Separating 4T60E from 3100 V6

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jeff540
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Separating 4T60E from 3100 V6

Post by jeff540 »

Hey guys,in the middle of replacing my 3100 and need to know the secret to separating the motor from the tranny. got all 6 bellhousing bolts out,torque converter bolts out,rear passenger side tranny mount out, engine ready to be pulled but tranny won't let go, trying to pull the motor and leave the tranny in place. the car: 95 chevy beretta Z26.TIA.
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Re: Separating 4T60E from 3100 V6

Post by DTMAce »

I'm going to assume you pulled the starter? lol

May have to pull the driver's side tranny mount, so you can shift it more to allow space to get it loose, I'm thinking. But this is from someone who hasn't yet done an engine swap on a beretta. haha

I wouldn't think the axles need to be pulled for this. Best man for the answer (as I know he has done it several times) would be 3x00 (Jon) one of the mods here.

Good luck!
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Re: Separating 4T60E from 3100 V6

Post by jeff540 »

Thanks and yes starter was pulled,that's how i got the torque converter bolts out. I did not remove the driver's side tranny mount,but that may help a lot.I am at the point where I am ready to drag my beretta around the yard sideways with my jeep to separate the 2.I'll see if JON posts what I should do next.I'd like to leave the tranny,axles,wheels and tires on the car,and just pull motor and do some degreasing and painting before I replace.But holycow....
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Barry
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Re: Separating 4T60E from 3100 V6

Post by Barry »

Did you remember the tranny bolt that comes in from the engine side and threads into the trans?

Theres really nothing else holding it to the motor that I can think of
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Re: Separating 4T60E from 3100 V6

Post by jeff540 »

Barry wrote:Did you remember the tranny bolt that comes in from the engine side and threads into the trans?

Theres really nothing else holding it to the motor that I can think of

Yup,got that one reversed bolt,thanks GM for that one! I have also read it needs to go back in too,or else you risk shearing the flywheel.

I bought a 3100 with tranny,loaded those onto my trailer,and separated the tranny and engine on the trailer,all I did then was remove the rear tranny mount,pass.side,3 torque converter bolts,and the bellhousing bolts,wiggled it a bit,and it cracked like an egg.

Leaving the tranny in car,didn't have any issues,engine knocked after LIM change.pulled timing cover chain does seem loose,maybe that's my KNOCK.car ran,idled perfectly,but sounded like hell.

I'm thinking I should support the tranny with a jack and then maybe try to disconnect them.maybe they are just binding,I do see some white corrosion dust on the tranny itself,so maybe the dowel pins are also corroded.thanks for the reply barry.
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Re: Separating 4T60E from 3100 V6

Post by heavywoody »

By "rear tranny mount", do you mean the bracket that connects the end of the trans (where the diff is) to the back of the block?
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Re: Separating 4T60E from 3100 V6

Post by 3X00-Modified »

Are you supporting the transmission by the pan evenly? If your not, its trying to rock down as your pulling the engine away so it will never separate. The trans is only supported by ONE mount on the drivers side and 70% of the weight is in the tail of the trans so with no support under that your just pinching yourself.

Going by your description of parts removed, you have everything out that holds the two together, as long as you've removed the lower dog bone engine mount as well as the upper passenger side engine mount.

Notice the extra jackstand holding up the trans in this picture.
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Re: Separating 4T60E from 3100 V6

Post by jeff540 »

heavywoody wrote:By "rear tranny mount", do you mean the bracket that connects the end of the trans (where the diff is) to the back of the block?
Yes,I am thinking of that as a rear tranny mount,got that one out.thanks
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Re: Separating 4T60E from 3100 V6

Post by 3X00-Modified »

I supported it with two going back in

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Re: Separating 4T60E from 3100 V6

Post by jeff540 »

3X00-Modified wrote:Are you supporting the transmission by the pan evenly? If your not, its trying to rock down as your pulling the engine away so it will never separate. The trans is only supported by ONE mount on the drivers side and 70% of the weight is in the tail of the trans so with no support under that your just pinching yourself.

Going by your description of parts removed, you have everything out that holds the two together, as long as you've removed the lower dog bone engine mount as well as the upper passenger side engine mount.
3X00-Modified,Thanks,I will try supporting the tranny,I believe I am binding on the dowel pins.dogbone is out,upper Pass.side mount removed along with timing cover for more room.Do I need to remove the Driver's side tranny mount,I have left that in,since I am leaving the tranny,Axles,Wheels/Tires ON.just changing 3100. The car:95 beretta Z26.
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Re: Separating 4T60E from 3100 V6

Post by 3X00-Modified »

No leave the drivers side trans mount because that is all that's holding the trans in place... you just need to hold up the passenger side of the trans.

Think of it this way... hold a sledge hammer in your hand horizontally halfway down the handle... it tries to fall down, thats exactly what your trans is doing since there is no support for it on the passenger side so you will never pull it away from the motor... And if you did it would drag the whole way down the flexplate and then drop on the floor like a rock most likely cracking the diff cover and ripping the drivers side mount apart.
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Re: Separating 4T60E from 3100 V6

Post by jeff540 »

3X00-Modified wrote:No leave the drivers side trans mount because that is all that's holding the trans in place... you just need to hold up the passenger side of the trans.

Think of it this way... hold a sledge hammer in your hand horizontally halfway down the handle... it tries to fall down, thats exactly what your trans is doing since there is no support for it on the passenger side so you will never pull it away from the motor... And if you did it would drag the whole way down the flexplate and then drop on the floor like a rock most likely cracking the diff cover and ripping the drivers side mount apart.
Good way of thinking on your part.makes total sense! OK I will leave the Driver's side tranny mount in.and try supporting the tranny and then give it a try.Thanks man,your a great help!
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Re: Separating 4T60E from 3100 V6

Post by 3X00-Modified »

Next time if you can get/borrow all the right tools... I finally did this year and I'll tell you what... a trans jack is a life saver... Even if you are leaving in the trans. I always pull mine, then pull the motor... makes the job easier for me at least.

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Re: Separating 4T60E from 3100 V6

Post by woody90gtz »

I've pulled a engine out from the top twice with the auto trans still installed. Supporting the trans from the bottom is absolutely necessary, it should be cake once you do that.
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Re: Separating 4T60E from 3100 V6

Post by jeff540 »

I just posted a whole paragragh and when i clicked submit it told me to log in so i did,but my whole paragraph is gone,and i was logged in.what gives? I don't even know how to locate my post.don't know where it went.
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