Paging the pros: ZR-1 Rear end gear changes - ZR-1 Net Registry Forums

Sgreg · 01-22-2008

Looks like many of us are considering rear gear changes during the winter. Can anyone give us recommendations on parts ( not ratios ) that seem to work best in our Dana's ? Seems like more than ring and pinion is usually involved. Should we stay with Dana HD stuff and not aftermarket parts ? Viper gears are mentioned a lot; are they quiet and are they compatible ? Lots of questions. Thanks for input.

-=Jeff=- · 01-22-2008

I thought Viper Gears were actually Dana parts...

I am using Yuon gears in my Dana 44 in my 89 with no issues, as long as the person setting them up know his stuff you should get no whine. Don't forget the Speedo correction gears too.

I have bought a set of 3.73 and 4.10 from this place.. the 4.10 is stil in my 89

http://www.ringpinion.com/Default.aspx

Rex Ruby · 01-23-2008

OF course you want to buy quality parts, I used Randys ring and pinion.
Advisable to change the bearings too.
The set up is the important part!

Jagdpanzer · 01-24-2008

If you want to stay with an OEM ring and pinion gear set from Dana your best bet is to go with the Viper gears from an online Mopar parts house like
http://www.mopardiscountparts.com (till end of Feb. you can use coupon code 100 for an extra 5% off)
or try your local Dodge dealer.
P5007043 is the Mopar part number for the 4.10 ratio ring and pinion set.
List price is $319 but with typical discount you should be able get them for around $250 to $265 which is not that much more than a set of aftermarket gears from someone like Yukon.
You should also replace all the bearings and seals while your at it.
Ratech 3012K Deluxe Installation Kit for the 84-96 Corvette Dana 44 Axle comes complete and also includes the side yoke bearings and seals. It sells for $112 plus shipping which is a pretty good deal.
http://ratech.stores.yahoo.net/coax84d44.html
Be sure you tell them that the pinion height is set by shimming the rear pinion bearing on the pinion shaft and not by shimming the bearing cup in the housing like is done on the Viper Dana 44. Otherwise they will send you the larger diameter rear pinion bearing cup shims.
You should find a good shop to do the work if you are not experienced and don't have the necessary special tools. The Corvette Dana 44 is nothing special as far as the expertise needed to properly set one up. Any competent automotive rear axle shop should be able to handle it.

Sgreg · 01-24-2008

Great information; thanks guys.

01-22-2008	#1
Sgreg Join Date: Aug 2006 Location: Texas Posts: 518	Paging the pros: ZR-1 Rear end gear changes Looks like many of us are considering rear gear changes during the winter. Can anyone give us recommendations on parts ( not ratios ) that seem to work best in our Dana's ? Seems like more than ring and pinion is usually involved. Should we stay with Dana HD stuff and not aftermarket parts ? Viper gears are mentioned a lot; are they quiet and are they compatible ? Lots of questions. Thanks for input. __________________ 1991 ZR-1, Black, Black, # 541

01-22-2008	#2
-=Jeff=- Join Date: Jul 2007 Location: Bartlett, IL Posts: 7,169	Re: Paging the pros: ZR-1 Rear end gear changes I thought Viper Gears were actually Dana parts... I am using Yuon gears in my Dana 44 in my 89 with no issues, as long as the person setting them up know his stuff you should get no whine. Don't forget the Speedo correction gears too. I have bought a set of 3.73 and 4.10 from this place.. the 4.10 is stil in my 89 http://www.ringpinion.com/Default.aspx __________________ 1990 Corvette ZR-1 #1051 Watson Headers (2" Primary) - Flowmaster Cats - Borla Catback Late Model IH - Plenum Coilovers - 4.10s Custom Interior NCM Lifetime Member #978

01-23-2008	#3
Rex Ruby Join Date: Feb 2005 Location: Springfield, PA Posts: 372	Re: Paging the pros: ZR-1 Rear end gear changes OF course you want to buy quality parts, I used Randys ring and pinion. Advisable to change the bearings too. The set up is the important part!

01-24-2008	#4
Jagdpanzer Join Date: Apr 2007 Location: Northern VA Posts: 2,661	Re: Paging the pros: ZR-1 Rear end gear changes If you want to stay with an OEM ring and pinion gear set from Dana your best bet is to go with the Viper gears from an online Mopar parts house like http://www.mopardiscountparts.com (till end of Feb. you can use coupon code 100 for an extra 5% off) or try your local Dodge dealer. P5007043 is the Mopar part number for the 4.10 ratio ring and pinion set. List price is $319 but with typical discount you should be able get them for around $250 to $265 which is not that much more than a set of aftermarket gears from someone like Yukon. You should also replace all the bearings and seals while your at it. Ratech 3012K Deluxe Installation Kit for the 84-96 Corvette Dana 44 Axle comes complete and also includes the side yoke bearings and seals. It sells for $112 plus shipping which is a pretty good deal. http://ratech.stores.yahoo.net/coax84d44.html Be sure you tell them that the pinion height is set by shimming the rear pinion bearing on the pinion shaft and not by shimming the bearing cup in the housing like is done on the Viper Dana 44. Otherwise they will send you the larger diameter rear pinion bearing cup shims. You should find a good shop to do the work if you are not experienced and don't have the necessary special tools. The Corvette Dana 44 is nothing special as far as the expertise needed to properly set one up. Any competent automotive rear axle shop should be able to handle it. Last edited by Jagdpanzer; 01-19-2010 at 11:22 PM.

01-24-2008	#5
Sgreg Join Date: Aug 2006 Location: Texas Posts: 518	Re: Paging the pros: ZR-1 Rear end gear changes Great information; thanks guys. __________________ 1991 ZR-1, Black, Black, # 541