anyone running an overdrive trans and 4.56s? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

eray92 · 08-15-2013, 10:41 PM

I just swapped in a 200-4r trans into my truck and a gear locker but kept the 3.08s. I have drove it about 160 miles since the swap. the 383 has enough torque to pull it in 4th gear with torque converter locked but its at 1300-1400rpms. the truck is driven mostly city miles. I live 5 miles from my work and about 10 miles from the grocery store. it will never get on the interstate. I have some 4.56s from my old truck and thought about throwing them in. I have 255/45/20s on there which equals a 29.4" tire. rpms at 60 would be around 2100. that's better than running a th350 and 3.08s.

what are your opinions and personal experience?

08-15-2013, 10:41 PM	#1
eray92 Registered User Join Date: Dec 2012 Location: Batesville Indiana Posts: 126	anyone running an overdrive trans and 4.56s? I just swapped in a 200-4r trans into my truck and a gear locker but kept the 3.08s. I have drove it about 160 miles since the swap. the 383 has enough torque to pull it in 4th gear with torque converter locked but its at 1300-1400rpms. the truck is driven mostly city miles. I live 5 miles from my work and about 10 miles from the grocery store. it will never get on the interstate. I have some 4.56s from my old truck and thought about throwing them in. I have 255/45/20s on there which equals a 29.4" tire. rpms at 60 would be around 2100. that's better than running a th350 and 3.08s. what are your opinions and personal experience?



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.