Jeff's 2005 LS2 GTO gets a JR Racing dyno tune for 503 rwhp!
This dyno was done with the following modifications:
- Advanced Induction CNC ported 243 cylinder heads with stock valves, Cometic .040" MLS gaskets
- Flowtech Induction "Tiger Shark" camshaft, Flowtech "Gen IV" springs, titanium retainers, Manley hardened pushrods 7.375", Cadillac CTS-V lifters
- Yank SS3600 torque converter
- Kook's 1 7/8 long tube headers with off road mid pipes
- FAST 90mm intake manifold (ported)
- Magnaflow catback exhaust
- ASP underdrive crank pulley
- K&N cold air intake
- 3.91 gears
- JR Racing dyno tune
