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Topic: N11 Off Road Exhaust

in Forum: C3 Fuel, Emission Control, and Exhaust Systems


N11 Off Road Exhaust

Posted: 3/24/03 12:01pm Message 1 of 5
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SPARTA, NJ - USA
Joined: 6/12/2002
Posts: 5
Vette(s): 1968 Convertible 427/390 air conditioned original motor and trans documented with tank sticker plus more
In 1968 Chevrolet offered N11 off road exhaust but no side exhaust what exactly is the difference between off road exhaust and stock exhaust?

Mike


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N11 Off Road Exhaust

Posted: 4/15/03 9:49pm Message 2 of 5
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WASHINGTON, MO - USA
Joined: 1/16/2002
Posts: 4
Vette(s): 1969 Coupe - Red with Saddle Tan Interior 427/400Hp, M-21 4-Speed
Mike -
I don't know if anyone has answered your question or not. but the only difference between a standard exhaust and a N11 off road exhaust is the off road exhaust has fewer baffles in the muffler for less flow restriction and are supposedly significantly louder than the standard muffler.
Chuck W.

|UPDATED|4/15/2003 9:49:33 PM|/UPDATED|



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N11 Off Road Exhaust

Posted: 4/15/03 10:28pm Message 3 of 5
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Burke, VT - USA
Joined: 1/23/2002
Posts: 7280
Vette(s): SOLD - "The Toy" - '70 Convertible
SOLD - "The Beast" - '90 ZR-1 (#682)
SOLD - "Betty" - '28 Ford Model A Tudor
Sold - "BLKBRRD" - '78 Pontiac Trans Am
"BLUBYU" - '04 Coupe
Weren't they also a larger diameter pipe? |headscratch|


Jim Olson 

"The Toys"...!!!  Save the Wave!

Where I've been in a Corvette...!!!

N11 Off Road Exhaust

Posted: 4/16/03 10:18am Message 4 of 5
Former Member
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SPARTA, NJ - USA
Joined: 6/12/2002
Posts: 5
Vette(s): 1968 Convertible 427/390 air conditioned original motor and trans documented with tank sticker plus more
Guys,

Thanks for the reply. I contacted paragon (Parts People) and they explained about the baffles. I have just installed them, the parts cost about $200.00. They make the car 427/390 sound a little throatier with slight back fire on down shift. Overall i am very happy with the change.

Mike


N11 Off Road Exhaust

Posted: 6/13/03 7:55pm Message 5 of 5
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BROOKLYN, NY - USA
Joined: 1/28/2002
Posts: 23
Vette(s): NONE
Same diameter. Welded pipes compared to clamped piped (I think)


the 15 year old kid (I wanna drive!!!!)

in Forum: C3 Fuel, Emission Control, and Exhaust Systems


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