Stainless Works Ford Shelby GT500 2011+ Headers - Manual

WWW.STAINLESSWORKS.NET 800-878-3635 FAX: 440-543-9183
2011+ SHELBY GT500 HEADER INSTALLATION INSTRUCTIONS
Thanks for purchasing Stainless Works Muscleflow Headers for your 2011+ Shelby GT500. We
have gone to great pains to make sure that our exhaust systems fit and sound great. Please follow
these steps to ensure that your installation goes as planned.
1. Stainless Works recommends the use of Permatex Hi-Temp RTV silicon gasket
maker as an option to or in conjunction with the use of factory gaskets. The
recommended RTV is Sensor-Safe P/N 101BR or 27BR, available at NAPA and
other retailers.
2. Disconnect the battery before starting work on the exhaust system for your
vehicle. Reconnect the battery when the job is completed.
3. Your exhaust system can be installed by a weekend warrior but the use of a lift is
recommended for ease of installation. If using a jack, the vehicle must be placed
on a level hard surface and jack stands are required for safety reasons.
Removal of Old System
4. Raise and support vehicle.
5. Remove battery and battery box (8mm).
6. Remove air intake.
7. Remove oil service cover (underneath car) and front undercar valence (8mm and
7 mm).
8. Remove crossbar under engine (four 15mm nuts).
9. Loosen clamps at rear of H-pipe and loosen exhaust system. If you are replacing
the exhaust system, remove it completely from the car by removing hangers on
mufflers and slide out of the car (requires 13 mm and 15 mm).
10. Before removing lead pipes and manifolds take out O2 sensors (either unplug or
take out with 7/8” wrench).
11. Mark steering shaft for later reassembly in the exact same location and remove
13 mm bolt and push shaft up on frame rail out of way. (Leverage a pry bar
against frame rail).
12. Remove starter (three 10mm bolts) hang it out of the way with zip ties.
13. Remove EGR fitting on passenger side manifold and remove both manifolds
(EGR fitting is removed with a crescent wrench).
14. Remove manifold studs with 5 mm socket.
15. Loosen the top nut for motor mounts (15mm) but remove driver side bolts
completely and leave in general location but totally loose for installing headers.
16. When ready to install headers use drain pan and remove oil filter for driver side
header.
17. Remove dipstick for install.