2012 Sierra RCSB 5.3 build thread @ New Era Performance
#178
300 HP increase, That's the best you could do... 
Its amassing how well theses engines respond especially with a good tuner!!!
Keep up the Great work. Looking forward to seeing what else you throw at this truck.

Its amassing how well theses engines respond especially with a good tuner!!!
Keep up the Great work. Looking forward to seeing what else you throw at this truck.
#179
love your project im on my first truck project. i just got a 2012 rcsb 2wd chevy worktruck with 5.3 6speed auto.mods so far are knn dropin airraid tube ported tb fast lsxrt102mm kooks longtubes w cattedy 3inch into18inch glasspack w turndown before axle. slp udp. 1.8 yella terra ultralite rockers. tuned by area47. 3.42gears. just ordered circled 3000-3200 stall. im thinking cam and porting #799heads next any suggestions on camshaft would be appreciated! thanks.






