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Ugghhhhhh

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Old Dec 27, 2009 | 10:11 PM
  #1  
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Car: 89 IROC/05 RX8
Engine: LS1/LS1
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Axle/Gears: 3.42 GM/3.55 8.8
Ugghhhhhh

Well,

Tore my motor outta the trans am to inspect everything, put a bigger cam in, install a new timing set etc etc.

Upon removing the pan, i found shavings against the pickup, and when i removed teh cam, a bearing came out with it

So, spun a cam bearing, destroyed a near brand new comp cam (1700 miles), rod bearings arent brutal, crank needs to be polished.

Either way, financially this is more then i can take, so im selling all my mods, wrapping the 6.0L shortblock up, setting it aside. Ill put a 5.3L in the car, and eventually ill get back to the motor to build a nice turbo or supercharged setup.

In the mean time, i get to loose 500hp, and have a slow *** 320hp 5.3L trans am

Needless to say, this has crushed me. Ive been so excited for how the car would be in the spring, now im depressed, and selling all my mods to recoup some funds.

F my life.



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Old Dec 27, 2009 | 10:17 PM
  #2  
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From: South Carolina
Car: 85 2M6, 87 'Bird 88 'burb
Engine: LX9, LG4, L05
Transmission: F23, 700r4, 700R4
Axle/Gears: 3.63, 2.73, 4.10
Re: Ugghhhhhh

could be worse, could have an L03 like I do. I'd love a 320 horse 5.3 right about now!!

Better yet, an L03 backed by a 700r4 that's lost 3rd and 4th gear, now thats fun to drive right!

Last edited by ericjon262; Dec 27, 2009 at 10:23 PM.
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Old Dec 27, 2009 | 10:38 PM
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From: 39.84N 105.11W
Car: '89 Trans Am GTA
Engine: WAS 350 - now L92 (alum. 378/6.2L)
Transmission: WAS 700R4, now a built T56
Axle/Gears: 3.27 9-bolt
Re: Ugghhhhhh

Dang, sorry to hear that Sheldon, that really sucks. But I'll bet that if you give it time, the sting will fade a bit, & it won't seem quite as jacked up as it is now.

Although it definitely does suck.
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Old Dec 27, 2009 | 10:43 PM
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Car: 1991 Z28 convertible built 3/1/1990
Engine: Cammed 6.0L LSX
Transmission: T56
Axle/Gears: custom Ford 8.8", 4.10 gears
Re: Ugghhhhhh

Man Sheldon, that sucks big time. I'm sorry to hear that. What kind of mods will you be selling? Maybe some of us can help you out by buying up some of the stuff.
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Old Dec 27, 2009 | 10:54 PM
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Car: 89 IROC/05 RX8
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Transmission: T56/T56
Axle/Gears: 3.42 GM/3.55 8.8
Re: Ugghhhhhh

Appreciate it guys!

You guys are like an extended family, such a awesome community in the LSx/LTx area here!

Here's my LS1tech thread:

http://www.ls1tech.com/forums/lsx-pa...ctors-etc.html

I know money was getting super tight in relation to my move, so im hoping this is a way of me keeping my car and recouping some funds. Atleast ill still have my iroc-z and the 6.0L, so eventually ill be able to do something great with them
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Old Dec 28, 2009 | 01:51 AM
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Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Any clue what happened to the cam bearing?
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Old Dec 28, 2009 | 08:19 AM
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Transmission: T56/T56
Axle/Gears: 3.42 GM/3.55 8.8
Re: Ugghhhhhh

Not sure, the block isnt damaged, but the cam is smoked, it looks like it got really hot from the spinning. Theirs shavings everywhere in the motor, so i know its hosed.

looks like the cam was rubbing the bearing, then got hot enough to microweld itself to the bearing, and brought the bearing with it.
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Old Dec 29, 2009 | 07:52 AM
  #8  
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Car: 87 Trans am
Engine: 350tpi
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Re: Ugghhhhhh

I'm no expert but I thought if a cam berring spun in a block the block was junk. Not sure but I would definatly mesure the bore to be sure.
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Old Dec 29, 2009 | 09:23 AM
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Car: 89 IROC/05 RX8
Engine: LS1/LS1
Transmission: T56/T56
Axle/Gears: 3.42 GM/3.55 8.8
Re: Ugghhhhhh

I havent measured it yet, but visually checking their is 0 scoring, wear or anything on the block. looks like the bearing left, and then almost as if the bearing acted like it was still a bearing, but attached to the cam, rather then the block?

