Ok, the quick rundown. Got an 03 Cobra IRS from ebay for my 88 Thunderbird. The owner had 3.90's in it but said he'd put 3.55's back in it for me; he also said it was just rebuilt with a 'master rebuild kit'. The guy claimed he worked at a big speed shop, outfitting cars for drag racing and that he sold the IRS units for customers when they got into the range of too much power for them to be efficient, cost wise. But, I think it was BS because when I picked up the IRS it was sitting in a carport at his apt complex. So, I'm guessing he had no clue what he was doing when he put the 3.55's back in.
So, the clunk. I haven't gone above 20 yet but I have a speed sensitive clunk from the rear-end (can't tell if it's more on one side or not) and I'm just wondering if anyone could list all the possibilities; gears or otherwise.
So, the clunk. I haven't gone above 20 yet but I have a speed sensitive clunk from the rear-end (can't tell if it's more on one side or not) and I'm just wondering if anyone could list all the possibilities; gears or otherwise.