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DISASSEMBLY (Continued)
5. Remove O2 sensor (if applicable) being careful not to destroy or rupture the unit.
Warning: Do not clean this unit in any cleaning solvents and do not rupture
wire.
6. Remove the two nuts from hanger bracket. Remove the two bolts and springs at the
catalytic converter. Then unbolt the three bolts at the mid-section of manifold and
remove lower portion of manifold (B-section).
7. Remove the bolt that is attached to the engine block in the lower section of manifold.
Remove bolts from manifold at cylinder head and pull manifold out from top side.
Note: Save all factory nuts, bolts and springs to be used during re-assembly.
ASSEMBLY
1. Install (a section) of header assembly from top side with gasket and 9 hardened
washers (supplied in kit), using factory bolts/nuts as applicable.
2. Install secondary section (B section) to (A section) top half using the three 10mm. Bolts
and lock washers with the two crush ring gaskets (all supplied in kit). Use anti-seize on
threads. (The two crush rings should be installed with the seam or split down towards
B-section).
3. With donut in place, connect header to catalytic converter using stock hardware as
before.
4. Install O2 sensor "if equipped". Use anti-seize on threads of sensor and torque to 30 ft.
lbs.
©2001 Edelbrock Corporation
Part Numbers
Qty.
6643
6743
4743
Edelbrock Corporation
2700 California Street
Tech Line: (800) 416-8628
E-Mail: Edelbrock@edelbrock.com
PARTS LIST
PN
1
25-9187
1
25-9196
1
22-6852
1
25-9189
1
25-9197
1
22-6852
1
25-9185
1
25-9195
1
22-6852
Torrance, CA 90503
Description
Pro-Flo Header (A Section)
Pro-Flo Header (B Section)
Installation Kit
Pro-Flo Header (A Section)
Pro-Flo Header (B Section)
Installation Kit
Pro-Flo Header (A Section)
Pro-Flo Header (B Section)
Installation Kit
Rev. 5/01
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