DoubleDingo
Full Access Member
- Joined
- Jul 3, 2012
- Posts
- 10,184
- Reaction score
- 14,492
- Location
- Right where I am
- First Name
- Bagoomba
- Truck Year
- 1981, 1965
- Truck Model
- 81-C20 Silverado Camper Special-TH400-4.10s; 65-C20 with 4:57 gears and Borg Warner Overdrive
- Engine Size
- Carb'ed Vortec 350; 1972 L48 350
My '81 C20 has 4.10. When I had my dad's '79 GMC K15 it had either 3.73 or 4.10. I think 3.73 because it didn't rev as high at 60 mph. The lower revs were not because of bigger tires.