Finding the right fit exhaust online

[Dilsterboy]

How will i know which exhaust system will fit my 2 door coupe 350 lemans? Im looking on opgi.com which has a good selection to choose but how can i read online what will fit mine?

 

[melsg5]

You measure the diameter of the pipe where it connects to the engine and then find a system that has the same diameter from the selection below. Without changing your exhaust manifolds you probably will have to go with a 2 1/4" system. I'm sure if you call them after measuring your current pipe they can recommend a system. Another source for exhaust systems is PYPES, they have a X cross over which increases power but you will have to contact them to see if there is a way to use their 2 1/2" system on your current exhaust manifolds. Regardless of which system you go for there is a common issue where you will possibly get a "droning" sound at certain engne speeds. In my case it was at 2,000 rpm which is 40mph, normal driving on local streets. It drove me crazy intill I changed the mufflers to Dynomax VT's, they have a valve which eliminates the "drone". Dont confuse "drone" with sound level. The "drone" is a harmonic vibration that will rattle your fillings.

http://www.opgi.com/lemans/1971/exhaust/exhaust-systems-kits/

http://pypesexhaust.com/c-946258-shop-by-vehicle-exhaust-systems.html

 

[Dilsterboy]

Well the problem is i dont have a pipe . I bought the car without.

 

[Dilsterboy]

Compared to the rest of the engine note whats the drone noise sound like?

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[melsg5]

It's a humming sound and it's loud enough that with the windows closed it will give you a headache. It is completely different sound from the deep throat note you get from a high performance exhaust system. I'm sure you will find lots of references to "drone" and "muffler" through google.
So what is attached to the engine exhaust manifolds, nothing?
Sample manifold
http://www.google.com/imgres?imgurl...a=X&ei=JMh3UsvjMMGSkQfx6ICgBQ&ved=0CEAQ9QEwAg

 

[Icefan71]

I have Pypes 2 1/2" downpipes connected to the stock manifolds and a Summitracing 2 1/2" dual exhaust system. Pypes makes a complete system that seems to be pretty popular and fits nicely from what I've read. Youtube is a great way to compare different brands for sound.