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Rounded top bellhousing bolt

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Old Jul 18, 2009 | 04:31 PM
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Car: 91 RS
Engine: 350 TBI
Transmission: WC T5
Axle/Gears: 3.42 Posi
Rounded top bellhousing bolt

I'm trying to take out my 700R4. The top passenger side bellhousing bolt was givng me trouble, I eventually rounded it off with a socket. Anybody have to deal with this before? 6 pt socket still spins, and there's no way I can get a 14mm over it.

Last edited by Darkshot; Jul 18, 2009 at 04:51 PM.
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Old Jul 18, 2009 | 04:53 PM
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From: Mercedes Norte, Heredia, Costa Rica
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
Re: Rounded top bellhousing bolt

Have you got enough room to grind the head off?
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Old Jul 18, 2009 | 04:55 PM
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Car: 91 RS
Engine: 350 TBI
Transmission: WC T5
Axle/Gears: 3.42 Posi
Re: Rounded top bellhousing bolt

Not a chance, I can barely fit my skinny arm up to even touch the bolt, let alone get a tool up there.
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Old Jul 18, 2009 | 08:39 PM
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From: NY
Car: 86 Iroc
Engine: 383
Transmission: TH350
Axle/Gears: 3:73s!
Re: Rounded top bellhousing bolt

get some bolt extractors like this....
http://www.irwin.com/irwin/consumer/...rwinProd100512

Pound it on, and make sure the bolt gets all the way on, those will take it off, Ill bet money on it, thats what i use at the shop all the time.
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Old Jul 18, 2009 | 09:09 PM
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From: MA
Car: '87 IROC/'68 SS
Engine: 5.7L/350
Transmission: 700R4/Muncie 4-spd
Axle/Gears: 3.27 9 bolt / 3.31 12 bolt
Re: Rounded top bellhousing bolt

Originally Posted by 86camaro383
get some bolt extractors like this....
http://www.irwin.com/irwin/consumer/...rwinProd100512

Pound it on, and make sure the bolt gets all the way on, those will take it off, Ill bet money on it, thats what i use at the shop all the time.
He probably doesn't have room to do that either. First, throw out those 12 point sockets and try a 6 point.
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Old Jul 18, 2009 | 09:34 PM
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From: Big Rock,IL
Car: 91 RS
Engine: 350 TBI
Transmission: World Class T-5
Axle/Gears: 3.27 9-Bolt LSD
Re: Rounded top bellhousing bolt

Could always go from the top too. Thats how I got mine out.
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Old Jul 18, 2009 | 11:37 PM
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Car: 91 RS
Engine: 350 TBI
Transmission: WC T5
Axle/Gears: 3.42 Posi
Re: Rounded top bellhousing bolt

Are these the right bellhousing bolts?!?!?! They look like what used to be holding together my wooden play structure. Just doesn't look very GM to me, but it's what I took out (and what is still on there, rounded off).


http://i371.photobucket.com/albums/o...7/camaro/2.jpg


http://i371.photobucket.com/albums/o...camaro/1-1.jpg
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Old Jul 18, 2009 | 11:57 PM
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From: NWOhioToledoArea
Car: 86-FireBird
Engine: -MPFI
Transmission: T5
Axle/Gears: 3:42
Re: Rounded top bellhousing bolt

You can sometimes pound a standard onto a metrix rounded off bolt n vise versa. Them bolt removers are good but there is a point where they don't works as most kits only come with 5-6 sockets that "fit" every size. Both standard n metric. They don't always fit though, been caught where it was to small or to big before. Thats when ya ram a cheap socket on there. Then chuck it and the bolt into the woods once off
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Old Jul 18, 2009 | 11:58 PM
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From: moberly, Mo
Car: 91 rs
Engine: 383 290 cam aed carb
Transmission: th350
Axle/Gears: 4.10 ticking time bomb
Re: Rounded top bellhousing bolt

Those may just be standard hardware store bolts, which probably are softer making them easier to strip.


Why are you removing them? if it is to remove the trans than I would reccomend installing one of the easier to remove bellhousing bolts, then droppin the crossmember, this should allow the trans to and motor to hang a few inches and give you some room to put on a six point 14mm american made socket.

If you are pulling the motor, than just take the trans with it.
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Old Jul 19, 2009 | 02:04 AM
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From: Mt. Juliet, TN
Car: 1984 Z28
Engine: none
Transmission: none
Axle/Gears: 3.73
Re: Rounded top bellhousing bolt

If you can get that irwin bolt extractor on it, it should get that sucker out. I used one to removed a rounded cylinder head bolt from a motor I was getting from the junkyard, if it can get a head bolt out it should be able to loosen just about anything.
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Old Jul 19, 2009 | 02:24 AM
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From: jackson new jersey
Car: 1991 camaro vert
Engine: ls1 soon
Transmission: t56 soon
Axle/Gears: moser 12bolt 4.10 soon!
Re: Rounded top bellhousing bolt

get the "gator socket" it looks like a regular deep socket filled with little pins that move up when put on to a bolt and it grabs everything ive never had a problem getting a completly rounded off bolt with this.. and its only like 5 bucks.. go to sears they'll have everything u need..
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Old Jul 19, 2009 | 08:05 AM
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Axle/Gears: 3:73s!
Re: Rounded top bellhousing bolt

Originally Posted by jv9999
He probably doesn't have room to do that either. First, throw out those 12 point sockets and try a 6 point.

Why not? Drop the tranny x-member, use a 3ft extension with a universal, he should have all the room in the world.
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Old Jul 27, 2009 | 12:19 PM
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From: RHODE ISLAND
Car: 1988 iroc-z
Engine: 350 Vortec TPI
Transmission: 700r4
Axle/Gears: 3.73 4th gen Torsen 10bolt
Re: Rounded top bellhousing bolt

find someone with a blue tip wrench ( oxygen & acetleyne ) to blow the head off the bolt. if they know what there doing it will take about 10 seconds.
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Old Jul 28, 2009 | 12:53 AM
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Car: 91 RS
Engine: 350 TBI
Transmission: WC T5
Axle/Gears: 3.42 Posi
Re: Rounded top bellhousing bolt

I cut the head into a T shape with a dremel from the top allowing the washer to fall off. Then I could grab the T shape with a large inverse Torx bit and backed it right off.
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