The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Swap TH350--->700R4????

**Captainfab** · 06-20-2016, 11:22 PM

A 700R4 typically works well with the 3.73's. However with those short tires a 3.42 gear might be better. If you were to stay with a TH350, I would switch to a 3.07 rear gear. The 3.73's will also work with the Th350, but your highway rpms are going to be up there.

06-20-2016, 11:22 PM	#2
Captainfab 60-66 Nut Join Date: Mar 2007 Location: Coeur d'Alene, Idaho Posts: 23,246	Re: Swap TH350--->700R4???? A 700R4 typically works well with the 3.73's. However with those short tires a 3.42 gear might be better. If you were to stay with a TH350, I would switch to a 3.07 rear gear. The 3.73's will also work with the Th350, but your highway rpms are going to be up there. __________________ 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