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Thread: My new Sierra...
04-23-2011, 06:03 PM #1
My new Sierra...
Ok, shes not new....but since i added AAM 4.11 gears its like a new truck! The stock gears were 3.23. Had originaly planned on 3.73 gears but I am glad I did the 4.11 after Darryel at Lloyds showed me some other GM trucks he had done with 4.11 and even some 4.88 gears.
I sold my Superchips programmer and had a guy do a custom tune so it looks like i need to update the tune...my speedo is off 15-20 mph Also when my GPS hits 75mph my speedo is at 100mph and the truck backs off the power so I am guessing we set the speedo limit at 100mph.
My RPMS at at 2300 at 75mph so it looks like at 80-83mph my rpms should be ok with the Over Drive.
Lloyds DriveTrain in Tucson did the work for me - $653 out the door..he even painted my drums for me.
04-23-2011, 06:08 PM #2
04-23-2011, 06:17 PM #3
1988 Chevy C-3500 2wd (no pic)
- Join Date
- Sep 2010
- Far West, Oregon USA,
- Blog Entries
350 c.i. 5.7 L Stock Block, 4 Bolt Mains
L-31 Vortec Heads, Edelbrock Cam & Intake,
Holley 650, Flowtech Headers, Magnaflow exh.
Jet Trans 700R4, B&M Ratchet, 4:10 gears,
3" susp. lift kit "shadetree"
No rev limiter, No speed limiter lol
04-24-2011, 12:40 PM #4
Nice! When you update the tune, you can fix the speedo. Just get a tuner that allows you to adjust gear ratio. I installed 4.56's with 35 inch tires and I used the Hypertech speedo calibrator and my speedo is not 1mph different than my GPS.
Bobby - North Carolina
2008 4x4 5.3L V8
6" Suspension Lift and 1.5" Body Lift
20x9 Ballistic Jesters w/35" Toyo Open Country MT's & 1.5" rear wheel spacers
4:56 Yukon Gears
Hypertech Speedometer Calibrator
Baja style bed mount spare tire carrier
Flowmaster 40 series dual exhaust
Recon Smoked LED tails/3rd brake lights/black projectors w/switchback LED's in the corners
N-Fab Nerf Steps
No Fear Pedals
Tint, Line-X bedliner, Window visors, Rear wheel well liners
Painted front grill, bow ties and door badges, de-"lettered" tailgate
Powder coated front and rear bumpers
04-24-2011, 12:47 PM #5
- Join Date
- Jul 2010
- Denver, CO
- Blog Entries
You'll definitely be happy with new gears. Congrats!!
Mike (Denver, CO) - 2008 Sierra 1500 Z71 SLE 5.3L 4WD
SUSPENSION: Rancho 4" Suspension Lift; Rancho RS9000XL Shocks; Rancho Skid Plates; Rancho MyRide Wireless Shock Controller;
TIRES: BFG All Terrain KO 315/70/17
DRIVE TRAIN: 4.56 Gears; Detroit TrueTrac Differential; True Cool 40k Transmission Cooler
PERFORMANCE: DiableSport Predator Tuner; Custom Tuned by Diablew; Magnaflow Exhaust; AFE Cold Air Intake
ELECTRONICS: Kenwood DNX6180 Touchscreen; Subthump box w/10" Kicker; Driver Information Center (DIC); Rear View Camera
ACCESSORIES: Westin Brush/Grill Gaurd; Westin Nerf Bars; Truxedo Tonneau; 20% Tint; Tow Mirrors w/Heat & Signals
04-24-2011, 03:21 PM #6
Hhaha...I havent tried yet...the shop said I should give it a 500 mile break in period. He also mentioned that the truck has a OEM type posi....well not really a posi per se...however he said they tend to break easily. Lockup or lockout something or another,
he was trying to tell me to be kind to my rear end in so many words!
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