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3. Install U-clamps and tighten all nuts and bolts.
NOTE: If shifting rod hits the left manifold when
shifting into low gear, remove the rod and straighten
the bent section about 5° as required for clearance.
This will also lengthen the shifting rod, and it will be
necessary to cut off about 3/4" from the end of the
rod to prevent interference with the exhaust system.
See Figure 1 .
4. Check to be sure that all brake and fuel lines have
adequate clearance.
5. Connect all parts including battery.
6. Start engine and bring up to normal temperature,
then turn off and let cool.
7. When cool, re-tighten all manifold nuts and bolts.
KIT CONTENTS
Catalog #68572, Catalog #68573 (Ti-Tech Coated)
Qty.
PN
❑ 1
25-9331
❑ 1
25-9332
❑ 1
25-9027
❑ 1
25-9023
Qty.
Description
❑ 1
Extension pipe left side (#25-9555)
❑ 1
Extension pipe right side (#25-9527)
❑ 1
Pigtail O2 sensor; 12"
❑ 1
Flange connector
❑ 1
U-clamp; 2-1/4"
❑ 1
U-clamp; 3"
❑ 2
Chevy V8 port gaskets
❑ 2
Donut gaskets
Catalog #s 68572, 68573, 68582, 68583
©2006 Edelbrock Corporation
Description
Header left side (#68572)
Header right side (#68572)
Header left side (#68573)
Header right side (#68573)
Common to All Part Numbers
Edelbrock Corporation, 2700 California St., Torrance, CA 90503
Tech Line: 1-800-416-8628
E-Mail: Edelbrock@Edelbrock.com
Figure 1
NOTE: On some installations, the shifting rod may hit the
left manifold when shifting into low gear. If this happens,
the rod must be re-shaped to provide clearance as
shown in this drawing. Also, approximately 3/4" must be
cut off of rod.
Catalog #68582, Catalog #68583 (Ti-Tech Coated)
Qty.
❑ 1
❑ 1
❑ 1
❑ 1
❑ 1
KIT CONTENTS
Qty.
❑ 4
❑ 12
❑ 2
❑ 1
❑ 4
❑ 1
❑ 2
❑ 16
Page 3 of 3
Straighten bend about
5° in two places
Cut approximately
3/4" off end of rod
KIT CONTENTS
PN
Description
25-9429
Header left side (#68582)
25-9428
Header right side (#68582)
25-9028
Header left side (#68583)
25-9019
Header right side (#68583)
-
Hose (A.I.R.); 5/8" x 30"
Description
Flat washers; 3/8"
Hex header bolts; 3/8" x 1"
Ferry bolts; 3/8" x 2-3/4"
Hex bolt; 1/4" x 1"
Hex bolts; 3/8" x 2"
Spacer tube; 3/8" O.D. x 1/2" Long
Spacer tubes; 5/8" O.D. x 1.530" long
Lock washers; 3/8"
Brochure #63-68572
Rev. 6/06 - DA/mc
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