Pop/clunk noise when launching in 1st

corruptor

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Has anyone ever had a light pop or clunk noise when launching in 1st gear? Almost felt like the rear hit the bump stops but I don't hit bump stops in normal driving. I could slightly feel the pop through the floorboard.

Suspension setup is:
FRPP "P" Springs 1" drop
Koni Sport Struts, set close to softest setting
Whiteline LCA relocation brackets, bolted and welded
Roush billet LCAs
Stock UCA
BMR panhard bar
Stock panhard support brace

Checked my rear axle tube and nothing looks like it's bent or twisted. Tire is centered within the wheel well. I'm wondering if it's either the bump stop or differential.
 

ICU 5.0

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Check you LCA bolts. Make sure they are torqued to spec and haven't loosened up a bit. I have also heard that the UCA can make a popping noise.
 

corruptor

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By the way, I have a manual trans with MGW short shifter.

Will double check the LCA and UCA bolts. Anybody else experience this?
 

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