We recently calibrated a 2012 LS3 camaro SS with 1300 miles on it with
Precision Race Components CNC Ported 6-Bolt 255cc Aftermarket Casting LS3 Heads, 235/239 camshaft with headers and the FAST 102 manifold and 103 NW throttle body.
after we recalibrated the tune for performance, she put down a sweet
513 RWHP and 460 RWTQ. Very impressed and smooth driving
The heads flowed a full 1.00 G/CYL mass and a WOT 12.6 AFR. Click thepicture for the video