Stainless Works Ford Shelby GT500 2011+ Headers - Manual (Page 2)

WWW.STAINLESSWORKS.NET 800-878-3635 FAX: 440-543-9183
18. Remove three 8mm bolts from rubber and metal heater hose that blocks bottom
of driver side header and undo clamp in engine bay to make metal hose loose.
19. Removal of alternator makes ease of header bolt tightening much easier (bolts
15mm, belt tensioner is 15mm).
Installation of Headers and Lead Pipes
20. Apply sensor safe RTV silicone (or factory gaskets) to flange on headers and
anti-seize to EGR fitting.
21. Install O2 extensions on first before installing headers. Zip tie the connections at
both ends to assure that they will not separate. This will prevent any problems
with a check engine light (CEL).
22. Before installing either header with the new header bolts (provided) put the
bottom bolts with washers in until about 7/16” gap to head to set headers on and
to actually install the bolts.
23. Raise driver side of motor up to install driver side header/ install passenger side
header.
24. Put all header bolts in before tightening any of them.
25. Tighten header bolts to OEM specifications.
26. After header installed, bolt motor mount back onto block and with both top nut
mounts loose move motor towards passenger side of compartment as far as it
will go (which is only about ¼” or so.).
27. Lower motor down and tighten mounts.
28. Install the front bolt and rear bolt for the rubber and metal heater hose. The
middle bolt will not be able to be reinstalled.
29. Reinstall alternator, steering shaft, oil filter, starter, crossbar, air intake, battery
box and battery.
30. Install cats with welded lead pipes (or offroad lead pipes) to X-pipe loosely first
then all together put onto headers. Adjust as necessary and tighten all clamps.
31. After connected to headers and either factory exhaust or aftermarket exhaust
install O2 sensors and zip tie the
slack. If installing a Stainless Works catback
system, please refer to those Installation Instructions.
32. Check oil level and refill to OEM specs. Reconnect the battery.
33. Be sure to have adequate clearance around all wires, hoses and lines. If
anything is in contact with the exhaust system, it will melt. Make sure to
have at least ½” of clearance and wrap any suspect areas with DEI thermal
barrier wrap.
34. After double checking for clearance and making sure all lines, wires and hoses
are secured, drive the car for 10-20 miles and re-check all clamps and clearances.
Your system may be tack welded at the joints/ clamps to reduce shifting of the
system during heating and cooling cycles. Make certain to disconnect the battery
before performing any welding.