Just got a 03 cobra with 44,000 miles on it, great condition, 3.10 pulley and catback exhaust already on it, only thing wrong is that when i, or anyone else, shifts it, theres a slight bump, feels like its in the rear, i cant feel it through the shifter or anything, any ideas what could cause this?

 

That is your IRS


Usually cobras with more miles on them will have a differential that has a little give. Usually the clutch engaging causes that clunk. Pretty normal, Cobra's make a lot of noise.

 

alright, doesn't sound like too big of a deal, i was doing some reading since i've posted that and it seems like a common thing

 

+1 ^^^^ ...any pics of that Cobra?? ...what CB and any other mods becides the pulley?

 

alright heres my cobra and my dads 07 cal special gt
since this pic i've fixed the front bumper chips, put on a sweet cobra front liscence plate, the catback is magnaflow and it has a blower belt tension pulley thats it.
i plan to add a cold air intake, tune, and a 2.8 pulley maybe some headers

 

Very nice. Can't wait to see more. Don't worry too much about that clunk. I have the same problem in my 01. Had it for 5 months now and no performance change.

 

Nice! ...I'd go with a JLT CAI ...and your going to need a tune! ...What about the HE?

 

i was thinking something along the lines of these headers, but they're last on my last of upgrade

http://www.brothersperformance.com/c...oducts_id/2503

definitely going to do air intake, jlt or BBK
tuner, sct livewire is what im leaning toward
and a smaller pulley

but im currently broke as a joke and will be making nice big car payments so it might be awhile before i get it all done, not to mention way down the road there might be a big ole kb blower

 

If you do headers, go with KOOKS... Don't cheap out with your car.

 

Or ARH!