LCA hilarity
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Junior Member
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Joined: Jul 2004
Posts: 69
Likes: 1
From: Palm Bay, FL
Car: 91 Camaro Z28
Engine: L98 5.7L
Transmission: T-56
Axle/Gears: Ford 9" with 4.30s
LCA hilarity
So I was driving around town and I noticed that my car felt weird. It was also kind of making a noise, which sounded like something was rubbing somewhere. I figured my brake pads were wearing out and made a mental note to check it out when I got home. But, before that, I had errands to do. So after I did my stuff, I get in the car and start backing out of a parking space. All of a sudden the car feels like the rear end disappeared and it's just sitting on the rear tires. I let go of the clutch and it rolls forward just fine. WTF?!
That happened:
http://fitscc.fit.edu/album_pic.php?pic_id=935
That happened:
http://fitscc.fit.edu/album_pic.php?pic_id=935
Supreme Member
iTrader: (5)
Joined: Jan 2002
Posts: 13,622
Likes: 5
From: Orland Park, IL
Car: 1984 Z28
Engine: SLOW carbed ls
Transmission: TH400 with brake, 8" PTC converter
Axle/Gears: moser 9" 4.11
Re: LCA hilarity
no torque arm i take it looking at that design, guessing the metal finally fatigued at that joint point and broke.
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Joined: Mar 2001
Posts: 6,577
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From: Portland, OR www.cascadecrew.org
Car: 1990 Camaro RS
Engine: Juiced 5.0 TBI - 300rwhp
Transmission: T5
Axle/Gears: 3.42 Eaton Posi, 10 Bolt
Re: LCA hilarity
What type of bushing is that on the chassis side? It looks like there is not a spherical bearing. With no free moving bearing, whenever you turn with a setup like that, you bind up, and that probably overworked the metal in a twisting force. I broke a Spohn LCA in a simlare fashion (broke where the bushing went into the tube).
This kids, is why I always tell people, they need to run a spherical bearing on the LCA's to avoid bind!
This kids, is why I always tell people, they need to run a spherical bearing on the LCA's to avoid bind!
Re: LCA hilarity
Just so there is no doubt, if you look at that flake of paint coming off of the edge of the cut you can tell it clearly wasn't cut. It seems like that was a bad spot on the LCA to be putting a lot of pressure on, although I don't know what kind of forces get put on that (apparently the manufacturer didn't either). Thread Starter
Junior Member
iTrader: (4)
Joined: Jul 2004
Posts: 69
Likes: 1
From: Palm Bay, FL
Car: 91 Camaro Z28
Engine: L98 5.7L
Transmission: T-56
Axle/Gears: Ford 9" with 4.30s
Re: LCA hilarity
Yea the other LCA is in an earlier stage of cracking, so it was definitely shitty design and not sabotage. The 9" did not come with a torque arm bracket, but did come with these LCAs. I wanted to enjoy the 4.30s, so I threw it on without a torque arm, just temporarily. I guess it's back to the 10 bolt for a while 
Incidentally, does anyone know where I can buy a torque arm bracket for the 9"? I know moser makes them, but I can't find them listed for sale *anywhere*

Incidentally, does anyone know where I can buy a torque arm bracket for the 9"? I know moser makes them, but I can't find them listed for sale *anywhere*
Joined: Aug 2006
Posts: 12,805
Likes: 107
From: Central NJ
Car: 86 Trans Am
Engine: 408 stroker sbc
Transmission: TKO600
Axle/Gears: Moser full floater m9, 3:70 trutrac
Re: LCA hilarity
does your 9" have the mounting tubes for the bracket? if so just give moser a call and ask if you could buy one
Supreme Member
iTrader: (5)
Joined: Jan 2002
Posts: 13,622
Likes: 5
From: Orland Park, IL
Car: 1984 Z28
Engine: SLOW carbed ls
Transmission: TH400 with brake, 8" PTC converter
Axle/Gears: moser 9" 4.11
Re: LCA hilarity
currie sells just the bracket and tubes IIRC, give them a call and ask. quit wasting time looking online when a 30 second phone call to moser or currie would answer it. Neither of their websites are very helpful.
Member
Joined: Dec 2004
Posts: 136
Likes: 0
From: princeton,west virginia
Car: 89 trans am GTA,90 model trans am 350 tuneport,87 firebird
Engine: 355 small block
Transmission: 5 speed,auto 700r4
Re: LCA hilarity
Looks like that was like that for some time,looking at the rust on the break,but at the very bottom of the break,you can see where it was barley holding it all togeteher. I bet you was like WTF HAPPENED?
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