Rear End noise
Thread Starter
Burning Brakes
Joined: Sep 2010
Posts: 799
Likes: 26
From: Lexington Park Maryland
Rear End noise
So I finally dialed in the accellerator pump adjustment, now I have smooth throttle response. So I decided to test it out and feel some "Gs" making some fast/quick turns. But when I do that I hear a noise when I turn sharp to the left, like something is shifting and hitting a stop of some sort.
The rear components on this 72 LT1 are original. Where/what to start looking for wearing parts (bushing)? Thankyou
The rear components on this 72 LT1 are original. Where/what to start looking for wearing parts (bushing)? Thankyou
Melting Slicks
Joined: Jul 2009
Posts: 2,091
Likes: 40
So I finally dialed in the accellerator pump adjustment, now I have smooth throttle response. So I decided to test it out and feel some "Gs" making some fast/quick turns. But when I do that I hear a noise when I turn sharp to the left, like something is shifting and hitting a stop of some sort.
The rear components on this 72 LT1 are original. Where/what to start looking for wearing parts (bushing)? Thankyou
The rear components on this 72 LT1 are original. Where/what to start looking for wearing parts (bushing)? Thankyou
If you don't know when or if it was done , first thing I'd do is drain the posi traction diff fluid . Put in new GM fluid and the GM additive pkg. stuff will be about 100.00 in fluids .....use only GM !
The post interaction diff clutch plates will bind and make the noise you describe only when turning , and it can be intermittent and get worse over time. The special lubricant has lost it's ability to do its job , broken down with age.
Last edited by LS4 PILOT; Apr 30, 2015 at 09:23 AM.
Thread Starter
Burning Brakes
Joined: Sep 2010
Posts: 799
Likes: 26
From: Lexington Park Maryland
Put it on a lift , visually inspection. See if anything looks obvious wrong.
If you don't know when or if it was done , first thing I'd do is drain the posi traction diff fluid . Put in new GM fluid and the GM additive pkg. stuff will be about 100.00 in fluids .....use only GM !
The post interaction diff clutch plates will bind and make the noise you describe only when turning , and it can be intermittent and get worse over time. The special lubricant has lost it's ability to do its job , broken down with age.
If you don't know when or if it was done , first thing I'd do is drain the posi traction diff fluid . Put in new GM fluid and the GM additive pkg. stuff will be about 100.00 in fluids .....use only GM !
The post interaction diff clutch plates will bind and make the noise you describe only when turning , and it can be intermittent and get worse over time. The special lubricant has lost it's ability to do its job , broken down with age.
