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Old 08-31-2011, 10:18 AM   #1
Classic69
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Join Date: Oct 2007
Location: Sherwood Park, Alberta, Canada
Posts: 360
Swapping from 4.56's to 3.73's

Im not very knowledgeable in this area so I thought id ask some people who might be able to give me some information. This fall/winter id like to swap the rear end gears in my '69 C10 from 4.56's to 3.73's, but im not sure what all is needed or how hard it would be for myself to do?

I like my 4.56 gears around town, but they aren't the least bit highway friendly with my TH350 (about 3900 RPM at 70 MPH), so id like to buy a new 3.73 gear set and install em in my 12 bolt rear end. What all needs to be done when swapping? Can anybody shed some light for me? Thanks!
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1969 Chevy C/10 Truck - SBC V8, TH-350, 3.73 Posi, 1000W Rockford Fosgate Stereo System, B&M Megashifter, GT Grant Steering Wheel, Dual Magnaflow Exhaust System, Dynomax Headers, Lowered 1" Front & 3" Rear, Front/Rear Sway Bars, Racing Seats, 6000K HID Headlights

2008 Chevy Colorado LT - 3.7L I5, 4 Speed Automatic, Crew Cab, 4X4, Z71 Off-Road Package, "Ground Effects" Package, K&N Cold Air Intake, Supermod PTB, Magnaflow Exhaust w/ Resonator, 500W Kenwood / Rockford Fosgate Stereo System, Custom LED Lighting, 6000K HID Low's / High's, Blackcat Customs Gauges / Needles, Carbon Fiber Interior Accents, KrFabs 2" Lift Shackles / Torsion Bar Crank with Rancho RS5000 Shocks, Superskids Skid Plates
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