Took my headers off
I cant believe it but for the first time in my 20+ years of modifying my vehicles I took a mod off. I'm mad and disappointed. I only had the headers on for a couple of months and they sounded terrible. I had headers on my C5 and another car previously as well. On this truck, the drone was bad, the valve train noise was bad and my truck sounded like a tractor. I am into them for way more than I'm happy to admit but it is just a lesson learned I guess. I thought I did a lot of research so I didn't expect the poor sound.
The good news is 2 fold. I'm getting pretty quick at changing the headers/manifolds on the truck and it has pushed me back to buying a toy. I will be looking at a first gen CTS V on Tuesday evening. Coming from the C5 this is about a perfect car for me as it gets. I sold the vette because I wanted to be able to take the family with me. I feel familiar with the mechanicals of the Cadi and it has 4 seats. Hope my wife doesn't kill me :) |
As much as I want to get a set for mine everyone I talk to w/ gmt900 trucks has shitty valvetrain noise w/ them. Have had headers on all my previous vehicles w/ no noise at all but sounds like these trucks are different.
What motor and what muffler set up do you have? |
Yeah, shitty is about the nicest word I could use to describe all of the sound. I have a 5.3 with a Corsa exhaust. Admittedly the exhaust is not well matched for the headers.
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sound not sound like a tractor, find a better exhaust to get rid of the drone and etc
corsa is not a good sounding exhaust at part throttle, its a aggressive sound at WOT |
My 08 4.8 with cam and headers didnt sound like a tractor and i had the cheap ebay headers on mine. I agree with george, a better muffler will make a ton of difference. Id get compliments on how badass it sounded full throttle and at idle.
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I had drone at anything over 65mph, these made a world of difference on my Borla cat back 140420 kit LINK , but this won't get rid of valvetrain noise.
It's useless now since you removed your exhaust, but maybe it can help others |
I get sewing machine noise but I dont think it's from my headers, I do get a pretty nasty drone though at 65mph ish
good luck on the CTS build though! I love those cars |
I've never had a drone, rasp is a different story.
Swap to a stock muffler and cut outs :devil: I am extremely happy with my stock duramax exhaust |
No drone here with my factory catback (catless, too). My magnaflow exhaust had terrible drone with the factory manifolds and cats.
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Mine is loud as hell, but the sound is good and deep, not bad/raspy/drone loud. Speed Engineering headers with a single Dynomax muffler and dual out. No Cats.
I have considered adding a resonator or something similar to lower the volume a bit, but actual drivetrain noise doesn't seem to be too much of an issue. - You can hear it, sure....but with a motor swap, cam, head work, etc I kind of expect to hear it. The only thing I don't like is it can have an incredibly annoying rattling sound at WOT in first gear. I thought at first it may be a leak at one of the connections, but I tried every fix known to the forum short of welding the connections and nothing got rid of it. Honestly, I'm sort of used to it at this point. - may be something as simple as a rattling heat shield....<shrug> The truck runs fine after several months that way so I haven't been overly concerned about it. |
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