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Old 11-26-2015   #1
trickis1127
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High output exhaust???

Hi guys. Question, I have to order an intermediate pipe, the flange after the cat is rusted out. Looked on RockAuto and they offer two options, one says high output and the other one says excluding high output. How do I know which one I have?
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Old 11-26-2015   #2
DynoDave
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Re: High output exhaust???

The only FACTORY system variations I know of, for a given year and TPI motor, would be the RPO N10 option, which was dual catalytic converters Vs. the std. single.
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Old 11-28-2015   #3
TTOP350
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Re: High output exhaust???

I think in 87-88 (with the 350) the cars got the 2 3/4 flanged intermediate pipe with the 2 bolt clamp.
Jan 89-92 with 350 and 305 5spd (G92 or R6P) got the 2 3/4 intermediate pipe N10 with the flange and simple clamp setup.
Its also easy to see what you have just by looking under the car at the cat(s).
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Old 11-29-2015   #4
trickis1127
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Re: High output exhaust???

The tricky part is, both pipes online look the same here are pictures.

But based on the description and the look of the diagram, I'm thinking it's the 46669...
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Old 11-29-2015   #5
trickis1127
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Re: High output exhaust???

Here's other photo
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Old 11-29-2015   #6
trickis1127
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Re: High output exhaust???

And the last
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