anybody around the central part of NC that are experts on the LS1 cars? I need one to diagnose a problem whether it be a shop or somebody. TIA

 

why dont you tell us whats wrong with it or what its doing and maybe we can help....

 

well im gettin a vibration around 3000 rpm's. almost like a roaring sound/vibration and feels like its under the console. Its making noise in my backend(hatch). When im in Park and Neutral it wont do it but put it in gear and start getting on it some start feeling it(not in the steering wheel) around 2600-3000 rpms. What the heck guys??!!!

 

driveshaft? transmission mount??

 

u think its the tranny mount?

 

tranny mount more than likely. or your torque arm mount could be getting loose. but i would check the tranny mount first.

 

ill get a mechanic to check it out tomorrow. Is it hard to replace? you guys recommend stock piece or poly?

 

My 98 car did that and it turned out to be the bolts on the driveshaft being loose. Hope you find the prob and if not you always can drive a hour and let Nick check it out.
Thanks again for the cats, they should get here tomorrow.

 

stock. def.

 

stock, poly will give you more vib.... and no its not hard to replace, verry easy actually.

good luck

 

hey guys would a loose PHB cause vibration and chatter in the backend? Im thinking i may need to check that out or LCA's???

 

If you buy a poly mount, get a 1LE piece. The energy suspension piece will definately cause vibration. Nothing wrong with it, it's just a harder material and you feel more of the vibration in the car. I had the same problem with mine and it was the trans mount. I had the energy suspension mount though. But, like the other guys said check for loose bolts and wear and tear before replacing stuff.

 

Well took it to a local mechanic and drove him up the road so he could hear it. He says its exhaust drone. Im sorry but thats what my hooker catback with catted Y fixed correct??? He said the trans mound looked ok..he took a prybar and moved it and he said it was fine. He took a prybar to the PHB and LCA's and pry'd on them and he said they felt ok. He said there was no need to tighten the bolts. WTF guys??

 

im not buying exhaust drone. just because he couldnt move it with a pry bar doesnt mean its not broke under a load from the motor.

i say replace the the mount and go from there. Prolly wouldnt hurt to replace it even if its not broke.

 

can you even tell by looking at it that its ok?

 

i've got an energy susp. mount in my car, and it vibrates pretty bad, but it beats replacing tranny mounts every few months. f-bodies are notorious for busting tranny mounts, even my 3rdgen ate them for breakfast. i'd swap it out, it's only like 10-20 bucks, and you can do it in the driveway. very easy swap.

 

not just by looking at it. Just put another stocker in there and be done with it. You could do a poly mount but you will hate it. Sure...it wont break or move...but it will vibrate to high hell and back. i put one in once back when i had the auto....drove it around the neighborhood and took it out as soon as i got back.

 

its a 7 bolt job.

2 in each side of the crossmember....
1 in the center of the crossmember...
2 on the mount bolting to the tailshaft of the tranny....

piece o-cake.

 

Is your exhaust system broke or cracked anywhere? Are all the tranny an torque arm bolts tight? Is the driveshat dented anywhere. Also, if the tailshaft bushing in ur transmission is worn out it will cause a vibration while the car is moving. I ran into that problem on my car one time. Double check every nut and bolt and just look over everything twice. Your bound ta find the problem. Hope you get it fixed.

 

yeah me too bought to kill me bro!