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Old 09-05-2018, 05:16 PM   #1
scotty9794
 
Drives: 2011 ss/rs
Join Date: Sep 2016
Location: Lincoln, Ne
Posts: 34
4l80e concerns

I bought my '11 with a 4l80 swap already done, and the car inoperable. I had a local shop get it back together again, but i feel as though im having some issues and im not sure where to turn as the shop says its normal. The car has had very harsh engagement since it was finished. To the point where the driveshafts hitting the heat shield above it and the differential, it apparently did this before i bought it. Anyways, the trans was ruined when i bought it, so it was rebuilt as well as the converter. It has amsoil supershift fluid in it and it is full. The passenger o2 sensor was bad so i changed it. After that, now i have a delayed 1-2 shift unless i let off the throttle, and my engine speed bounces upto 200 rpm when at cruising speed, and sometimes even under light load in traffic. All the other shifts are consistent, although theyre significantly softer than id expect them to be for a performance transmission. My tahoe with a blackbear tuned 60 in it is far more aggressive. Any suggestions please?
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Thompson Motorsports forged 376, 237/239 cam, AGP kit w/ s256 twins, AGP race intercooler, Alky dual nozzle meth system, FIC 127lb injectors, Fore triple AEM 320 pump system, Jakes stage 4 4l80e, Circle D triple disc billet 3600 stall, DSS aluminum shaft, eBoost 2 controller, BMR toe rods-adj lower control arms-adj trailing rods
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