Header install help on 99 vette





BC
Bill
On the right side of the engine (passenger side) remove the bolt holding the oil dipstick
tube to the exhaust manifold. On 2001 and newer C-5’s, remove the dipstick tube hold
down bolt out of the head itself as opposed to the exhaust manifold.
· Pull the dipstick tube and dipstick out of the hole in the engine block and set aside for reinstallation
during a later step.
· Remove the spark plug wires from both the coil packs and spark plugs.
· Remove the spark plugs from the right side engine bank (passenger side).
· Remove the bolts from the air tube flange and remove the air tube flange gasket.
· Disconnect the plug connecting the coil packs to the main wiring harness and two (2)
press–on hoses. Loosen and remove the bolts holding the valve cover to the head. Lift the
valve cover with the coil packs still attached off the right side engine bank (passenger side)
and cover the exposed valve springs with several shop towels to prevent contamination.
\
· Begin installation by lowering the right side (passenger side) header into the engine bay
from the top side. The header has to twist and wind down through the opening to miss the
A/C lines etc. The tab on the lower part of the header must be passed by the starter. The
starter will have to be moved, in order for the tab to slip by. Once the header is past the
starter, re-install the starter bolts and securely tighten before installing the bolts in the
header. It can be done afterward but is much more difficult.
· Prepare the six (6) header bolts with a small amount of anti-seize for the right side header.
· Pull the header back up into position, install the gasket (see the picture below to avoid
gasket and sparkplug interference problems), and start the header bolts by hand to prevent
cross-threading. The bolts should be fully installed but not tightened at this time.
Last edited by 69; Nov 30, 2009 at 08:40 PM. Reason: Added Photo
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Oh yea... don't forget to drain your oil first





















Higher she goes!!!