[Z06] Vibration issues
Thread Starter
Racer
Joined: Feb 2014
Posts: 326
Likes: 19
From: Decatur AL
Vibration issues
Well I have a stock 03 Z and my bro just picked up a 03 Z yesterday. His car is cammed with a fast 102 and a 102mm throttle body on a speed density tune. The cam is less than .600 lift(i dont remember the exact specs on it) also the car has unknown brand LT's into the factory Ti exhaust including the cats. The car vibrates a LOT or at least more than I would like.
My question is is there something wrong with the car or do all the cammed cars have such a big degree of vibration over stock. I have ridden and driven other cammed LS cars(not a Vette) before and the vibration and rattle/noise wasnt such a huge difference over stock.
I just want to know that if I cam my car(I really plan to) will it vibrate rattle and be so noisy compared to stock. If so I won't cam the car because I dont want the ride to be so much worse.
My question is is there something wrong with the car or do all the cammed cars have such a big degree of vibration over stock. I have ridden and driven other cammed LS cars(not a Vette) before and the vibration and rattle/noise wasnt such a huge difference over stock.
I just want to know that if I cam my car(I really plan to) will it vibrate rattle and be so noisy compared to stock. If so I won't cam the car because I dont want the ride to be so much worse.
Thread Starter
Racer
Joined: Feb 2014
Posts: 326
Likes: 19
From: Decatur AL
He is going to have the tune looked at at and probably going to put a MAF back on it and get rid of the speed density tune. Also I think there is a serious exhaust leak. Maybe all of this will help with the rideability.
Race Director
Joined: Jan 2008
Posts: 16,028
Likes: 170
From: oregon
engine vibration or drivetrain? if the clutch was changed and it's drivetrain that would be my first suspect
if it's engine it's probably the way the cam is designed. if it smooths out as you rev it up it could just be a cam with a good deal of overlap. a 110-112LSA could induce a bit of idle vibration
if it's engine it's probably the way the cam is designed. if it smooths out as you rev it up it could just be a cam with a good deal of overlap. a 110-112LSA could induce a bit of idle vibration
Thread Starter
Racer
Joined: Feb 2014
Posts: 326
Likes: 19
From: Decatur AL
I believe his cam is on a 114 with +2 overlap. I haven't driven his car but I really want to so that I can determine if it is the car or if it just evens out while I drive it. Thanks for all the input guys.
Thread Starter
Racer
Joined: Feb 2014
Posts: 326
Likes: 19
From: Decatur AL
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Racer
Joined: Sep 2012
Posts: 375
Likes: 0
From: Ohio
Is it only doing it at idle?
Look at the Data Logger and see if the Timing is jumping up and down at idle, My car did that when I got it and it would shake the car pretty bad because of it
Look at the Data Logger and see if the Timing is jumping up and down at idle, My car did that when I got it and it would shake the car pretty bad because of it
Last edited by 1999Firehawkls1; Mar 20, 2014 at 05:41 AM.
Thread Starter
Racer
Joined: Feb 2014
Posts: 326
Likes: 19
From: Decatur AL
I agree that something isn't right, but he won't listen to me...not my problem. Well atleast I know that when I cam my car as long as things are "right" I won't have the issues that he is having.
Thread Starter
Racer
Joined: Feb 2014
Posts: 326
Likes: 19
From: Decatur AL
Possible he is going to have it looked at soon. Also we learned that there is a HUGE vaccum leak. A vaccum line is completely gone. Its the one from the passenger side head that goes to the intake and puts "unmetered" air into the engine. Atleast thats how it was explaine to me..its obvious its missing and he is replacing it tomorrow. That also may help! And a re-tune is scheduled also.