kaboooom! bye bye 200c
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From: Northern CA.
Car: '82 Z28
Engine: 350
Transmission: TH400 4,000 stall
Axle/Gears: Currie 9", 4.56 gears
kaboooom! bye bye 200c
Well, the transmission finally let go today in a big way. I was on my way home, just pulled out of a parking lot, went full throttle untill boom! (about 2 seconds on the gas pedal WOT) Tried to slow to make a turn onto my road but of course when you have transmission fluid on your rear tires, that's not easy to do. Slowed down enough to make it into a parking lot and got a tow home. The pattern on the road makes it look like there's a hole in the torque converter. Did the mighty 305 just have too much for it? LOL if you want, give me your thoughts on what let loose. BTW, it's been shifting kind of bad on the 1-2 shift, sort of lazy.
edit: it also broke the plastic cover in two, you can just see the edge of it in the picture.
edit: it also broke the plastic cover in two, you can just see the edge of it in the picture.
Thread Starter
Supreme Member
iTrader: (1)
Joined: Apr 2000
Posts: 5,321
Likes: 4
From: Northern CA.
Car: '82 Z28
Engine: 350
Transmission: TH400 4,000 stall
Axle/Gears: Currie 9", 4.56 gears
Ok, finally got under the car again for a closer look to see what happend... I was unbolting the torque converter bolts when on turning to the second one, fluid started dripping out at a pretty good pace. I looked up and saw some shiny metal and felt a nasty ridge
It's about an 8 inch or so rip/crack in the converter
Also found some nuts and bolts loose from the rear end swap, should have known there was going to be problems because of the idiot who was helping me with that
Anyway, the TH400 is getting rebuilt in a couple days to replace the TH200c :hail:
It's about an 8 inch or so rip/crack in the converter
Anyway, the TH400 is getting rebuilt in a couple days to replace the TH200c :hail: Supreme Member
Joined: Nov 1999
Posts: 1,507
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From: Elizabeth, Colorado
Car: '94 Corvette
Engine: LT1
Transmission: 4L60E
I've grenaded cases, sprags, races, shafts, and flexplates, but never split a converter !!! Good job !!! 
It sounds like the converter balloon'ed beyond limits
Ron

It sounds like the converter balloon'ed beyond limits

Ron
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Supreme Member
iTrader: (1)
Joined: Apr 2000
Posts: 5,321
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From: Northern CA.
Car: '82 Z28
Engine: 350
Transmission: TH400 4,000 stall
Axle/Gears: Currie 9", 4.56 gears
hehe thanks!
Dropping the tranny later today and cutting open the converter on the CNC mill just for kicks. When that converter let loose, it sounded like a M80 going off
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Joined: Jun 2001
Posts: 3,238
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From: Calgary, Alberta, Republic of Western Canada
Car: 1986 Sport Coupé
Engine: 305-4v
Transmission: 700R4 and TransGo2
EvilCartman,
I want to get my engine up to the same parts as yours. What is you quarter mile time with that setup?
I want to get my engine up to the same parts as yours. What is you quarter mile time with that setup?
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Joined: Apr 2000
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From: Northern CA.
Car: '82 Z28
Engine: 350
Transmission: TH400 4,000 stall
Axle/Gears: Currie 9", 4.56 gears
Originally posted by Sitting Bull
EvilCartman,
I want to get my engine up to the same parts as yours. What is you quarter mile time with that setup?
EvilCartman,
I want to get my engine up to the same parts as yours. What is you quarter mile time with that setup?
Originally posted by JAY87GTA
Did it ever rattle or make noises? I think mine is on the way out so I'm curious as to what yours did. Thanks
Did it ever rattle or make noises? I think mine is on the way out so I'm curious as to what yours did. Thanks
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Joined: Feb 2002
Posts: 2,663
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From: Buckhannon, WV
Car: 84' Monte
Engine: 350
Transmission: 700-r4
Axle/Gears: ferd 9" posi 3.50 gears
Might want to check the motor out too. IF the converter balloned on ya it coulda taken out a thrust bearing.
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iTrader: (1)
Joined: Apr 2000
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From: Northern CA.
Car: '82 Z28
Engine: 350
Transmission: TH400 4,000 stall
Axle/Gears: Currie 9", 4.56 gears
The motor seemed to run just fine, still holding steady at 60 psi for oil pressure. The converter slid back on the shaft after unbolting it so there wasn't any pressure on the crank at that time... If the motor does let loose down the road, I'm in the works on getting another one put together right now.
Thread Starter
Supreme Member
iTrader: (1)
Joined: Apr 2000
Posts: 5,321
Likes: 4
From: Northern CA.
Car: '82 Z28
Engine: 350
Transmission: TH400 4,000 stall
Axle/Gears: Currie 9", 4.56 gears
I'd like to have a standard for my next car but this is turning into a drag car lol plus the TH400 should stand up well against the punishment of some BBC power
Just priced one out today and damn, it looks like it might be cheaper than the 350 I was planning on building.
Just priced one out today and damn, it looks like it might be cheaper than the 350 I was planning on building. Thread
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