Chambered exhaust

[firstgenaddict]

Stock 302 std bore new rings with factory replacement camshaft.
Fast idle cold start.
IN FRONT OF CAR...
https://www.youtube.com/watch?v=tu8kbyEZx0o

HERE is a video driving from a culdesac to my house with the camera on the back of the car.
I think I forgot about the camera for a min... forgive the end of the video...


https://www.youtube.com/watch?v=9k2DsxT34WQ

[Steve Shauger]

I'm not a fan of the chambered on Z28. It's sounds like glass pack with a high pitch pop. I like it on big blocks, as it's much more pleasant to my ear. Flowmaster American thunder with 40 series droning is unbearable. I even put 50 series and still too much drone. I installed a set of cheapie Hush Thrust Turbo mufflers and good to go.

[asm69]

I think chambered exhaust looks great and exotic. Its cool that GM installed that type of system from the factory, but wow, that is a loud exhaust system. I'm still going to look at local car shows to try to hear one in person.

[asm69]

firstgenaddict, I listened to several clips last night of chambered exhaust and non-chambered exhaust. There is something that can be said about the way that chambered exhaust sounds. I realize that it is louder than deep tone, but, the sound is powerful, gut wrenching and compliments what the Z28 is known for, speed and power.

[262jp]

Only ones I have heard sound like glass packs when you let off the gas. Maybe if I were 17 again but not at 70.

[firstgenaddict]

It sounds wicked whether through manifolds or headers, I agree with Steve the Big Block esp the L78 sounds exceptionally well with the chambers, however I like the sound from the high revving small blocks as well...

Reproduction chambers from Ricks, 302 +.020 , Hooker super comps and Crower solid roller 636 lift. 

https://www.youtube.com/watch?v=e4BZbpTA_wI

[X33RS]

Chamber sounds good when the engine is at full song and high rpm, but around town I got tired of it pretty quick riding in a friends car.  It sounds like old school glass packs to me.  On a fun car seldom driven I could live with it.  Driving it frequently would have me making another choice.  My wife certainly wouldn't stand for it at all, even occasionally, lol. 

[asm69]

firstgenaddict, on your recent youtube link. The sound of that chambered exhaust sound like that "Z" is ready for business. Mean and loud.

[firstgenaddict]

Dave Crower custom 636 lift solid roller  12.5 pistons zero gap rings, eagle rods... .020 302 = 305CUI
IT had so much low end, 350 ft lbs torque by 3200 rpms, made great vacuum -12-15in at idle, used the HIPPO lifters Hi Pres Pin Oiled.

[asm69]

I have decided to move forward and install the chambered exhaust system on my early produced Z (Oct 68).

After reviewing many "youtube" videos of Z28's with the chambered exhaust system and speaking with Eric gardner from gardner exhaust, I feel its the correct decision.

I now can distinguish the chambered sound from a deep tone sound. Yes, its louder and more crackley, but, its what my Z came with.

[dale_z28]

I have decided to move forward and install the chambered exhaust system on my early produced Z (Oct 68).

After reviewing many "youtube" videos of Z28's with the chambered exhaust system and speaking with Eric gardner from gardner exhaust, I feel its the correct decision.

I now can distinguish the chambered sound from a deep tone sound. Yes, its louder and more crackley, but, its what my Z came with.

Good for you! I would have done the same IF my car had originally come with chambered, because I would then have that "excuse" to annoy my wife and neighbors. When I get the urge to do so, I'll just uncork my headers and prepare to sleep in the doghouse.
I'd like to hear your systems when it's done, if possible!

[asm69]

dale_z28, Thanks for your comments. I will post something when its complete.

[nodz80]

my car came with chambered exhaust.i remember when new it had more of a popping sound but I think it was due to the smog equipment that was on it. i removed the smog pump and the tubes that went into the exhaust manifolds and i think it removed the popping sound.I liked the sound then and still do now. I replaced the old system with a new stainless system sometime in the early 80's, its still on it and i really like the way it sounds, but thats my opinion.

[asm69]

nodz80, thanks for your comments. Yea, I'm feeling more and more that the chambered exhaust sound and unique appearance, says 1960's  muscle car.

[firstgenaddict]

The chambered system will pop back because there is no equalization through a cross flow muffler, it is a true independent DUAL Exhaust.