Gen6 Camaro Sound Tube Removal (V6 and V8 versions) and door rattle notes

thingiverse

**NEW-- ** Based on feedback from the gen6 Camaro forum, I have created versions of an intake tube plug that will fit V8-engined cars. Presented here are versions with and without the Chevrolet bowtie on their faces. The version that has an o-ring groove is designed for a standard "116" size o-ring (15/16" OD, 3/4" ID, 3/32" cross section). All versions should be RTV'd in place to make a good air seal. These were tested and confirmed to fit by the kind courtesy of Sean B. (@Texan.1LE) who also provided photos of printed plugs and a V8 installation. Please note that the V6 versions are for 30mm intake tube holes, while the V8 versions are for 24mm holes. The firewall plug works for both V6 and V8 cars. There are also alternate versions of my Gen6 Camaro V6 sound tube removal plug set (the original versions can be found at https://www.thingiverse.com/thing:3127222). They are intended to improve upon the originals while being even simpler to install and much less expensive, as no purchase of a rubber plug is needed. A video has been created to show what to do if you suddenly notice rattles and road noise because it is now much quieter inside (see below). Also, I recently learned that there is a GM firewall block off plug, part number 23342796, originally meant for 2.0t applications. You may wish to purchase one of these rather than printing one such as mine. However, because it typically sells for around $18 (plus shipping), I would still print my own if I had to do it again. My design also has more robust lock tabs than the GM version and a solid center. Curiously, they call it an "front intake air duct hole" cover when in actual practice no air should ever be passing through that opening at all. Differences from the originals include: 1) This firewall plug is solid (no center core) so it can be printed with a relatively low percentage of fill and still remain strong. 2) The design has more robust lock tabs than the GM version, which makes it more secure. 3) It has a solid center, which provides additional strength. All versions of V8 pipe plugs are installed from the exterior of the tube. You may want to trim off the little anti-rotation tab on the tube so they will seat closer to the tube, but it is not required. Be sure to use plenty of silicone RTV to make an air tight seal with the tube even if using the o-ring'd versions. They probably should be printed in ABS due to the higher temperatures toward the top of the engine compartment. I am still loving not having that ridiculous noise tube in my car...... Apparently, GM is not too keen on them either as reportedly there are models of V8 Camaros now being shipped without them. I hope this is something that you will like as well. Thanks very much for viewing this.