C3140

C3140
INSTALLATION INSTRUCTIONS
P/N C3140 – FITS 1964-70 MUSTANG
Before installing these subframe connectors in your Mustang, inspect the parts in accordance with
the following list:
2
4
4
2
Bolt-in connectors
1 right/1 left
3/8-24 x 3 1/2 bolts
3/8-24 Nylon locknuts
3/8-16 x 1 bolts
2
2
2
2
3/8 lockwashers
1/2-20 Nylon locknuts
1/2-20 x 7 bolts
CE decals
INSTRUCTIONS – READ CAREFULLY BEFORE PROCEEDING
1. It is recommended that the subframe connectors be installed one side at a time.
2. Jack up car, support it securely on jack stands under the frame, and let the rear end/leaf
spring assembly hang unsupported.
3. At rear of front subframe, trim the triangle shaped sheet metal flanges back to the width of the
subframe. See figure A.
4. Remove stock front leaf spring eye bolt. Install rear of subframe connector as shown and
insert 1/2-20 x 7” bolt (provided) through connector bracket, rear subframe, and front spring
eye. Install 1/2” locknut, but do not tighten at this time.
5. Put 3/8” lockwasher on 3/8 x 1” bolt and push bolt through connector bracket and thread into
threaded hole in rear subframe. See figure B. Tighten 3/8” bolt and then tighten 1/2” bolt
from Step 4.
6. With rear of subframe connector bolted to the rear subframe, the front subframe connector
pocket should be over the rear of the front subframe. See figure C.
7. Jack up rear end assembly and support with jack stands so that the weight of the car is
supported by the rear end assembly in the rear and the front subframe in the front.
8. Drill two 13/32” holes through the side of the front subframe using the holes in the front
subframe connector pocket as a guide. Using 3/8” x 3 1/2” bolts and locknuts provided,
secure the front of the connector to the front subframe.
9. Repeat procedure for the other side of the car.
For Technical Assistance, call Competition Engineering's Tech Line at
(203) 458-0542, 8:30am-5:00pm Eastern Time
REV. B
082014
COMPETITION ENGINEERING
80 Carter Drive • Guilford CT 06437
Phone: (203) 453-5200 • Fax: (203) 453-6906
Visit Us At www.competitionengineering.com
C3140INST
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