JBA 40-3030 User Manual

INSTALLATION INSTRUCTIONS

**Installation recommendation:

Installation of this system requires welding. JBA recommends the vehicle be taken to a reputable exhaust shop.

Part s List

A. Muffler, offset 2

40-3030

01-06 GM Silverado 2500/3500 HD

6.0/8.1L V-8

TOOLS RECOMMENDED:

9/16" deep socket 3/8" ratchet 7/8" open end wrench 15mm box wrench rubber mallet spray lubricant or penetrating oil anti-seize reciprocating saw or hack saw pair of channel lock pliers, 10"

TO START :

1. Remove and inventory new JBA exhaust.

2. Disconnect negative battery cable and allow vehicle exhaust to cool.

B. Tail pipe hanger 1 C. Turn out 1 D. Turn out with hanger 1 E. Tail pipe 1 F 3" clamp 6 G Support bracket 1 H 3" clamp with hanger  1 I Extension bushings   2 J 5/16" nut, bolt and lock washer  1

15. Tack weld the mufflers in place at the slip connections with the factory exhaust.

3. With the vehicle raised, use a reciprocating saw and cut the exhaust just ahead of the factory muffler as close to the welded connection as possible.

4. Cut the tail pipe ahead of the hanger closest to the muffler. Then remove the factory muffler.

7. From the rear of the vehicle, remove the tail pipe assembly from the truck.

8. Pass the new JBA tail pipe (B) over the axle and insert the hanger into the forward rubber grommet.

9. Take the turn out with hanger (D) and insert the hanger into the rear rubber grommet.

11. Pass tail pipe (E) over the axle and insert it into turn out with hanger (E). Insert tail pipe (B) in to turn out (C)

12. Install the new mufflers (A) with the offset end toward the front of the vehicle. See the picture above. If installing on the a 1500 HD you will need to insert the reducer bushing into the offset end of the new mufflers.

16. Align the turn outs (C) and (D) and tail pipes (E) and (B) for proper fit and clearance.

17. Align the tips on the turn outs (C) and (D) for proper clearance.

18. Snug the support bracket (G) holding the tail pipes (E) and (B) to the mufflers (A).

5. Spay lubricant on the rubber exhaust grommets behind the muffler.

10. Insert turn out (C) and attach to turn out (D) using the supplied nut and bolt. Snug (C) and (D) together but don't fully tighten yet.

13. Assemble the new rear exhaust support bracket (G) with the supplied 3" clamps (F) as shown.

14. Position the assembled bracket at the rear of the mufflers over the slip connection with the tail pipes (B) and (E). Then align the mufflers.

19. With the new exhaust system properly aligned weld the muffler into place.

20. Finally tighten the support bracket.

NOTES:

1) It may be necessary to loosen and realign the sp are tire for proper clearance.

2) All exhaust systems will exp and about 1" rearward when exhaust temperature st art to rise.

3) Use Anti-seize on threads of clamps.

6. Using the channel lock pliers remove the exhaust hangers from the rubber grommets.

17040a

12.11.06