am wondering.

It's been out of stock for a while. Curious myself.

 

[Stranglehold]

Looks like this one

Mopar 8 3/4" (8.75) Helical Gear Sure-Grip ("Sure-Trac")

You are correct sir. A little pricier than the clutch style but I wanted to give it a try.

 

[Stranglehold]

yeah.. i had read up on that technology years ago, didn't know drdiffs added more gears.. am curious how they hold up to bigger power? i will never make real power.. but am wondering.

Hopefully, it will handle 400 HP ok. Just a guesstimate of where I might be on my 340. Mainly a cruiser, but I will take it to the track just to see. Would happy enough 12.90s.

 

[Stranglehold]

Ahh! i guess i coulda looked And i have seen exploded views of that... very cool setup. Just never saw actual carrier before

Picture out of the box.

 

[Icetech]

Picture out of the box.

View attachment 1716413454

View attachment 1716413455

thing looks nice

 

[65TerrorCuda]

What bearings does it take?

 

[Stranglehold]

What bearings does it take?

I’m using Timkens. Replaced carrier and inner and outer pinion bearings and races 2” on the carrier journals.

 

[65TerrorCuda]

I’m using Timkens. Replaced carrier and inner and outer pinion bearings and races 2” on the carrier journals.

Thank you! Kinda surprised it has the open carrier journals and not the 1.8" trac-lok(?) ones, but I like it.

 

[RustyRatRod]

I'd leave that RAT where it's at. Looks good.

 

[Stranglehold]

Thank you! Kinda surprised it has the open carrier journals and not the 1.8" trac-lok(?) ones, but I like it.

The old set were 2.76 open. You can spec the size on the bearing journal at Dr diffs in the bearing rebuild kit, either 1.8” or 2.0”