How To Install Summit Headers

• Disconnect negative battery cable.
• Remove the exhaust manifolds. (6 bolts on each side)
• Remove the starter and clutch linkage if applicable.
• On 1975 Lemans remove the starter heat shield and throw away.
• Remove the oil filter from engine. you may want to replace it with an AC45 or Fram PH3429 for better clearance when done.)
• Remove shift linkage, steering lockout device, and chassis support rods on later models.
• Remove the center bolt from both engine mounts.
• Place jack with a wood block under engine oil pan and raise motor. Be sure to check for clearance while raising motor.
• Replace any worn out motor mounts.
• Slide in headers and start the bolts on the ends first.
• Cut slots in gasket to drop in onto the two bolts started.
• With header still loose put clutch linkage back in.
• Put in remaining header bolts, start with most difficult ones first.
• Tighten header bolts while "easing" header down.
• Lower engine down and check header clearance while aligning motor mounts up
• Reform lockout linkage and install.
• Install starter and oil filter, again the AC45/Fram PH3429 or equivalent allow more room to work with.
• Replace any lost fluids.
• Check around headers for proper clearance of fuel, transmission, brake lines, and etc.
• Bolt up reducers to exhaust pipes.
• Re-attach battery ground wire.
• After a couple of days to "break in" re-torque all bolts
• Header specs: they are four tube with 1/4" flange and on my 78 T/A with 255/60/15 BFG Comp T/A's the lowest point is 4-1/2" from the ground.

  SUMMIT