Quote:
Originally Posted by Tom
Dual 2.25 was factory, someone has changed it on your truck. Just keep with the single 3" like it is already, works perfect.
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I like your reply, maybe I’m putting too much thought into this.
I noticed the exhaust on my ’90 k1500 is single 3” pipe. I’m wondering if the 4x4’s had single and the 2wd had dual. There is a front diff drop and fuel tank on the driver side of the 4x4, so no room for dual there, or would they have gone down the passenger side? How are they routed on the 2wd? I found an article comparing the two sizes. It showed more torque and HP at lower rpm with the 2.25”, and more torque and HP at higher rpm with the 3”. The difference was 1, so not much. I would like a quieter ride, my ’90 k1500 is loud. I would consider going with 2.25 for a tamer sound. Yesterday I happened to pull up behind a truck of this era with one exhaust tailpipe, not 3” from what I could see. It was a nice truck, looked good. After driving a few blocks and hearing it, it sounded anemic, nasaly. I’ll go with the 3” and get what I get sound-wise.