grinding noise...

[tigersport14]

ok so the other day i was drivin, and my friend was next to me in his camaro. he noticed that when i dropped it in 2nd (we were going about 45) it made a grinding noise. its an a4 ... anyone know what it could be?

[0rion]

I'm moving this to the tranny forum where you'll get more/better responses.

[tigersport14]

ok thx. sorry about posting it in the wrong section. anyone know what the problem is?

[35thAnniZ28]

got headers?!?!might be rubbing against the frame...
only way of fixing that noise is by putting polyurethane bushings..or tranny mounts ..but never heard of that ..hhmm

[tigersport14]

its a stock 04 ls1 with 5k miles

[35thAnniZ28]

when it shifted during wot...did it grind? if so..the rear end might need a gm additive

[tigersport14]

ill have to check that out. thx for the help!

[35thAnniZ28]

i remember mine also did that when it was stock....just added the gm additive...probably a good 3-5 thousand miles laters....stopped hearing the grind noise when shift changes occured during wot

[shady milkman]

dont shift it into 2nd when driving...its a pain on the whole tranny ect. just keep it in 3rd when you want to race...when in third and you shift you have use of 3 clutch packs i believe compared to 1-2(dont quote me on the numbers) 1 & 2 are for towing and not recomended for constant driving unless you get your self a shift kit/built tranny

[shady milkman]

try the additive, if not i would think your gear might be screwed.

[35thAnniZ28]

hey shady i got a couple of questions....i changed the gear fluid while i was swapping bearings....i put lucas 60/90... whats the recommended weight i shouldve put...i noticed the stupid hum when accelerating...

[35thAnniZ28]

oh yeah..and would you know anywhere i could buy axles???

[shady milkman]

look in the manual under the recommended fluids