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Clunk and Thud

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Old 12-13-2008, 09:52 AM
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i haven't done a donut since a few weeks after i bought my car. i haven't done a burnout in a few months either. its too cold out to beat on it because I can't hook. I drove it to help a friend with her car and it was fine. Came home. went to go pick up my gf, and it felt like my rear end was banging against the floor boards on low speed turns and skipping like a locker would. When i dropped her off and came home it was getting worse. if i slow rolled it off of a stop sign, it felt like the rear end was gonna fall out something was banging the floor that hard. I drove it to my mechanic this morning for a diagnosis. What do you guys think it is? One of my fellow f-body buddy's thinks its the posi. Any other input? About how much am I looking to spend here? If thats the case, is there anything else I should replace too?
Old 12-13-2008, 11:22 AM
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I had the clunk and thud..it was posi and axle end. Installed an Eaton and Mosers.
Old 12-13-2008, 12:05 PM
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the spiders and clutches are toast. what should i buy to get it fixed? i can't afford a 9 inch right now. my mechanic recommended replacing the posi and i might as well do the gears at the same time. what parts do i need?
Old 12-13-2008, 12:23 PM
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an Eaton posi, AAM gears, a master install kit with all the bearings and you might as well go with Moser axles. MOST important get the right person to set all of this up. Have fun!
Old 12-13-2008, 12:28 PM
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the posi is like 450 right? and a gear and install kit is about 420 through texas-speed. where can i get moser axles?
Old 12-13-2008, 01:24 PM
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Give Moser or Summit/Jegs a call.. I believe they were like $235 for the pair (I have 3 channel ABS)..28 spline is what you want.
Old 12-13-2008, 01:53 PM
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Originally Posted by omcar
Give Moser or Summit/Jegs a call.. I believe they were like $235 for the pair (I have 3 channel ABS)..28 spline is what you want.
with your built stock rear how has it held up. people on this site like by their 3 grand 9", but i never plan on having more than 350-400 hp, would a built 10 bolt be able to hold that?

didnt mean to hijack by the way.
Old 12-13-2008, 01:56 PM
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Originally Posted by twitchtwice
with your built stock rear how has it held up. people on this site like by their 3 grand 9", but i never plan on having more than 350-400 hp, would a built 10 bolt be able to hold that?

didnt mean to hijack by the way.
its a good hijack. i'm curious too...i plan on making about 400rwhp cam only, and then spraying a 125 shot til the motor blows...i'm not gonna spray off the line though
Old 12-13-2008, 02:32 PM
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Look, I have a 10 bolt that I have been bracket racing 3-4 times per month for 8 years.. See my sig for stats on car. Have not broken a gear only a posi. Mine is an auto and i launch at 2,500..wayyy different than a stick.
Old 12-13-2008, 02:42 PM
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those are damn good times, do u have headers?
Old 12-13-2008, 06:23 PM
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no headers...really good air at Maple Grove raceway.




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