Transmissions and Drivetrain Need help with your trans? Problems with your axle?

700R4 removal for probuild quick question

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Old 04-27-2010, 12:42 AM
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700R4 removal for probuild quick question

Hey guys i posted some other threads on here about my nice blown up trans recently haha, im getting it pro built. my bud came over tonight and for the last 8 hours we been taking it out (3 of those hours were focused on the top 2 bolts, pain in the ***!) but anyways right now were ready to pull it out.

So does it just drop down? or do we have to pull it back and drop it. we tried wiggling it around and it wont crack loose from the motor, everything is disconnected and all that. a quick reply would be awesome cause were going to continue this tomorrow.
Old 04-27-2010, 12:59 AM
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Car: Trailblazer EXT 4.2 (Firebird Form)
Engine: 5.1 4bbl
Transmission: 700R4 Mega Raptor Level 4
Axle/Gears: 2.73
Re: 700R4 removal for probuild quick question

Originally Posted by MParks
Hey guys i posted some other threads on here about my nice blown up trans recently haha, im getting it pro built. my bud came over tonight and for the last 8 hours we been taking it out (3 of those hours were focused on the top 2 bolts, pain in the ***!) but anyways right now were ready to pull it out.

So does it just drop down? or do we have to pull it back and drop it. we tried wiggling it around and it wont crack loose from the motor, everything is disconnected and all that. a quick reply would be awesome cause were going to continue this tomorrow.
pull back toward the back, I believe there are two guide pins that are part of the engine ...
Old 04-27-2010, 01:10 PM
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Re: 700R4 removal for probuild quick question

Originally Posted by KNBlazer
pull back toward the back, I believe there are two guide pins that are part of the engine ...
I think there are actually 4.

But you need to pull back because the torque converter needs to slip out of the transmission.

Also for when you put the tranny back on, Try jacking up the back of the tranny when the 4 bottom bolts are bolted into the motor. That will tilt the motor towards the front exposing those top bolts a LOT better.
Old 04-27-2010, 01:50 PM
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Re: 700R4 removal for probuild quick question

It might be really hard to break it loose from the engine if its never been apart before. I ended up taking a really thin screwdriver and using it like a chisel on the seam between the transmission and engine on each side to get them to separate, the dowel pins were seized up in the holes. Once it broke loose maybe 1/8 of an inch it was really easy to slide it off the rest of the way. I must've yanked, shook, pulled, and swore at that transmission for half a day before I resorted to the hammer and screwdriver!
Old 04-27-2010, 02:47 PM
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Car: 88 IROC
Engine: 97 5.7 Vortec LT4 hotcam
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Re: 700R4 removal for probuild quick question

Did you unbolt the torque converter from the flywheel? Makes it a ton easier to drop it with the trans.

And there are only 2 dowels In the block.
Old 04-27-2010, 06:53 PM
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Re: 700R4 removal for probuild quick question

Sure did! now that you mention it we DID forget to undo the flywheel to torque converter bolts last night and we were under the car trying to figure out why the trans wasn't just sliding out. this is the first time i ever pulled a transmission and it was not hard at all. once we undid the three bolts it took some wiggling and some cursing and swearing and it slid right out, but it was really hard to pry away from the motor. That technique (leaving the side bolts and jacking the trans to get to the top bolts) would have made a WORLD of difference! i nearly killed my hand trying to get the passenger side one. we took off the dist cap to free up some room. hope that doesn't mess up my timing?
Old 04-28-2010, 06:54 AM
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Re: 700R4 removal for probuild quick question

glad you got it.

Another good trick to get to the top bolts is... put floor jack under trans pan, unbolt the trans crossmember and then let the jack down some. That angles everything back alittle. I then take a long extension or two that I have, use a 9/16 swivel socket and my trusty 3/8 drive ratchet. Works pretty good at times. Especially on the 4th generation cars. But like mentioned earlier, I usually take the top two out from the top of my 88 using a very handy flex head ratchet wrench. Those things are awesome.
Old 04-28-2010, 10:55 PM
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Re: 700R4 removal for probuild quick question

Always pull the transmission and torque converter together, and put it back the same way.
Old 04-29-2010, 07:18 PM
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Re: 700R4 removal for probuild quick question

should be interesting putting it back in, i heard its harder? sometimes i have trouble remembering what bolts go to what so this time i tried to keep what goes with what. those ratchet wrenches look so handy, they would be better for the job than a normal wrench i might buy one for putting the trans back in. i was at canadian tire and saw a set but it goes for 80 bucks! some were a bit less but i dont like to cheap out when it comes to tools
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