Can't get input assembly out!
Thread Starter
Supreme Member

Joined: Feb 2000
Posts: 1,416
Likes: 0
From: Johnstown, Ohio
Car: 84 Z28
Engine: 355 (fastburn heads, LT4 HOT cam)
Transmission: 700R4
Axle/Gears: 9-bolt, 3.27
Can't get input assembly out!
This is actually on a 4L60E, but I understand that it is the same. The input shaft and clutch assembly won't come out! The manual I have says it should come right out (although the book is for a 700, not 4L60E) Is something messed up in there, or something? Is this a common thing?
The trans is coming apart because it lost 3rd and 4th (3-4 clutch pack, man the fluid was dark!)
Thanks in advance!
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Working on:
'84 Z28 LG4 305 with 200,000 original miles!
Added dual elec fans.
145 MPH IROC Speedo
Building 430 HP 350 (ZZ430)
using primarily GMPP parts.
Short block sitting on a stand. (Man, those Fast-Burn heads sitting on it look good!)
Starting to look like the Kicker poster child!
ASE Certified Master Tech
The trans is coming apart because it lost 3rd and 4th (3-4 clutch pack, man the fluid was dark!)
Thanks in advance!
------------------
Working on:
'84 Z28 LG4 305 with 200,000 original miles!
Added dual elec fans.
145 MPH IROC Speedo
Building 430 HP 350 (ZZ430)
using primarily GMPP parts.
Short block sitting on a stand. (Man, those Fast-Burn heads sitting on it look good!)
Starting to look like the Kicker poster child!
ASE Certified Master Tech
Thread Starter
Supreme Member

Joined: Feb 2000
Posts: 1,416
Likes: 0
From: Johnstown, Ohio
Car: 84 Z28
Engine: 355 (fastburn heads, LT4 HOT cam)
Transmission: 700R4
Axle/Gears: 9-bolt, 3.27
Yeah, I have the band and the first drum out, but I can't get the one out that the input shaft connects to. I have now been told that either the planetaries are broken, or the clutches are seized together, so I just need to use some brute force.
Thanks.
Thanks.
Supreme Member
Joined: Jul 1999
Posts: 2,767
Likes: 2
From: Vereinigten Staaten
Car: Take
Engine: Your
Transmission: Pick
Once the band is out of the way, the input housing should lift straight up, even if the "first drum" (reverse input housing) still in there or not. Sounds like something is damaged and either "welded" itself together, or just got stuck.
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------------------
If you live in Southeastern US, check us out!
South East Thirdgen
GM Master Tech
ASE Master Tech + L1
Savannah, GA
'87 Trans Am
S/D TPI retrofit including functional PassKey,
22# injectors,
Whatever chip I feel like burning,
JET AFPR, Ported Plenum,
TB Coolant Bypass, Custom Cold Air,
SSM SFC, KYB Shocks, Boxed LCAs, Wonder Bar,
8mm Accel wires,
Flowmaster Exhaust,
16" GTA rims,
Corvette Servo,
3.73 Posi
4wheel Disc Brakes
'97 Bonneville SSE
Thread Starter
Supreme Member

Joined: Feb 2000
Posts: 1,416
Likes: 0
From: Johnstown, Ohio
Car: 84 Z28
Engine: 355 (fastburn heads, LT4 HOT cam)
Transmission: 700R4
Axle/Gears: 9-bolt, 3.27
Well, I got it out. It was the infamous 3-4 clutch pack that had welded itself together. It took a strategically placed prybar and someone tugging just the right way on the input shaft.
This transmission seems to be pretty simple as far as rebuilding goes. It's MUCH easier than Chrysler's A-604!
I'm now having problems with the 3-4 clutch pack going back together. The kit I got has the thicker steels, but not the revised retainer plate (I forget exactly what it's called, but the plate that goes on last under the snap ring)
Thanks for replying!
This transmission seems to be pretty simple as far as rebuilding goes. It's MUCH easier than Chrysler's A-604!
I'm now having problems with the 3-4 clutch pack going back together. The kit I got has the thicker steels, but not the revised retainer plate (I forget exactly what it's called, but the plate that goes on last under the snap ring)
Thanks for replying!
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