In Search Of - Vibration

well that looks like a decent higher flow rate x-pipe design
 
The car went in yesterday - let's hope this guy can manage. It doesn't look like the easiest job.
 
The X pipe was installed and, I like it. The exhaust note is more mellow. It seems smoother as well but still not there yet.

I guess it’s time to do a roller cam swap. I kinda like the Voodoo cam - a hat tip to my New Orleanian roots :D

With my current cam, you really have to rev it high to get some torque out of it.

I’m tempted to pull the cam this weekend to see what it is. I’m expecting a no name brand lump stick.

It will also give me the cam sprocket to machine down 0.030 to accommodate the .030 wear plate.
 
The voodoo is made by Lunati if it is at least its a top of the line performance manufacture did you get it all ready for the in car swap or are you going to pull it
 
I agree with riphvac, Lunati is a good brand! JMO, but I still think you'd be leaps and bounds ahead if you pulled the engine for the upcoming cam swap! Just an all around better experience to have full access to key areas and components of the engine. Here's a example, when the spring gets here and I start my upcoming header and exhaust construction, I could probably build it in the car the way it is now. But for better access, I plan on pulling the front clip so access is much easier. I would just like to see you have a better experience, doing such jobs as a cam swap in the car can be frustrating at best, and probably even more so in the confines of a corvette.
 
Pulling the engine out of this car is a real pain. The nose is so long that you can only do it from the side and with a wheel removed. Add to it the fact that I bolted on a T5 trans and it gets even trickier.

On the other hand, because the nose is so long there is a lot of space and swapping a cam is quite easy. I have already done it once before on a previous engine.

I don't know if this cam swap will address any issues with regards to the vibration, but if it doesn't, next year I will pull it and have it balanced. For sure, I do think getting my bottom end back will make the car much more fun and pleasant to drive.
 
Im not even really thinking of only the cam but pulling and re installing the heads intake and such
 
Reviving this thread and this idea.

Wedge some blocks of wood cut into angled pieces and wedge them between your pipes and the floor or frame use about 3 per side that should take any exhaust noise out then remove them 1x1 to isolate the problem and it may be as simple as the hanger you changed

The crossover seems to have improved things but there is still a vibration and it feels like it’s exhaust related.

While the car was idling today, I saw the exhaust pipes “wobbling” up and down.

C3 corvettes usually have hangers supporting the middle. Mine were deleted.

The pipes pass through holes in the cross member.

I’m thinking about wedging some wood in there (as suggested above) to see if that changes things.

Isn’t that risky in terms of fire ?
 
I doubt it that far from the engine. If you are concerned and have an IR gun, then measure
the temp after driving for 10-15 minutes.
 
keep in mind the ignition temp on wood varies but most won,t take 300F indefinitely,
without charring, smoking or igniting. by 300C damn near any wood ignites
as a short term test its a good idea, as a solution.... no.
 
Absolutely - this is just to find out if it makes a difference, or if I am chasing my tail.
 
I wouldn't think that doing anything would be chasing your tail in this situation anything that sounds any way reasonable I would try you are trying to find a hidden gremlin
 
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