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**Captainfab** · 05-10-2017, 11:12 PM

This somewhat depends on the rear tire size, but I would go with 3.42's. That is what I have in my Suburban with a TH400 and 275/60R15 tires. An OD gear would be nice for highway cruising with this rear gear and tire combo.

05-10-2017, 11:12 PM	#13
Captainfab 60-66 Nut Join Date: Mar 2007 Location: Coeur d'Alene, Idaho Posts: 23,246	Re: 3.73 or 3.42 This somewhat depends on the rear tire size, but I would go with 3.42's. That is what I have in my Suburban with a TH400 and 275/60R15 tires. An OD gear would be nice for highway cruising with this rear gear and tire combo. __________________ Power Steering Box Adapter Plates For Sale HERE Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE Hydroboost Mounting Plates HERE