RE: 07 4.3L v6 nbs

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RE: 07 4.3L v6 nbs

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Chevrolet >> Chevy Trucks, Vans & SUV's >> Silverado >> RE: 07 4.3L v6 nbs

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RE: 07 4.3L v6 nbs - 4/7/2008 9:16:44 AM

dway87

Posts: 22
Joined: 3/10/2008
Status: offline

i believe it has 2 cats. i don't think they are bolted on.

_____________________________

2007 Chevy Silverado NBS
Silver
Regular Cab
LS
Sony Xplode CD/mp3 player

(in reply to northey87)

Post #: 11

RE: 07 4.3L v6 nbs - 4/7/2008 9:39:46 AM

northey87

Posts: 874
Joined: 10/17/2007
Status: offline

Then I would look for kit for your truck online, I would suggest summit racing, jegs, autoanything, just to name a few, they should sell catback systems for your truck. What you are going to probably want is a duel in, single out muffler with a 3" mandrel bent tail pipe. the 3" mandrel bent pipe will give you more volume (meaning less back pressure) than a duel out 2" pipes will.

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''''95 1500 Silverado, 350, flowmaster Force II exhuast, S&B CAI.

(in reply to dway87)

Post #: 12

RE: 07 4.3L v6 nbs - 4/7/2008 10:14:22 AM

dway87

Posts: 22
Joined: 3/10/2008
Status: offline

awesome. i will check it out.

_____________________________

2007 Chevy Silverado NBS
Silver
Regular Cab
LS
Sony Xplode CD/mp3 player

(in reply to northey87)

Post #: 13

RE: 07 4.3L v6 nbs - 4/14/2008 7:50:09 PM

rockmaples

Posts: 12
Joined: 3/21/2008
Status: offline

Check the cat converter. Mine was blocked and I nearly doubled the mileage when I replaced it with a flowmaster..

P

(in reply to northey87)

Post #: 14

RE: 07 4.3L v6 nbs - 4/15/2008 2:39:28 PM

dway87

Posts: 22
Joined: 3/10/2008
Status: offline

quote:

ORIGINAL: rockmaples

Check the cat converter. Mine was blocked and I nearly doubled the mileage when I replaced it with a flowmaster..

P

what do you mean by blocked?

_____________________________

2007 Chevy Silverado NBS
Silver
Regular Cab
LS
Sony Xplode CD/mp3 player

(in reply to rockmaples)

Post #: 15

RE: 07 4.3L v6 nbs - 4/15/2008 4:03:51 PM

northey87

Posts: 874
Joined: 10/17/2007
Status: offline

He means his cat was clogged. Your's shouldn't be clogged, its only a couple years old.

_____________________________

''''95 1500 Silverado, 350, flowmaster Force II exhuast, S&B CAI.

(in reply to dway87)

Post #: 16

RE: 07 4.3L v6 nbs - 4/15/2008 8:09:01 PM

dway87

Posts: 22
Joined: 3/10/2008
Status: offline

oh ok. i feel like an idiot askin this but how do i know if i have two cats? i know that before the muffler that the pipes are split and go to different sides of the truck. the muffler is stock so its one inlet and one outlet. thanks for all the info.

_____________________________

2007 Chevy Silverado NBS
Silver
Regular Cab
LS
Sony Xplode CD/mp3 player

(in reply to northey87)

Post #: 17

RE: 07 4.3L v6 nbs - 4/15/2008 10:35:16 PM

northey87

Posts: 874
Joined: 10/17/2007
Status: offline

The cat kind of looks like a muffler, but smaller. The cat has to come before the muffler, so if the cat is not between the muffler and where the pipes come together then you will have two cats. You may want to follow the lines and see where it/they are located, never hurts to know your truck better.

_____________________________

''''95 1500 Silverado, 350, flowmaster Force II exhuast, S&B CAI.

(in reply to dway87)

Post #: 18

RE: 07 4.3L v6 nbs - 4/16/2008 5:35:22 AM

bad2006z71

Posts: 129
Joined: 2/8/2008
Status: offline

the cats on my truck are located on each of the exhaust pipes that come out of my stock exhaust manifold before it ties into one pipe.

i was told that the factory cats are "highflow" cats vs. the older trucks and not to replace them with highflow cats. anyone know the truth in this?

_____________________________

2006 Chevrolet Silverado Ext. Cab LT3 VortecMax, Black, K&N 63 series intake, 40 series dual in dual out Flowmaster, Line-x spray in bed liner, SS Insturment cluster. soon Nelson Tune

(in reply to northey87)

Post #: 19

RE: 07 4.3L v6 nbs - 4/16/2008 1:24:10 PM

dway87

Posts: 22
Joined: 3/10/2008
Status: offline

i can't seem to find a dual inlet/single outlet muffler. would a single inlet/outlet be good? also what about a flowmaster 40 or super 40? i have never dealt with exhaust before and i do know that i won't ever get that "v8" sound either.

_____________________________

2007 Chevy Silverado NBS
Silver
Regular Cab
LS
Sony Xplode CD/mp3 player

(in reply to bad2006z71)

Post #: 20