Super 44 rear gear ring gear bolt size - ZR-1 Net Registry Forums

AndrewL · 06-21-2023

Hi guys
I'm looking at buying a 3.90 gearset and it is listed as having 7/16" ring gear bolts (instead of the standard 3/8" bolts).

Am I correct in my understanding that the 7/16" bolts will fit in my 91?

Jagdpanzer · 06-21-2023

If your differential carrier is original the ring gear bolt holes are for 3/8" bolts. The 3.90 gear set you are considering was intended for later Dodge Vipers that also came with Dana Super 44 rear ends with differential carriers drilled for 7/16" ring gear bolts. In your case if the dif is original easiest fix would be to have a machine shop ream out the carrier ring gear bolt holes to fit 7/16" bolts.

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AndrewL · 06-21-2023

Thank you, that exactly answers my question. Much appreciated!

06-21-2023	#1
AndrewL Join Date: Dec 2020 Location: Sydney, Australia Posts: 73	Super 44 rear gear ring gear bolt size Hi guys I'm looking at buying a 3.90 gearset and it is listed as having 7/16" ring gear bolts (instead of the standard 3/8" bolts). Am I correct in my understanding that the 7/16" bolts will fit in my 91?

06-21-2023	#2
Jagdpanzer Join Date: Apr 2007 Location: Northern VA Posts: 2,644	Re: Super 44 rear gear ring gear bolt size If your differential carrier is original the ring gear bolt holes are for 3/8" bolts. The 3.90 gear set you are considering was intended for later Dodge Vipers that also came with Dana Super 44 rear ends with differential carriers drilled for 7/16" ring gear bolts. In your case if the dif is original easiest fix would be to have a machine shop ream out the carrier ring gear bolt holes to fit 7/16" bolts. Sent from my iPhone using ZR-1 Net Registry __________________ Phil Wasinger 1994 Torch Red ZR-1 WAZOO Member George Braml Intake

06-21-2023	#3
AndrewL Join Date: Dec 2020 Location: Sydney, Australia Posts: 73	Re: Super 44 rear gear ring gear bolt size Thank you, that exactly answers my question. Much appreciated!