Ill find out soon, but their looks to be 0 damage to the block
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Old Dec 29, 2009 | 09:42 AM
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Car: 88' Iroc-Z
Engine: LQ9
Transmission: T-56
Axle/Gears: 3.42
Re: Ugghhhhhh

maybe the cam bearing wasnt lined up correctly and no oil got to that one?
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Old Dec 29, 2009 | 11:15 AM
  #11  
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From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
No oil would be my first guess.
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Old Dec 29, 2009 | 08:48 PM
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From: Beloeil, Quebec
Car: IROC-Z
Engine: LSx
Transmission: T56
Axle/Gears: Fabbed 9"
Re: Ugghhhhhh

Dude, I feel your pain. **** like that makes me wanna sell everything and get a Prius.
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Old Dec 29, 2009 | 10:18 PM
  #13  
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From: South Carolina
Car: 85 2M6, 87 'Bird 88 'burb
Engine: LX9, LG4, L05
Transmission: F23, 700r4, 700R4
Axle/Gears: 3.63, 2.73, 4.10
Re: Ugghhhhhh

Originally Posted by Spike-Z
Dude, I feel your pain. **** like that makes me wanna sell everything and get a Prius.
WHAT???
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Old Dec 29, 2009 | 10:43 PM
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Engine: 5.3, 4.8
Transmission: 4L80 4000, T56
Axle/Gears: 4.30 M12, 23.42 10 bolt
Re: Ugghhhhhh

Chewed up the cam bearings in my 383 i had, never knew why.
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Old Dec 30, 2009 | 08:23 AM
  #15  
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From: 39.84N 105.11W
Car: '89 Trans Am GTA
Engine: WAS 350 - now L92 (alum. 378/6.2L)
Transmission: WAS 700R4, now a built T56
Axle/Gears: 3.27 9-bolt
Re: Ugghhhhhh

Originally Posted by Spike-Z
Dude, I feel your pain. **** like that makes me wanna sell everything and get a Prius.
NOTHING is THAT bad...
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Old Dec 30, 2009 | 10:06 AM
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Car: 92 25th anv z28
Engine: 346 TC78 Turbo
Transmission: 4L80E
Axle/Gears: 3.25 9"Nodular, Strange axles
Re: Ugghhhhhh

Originally Posted by Spike-Z
Dude, I feel your pain. **** like that makes me wanna sell everything and get a Prius.
Well that means you'll have to become a member of a prius forum...Do they have those??lol
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Old Dec 30, 2009 | 12:20 PM
  #17  
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From: Des Moines
Car: 88 SC, 89 Silvy, 13 Cruze
Engine: LO3, LO5, LUW
Transmission: 700R4, 700R4, M40-6
Axle/Gears: 2.73, 2.73, 3.94
Re: Ugghhhhhh

Originally Posted by Blownz28man
Well that means you'll have to become a member of a prius forum...Do they have those??lol

haha! they do! lol http://priuschat.com/ here you go
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Old Dec 30, 2009 | 03:21 PM
  #18  
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Car: seeking '90.5-'92 'bird hardtop
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Re: Ugghhhhhh

if it spun a cam bearing, then it did damage the block. I've yet to see even 1 exception. So, get a 5.3 block, get it bored and honed to match your 6.0 pistons, and reassemble. If it's an '01-up block, it will safely go that far, and be reliable. Same water jackets. Just more stealthy.
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Old Dec 30, 2009 | 05:12 PM
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Car: 89 IROC/05 RX8
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Transmission: T56/T56
Axle/Gears: 3.42 GM/3.55 8.8
Re: Ugghhhhhh

Its an exception. Ill get pictures for you guys, but visually, im seeing that their is 0 damage to the block.

When i look @ the bore for the cam, there is 0 scoring, 0 marks etc. Essentially looks like the cam bearing was just removed.

Ive measured the cam journals, their would have been .0005" clearance between the bearings & journals, so im not surprised it destroyed it.

Forsure know that comp just either forgot to grind the journal's after they were lathed, or i dunno what. But it wasnt ground, and i never thought that they would do something like that so i never measured the journal diameter.

As for the 5.3L, i bought another 5.3L for $300 from a local JY. Going to throw a little cam in it, and run it with the full bolt ons, maybe see 330-350hp at best. Good enough for now, then the 6.0L will sit aside and ill use it for my iroc-z im thinking.
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Old Dec 30, 2009 | 05:16 PM
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From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Re: Ugghhhhhh

Originally Posted by Blownz28man
Well that means you'll have to become a member of a prius forum...Do they have those??lol
Of course. www.algoreisgod.com
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Old Dec 30, 2009 | 05:46 PM
  #21  
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Re: Ugghhhhhh

Originally Posted by SheldonZ28
Its an exception. Ill get pictures for you guys, but visually, im seeing that their is 0 damage to the block.

When i look @ the bore for the cam, there is 0 scoring, 0 marks etc. Essentially looks like the cam bearing was just removed.

Ive measured the cam journals, their would have been .0005" clearance between the bearings & journals, so im not surprised it destroyed it.

Forsure know that comp just either forgot to grind the journal's after they were lathed, or i dunno what. But it wasnt ground, and i never thought that they would do something like that so i never measured the journal diameter.

As for the 5.3L, i bought another 5.3L for $300 from a local JY. Going to throw a little cam in it, and run it with the full bolt ons, maybe see 330-350hp at best. Good enough for now, then the 6.0L will sit aside and ill use it for my iroc-z im thinking.
What cam? Just the LQ9 cam will get you to 330 HP with a Victor Jr and headers, or the Z06 cam will do it with a pure stock LM7. With the Victor Jr and headers, COMP's smallest Thumpr will get you 433 hp at 6800 rpm. A stock LM7 with headers and a tune will do 344 hp.
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