mysterious vibration - Team Camaro Tech
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post #1 of 11 (permalink) Old Jan 12th, 04, 02:36 PM Thread Starter
 
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I have a vibration at 2500 rpm. it does it in park and drive. I replaced the balancer and i am alomst 100% sure the flywheel is correct. the whole car shakes. Any suggestions accepted.
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post #2 of 11 (permalink) Old Jan 12th, 04, 08:25 PM
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Sean
 
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you say flywheel, but your sig says t350. if its the automatic variety (a th350), try unbolting the torque converter and run the motor to see if the vibration goes away. if it does, its the converter or in the trans (likely converter).
just be careful revving it up, it will free rev plenty quick w/o a torque converter attached.

Sean

1968 rs with an old school 354" SB2.2 pump gas motor.

Repetition does not transform a lie into a truth.

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post #3 of 11 (permalink) Old Jan 13th, 04, 01:31 AM Thread Starter
 
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Yea, I guess i should have said flexplate or whatever the thing is called to be technically correct. I will try unbolting the converter. Thanks.
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post #4 of 11 (permalink) Old Jan 13th, 04, 01:39 AM
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Try some simple things also.... plugs\wires, dist. cap.

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post #5 of 11 (permalink) Old Jan 13th, 04, 01:27 PM
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Be sure that when you unbolt the converter that you have 3/8" or so gap between the converter and flexplate.

Dave
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68 Coupe, 350 w/ Edelbrock Performer RPM heads, cam, intake, 700R4, Dave's small body HEI
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post #6 of 11 (permalink) Old Jan 13th, 04, 05:41 PM
 
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Do some easy things first before unbolting converter.
1. support car SAFELY, remove rear wheels. screw lugs onto studs to keep drums in place, run through gears....could be unbalanced tire, bent rim.

2. remove drive shaft and plug th trans (easy). run the car through gears in place, could be driveshaft
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post #7 of 11 (permalink) Old Jan 13th, 04, 07:20 PM
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Quote:
Originally posted by beagle113:
it does it in park and drive.
That sounds pretty easy to me.

Dave
========================
68 Coupe, 350 w/ Edelbrock Performer RPM heads, cam, intake, 700R4, Dave's small body HEI
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post #8 of 11 (permalink) Old Jan 13th, 04, 08:09 PM
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I have also had a bad waterpump cause vibrations at higher RPM's....it eventually came apart and vibration was gone after replacing... [img]graemlins/clonk.gif[/img]

'69 SS 396/375hp L78 M21 3.73 Fathom green/dark green vinyl top, medium green interior
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post #9 of 11 (permalink) Old Jan 14th, 04, 10:26 AM Thread Starter
 
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I havent had a chance to remove the converter bolts yet but i will very soon. it vibrates in park so i know it isnt the tires or driveshaft.
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post #10 of 11 (permalink) Old Jan 14th, 04, 02:11 PM
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dan
 
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Is it possible you have had troubles with getting a starter to work good with this flexplate?

68 RS
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post #11 of 11 (permalink) Old Jan 14th, 04, 04:11 PM Thread Starter
 
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no, i have not had any troubles with the starter
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