VT Manual 5.0 rear end noise under load

[IBLOWN]

Hey guys me again...

This SS is driving me crazy, bloody V8's

Under load in 1st gear i get this creeking sort of sound which is pretty loud coming from what seems the rear end. Seems to be worse when it hits a bump while accelerating. It only makes the noise for a split second or as it hits a bump. Its not a constant noise when it happens.

I only have to give it 1/2 throttle in 1st for it to make the noise. It squats pretty hard.

I really dont know if its a suspension problem or a drivetrain problem.

To me if you can imagine like 2 flanges being bolted hard up against each other then they slip. But it could be like something rubbing.

Tyres dont scrub as i changed them to 15's for a test. Originally i thought it was the 19's scrubbing.

Just wanted to see if anyone else has had this problem.

[Blown V6 Hatch]

Broken rear K frame. Jack it up, have a good look at the K frame for cracks. Very common on IRS Commodores, especially V8 manual ones.

[IBLOWN]

Broken rear K frame. Jack it up, have a good look at the K frame for cracks. Very common on IRS Commodores, especially V8 manual ones.

I jacked it right up and couldnt see any cracks. Or has it cracked somewhere i cant see?

[IBLOWN]

Im pretty confident after looking for an hour theres no cracks in the K frame. Its funny because the sound it makes really fits the description.

[UTRIED]

check with a mirror the top side of the IRS frame on the first bend nearest to the diff center,normally drivers side goes first.

[UTRIED]

also check the big round bushes that mounts it to the car grab a big bar and lever on them see if they are gone

[IBLOWN]

The noise has got alot worse now. Im pretty confident its coming from the front now.

When you accelerate harder than normal the front end lifts and makes a real scraping metallic sound (sort of like a bush or something rubbing up a thread) just fort a split second until the load comes off, the front end comes back down and it makes the same noise.

Any ideas? Engine mount maybe?

I put some load on the radius rod bushes and they seemed pretty loose but i can see how they would make the noise.