GRINCH Noise
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Logistics Pro
Joined: Oct 2002
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From: Valley Center, CA
GRINCH Noise
My buddy just installed a 302 and a C-4 in his 65. The engine was just rebuilt and so was the tranny. A brand new torque converter was installed. I got there late, so I did not see the actual install. Just before they started the engine, they added 5 qt of atf to the tranny. I do not know if they poured any atf into the torque converter before they put it into the tranny.
When they started the engine there was a loud grinding noise. And the tranny was very difficult to get into gear. It sounded like putting a standard into gear when the clutch won't disengage all the way. GGRRRRRRRG
If they did not put atf into the torque converter before installing it, would it cause this problem? Do you think the torque converter is ruined? Should they remove the transmission and put atf into the torque converter now?
Jag
When they started the engine there was a loud grinding noise. And the tranny was very difficult to get into gear. It sounded like putting a standard into gear when the clutch won't disengage all the way. GGRRRRRRRG
If they did not put atf into the torque converter before installing it, would it cause this problem? Do you think the torque converter is ruined? Should they remove the transmission and put atf into the torque converter now?
Jag
Senior User
Joined: Dec 2007
Posts: 335
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From: Centennial, CO
When they put the torque converter on the tranny did they make sure it went into the second notch? After you start it on the front shaft it needs to be turned and slide in about another inch maybe to completely lock in.
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Logistics Pro
Joined: Oct 2002
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From: Valley Center, CA
I did not get to watch them on the install of the TC. They do know to keep rotating until they get the second chunk, but I can't verify that they did it. The drive shaft is installed, but it won't turn the wheels. (They have jackstands on all four corners) Jag
Cargo Master
Joined: Feb 2008
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From: Windermere Valley,B.C. Ca
I would lean (crash!…whoops leaned too far) towards the TQ not being into the front pump dogs rather then the fluid, the TQ will fill quickly from the front pump and even if you pre-filled the TQ (I never have) you can only fill it half full anyway.
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From: Littleton, New Hampshire
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Elder User
Joined: May 2004
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From: saxton pa.
Noises
It sounds like you have the wrong torque converter ! It depends on which input shaft is in the tranny -- which converter you use , difference in size and spline counts. Sounds like somebody trying to put a stick in gear without the clutch. Swap converters and you should be OK.
I Hope This Helps ---- Hotwrench
I Hope This Helps ---- Hotwrench
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Laughing Gas
Joined: Jan 2008
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From: Alabama
Something here has me confused, I have a C6 behind a 351W and was told to push, rotate the TC till I felt the second clunk so that I would know it was mated up with the pump, which I did. That gave me 1 inch from the edge of the bell housing to the stud boss on the TC. But then once I mated the Transmission to the engine I had to pull the TC back out maybe half an inch to bolt it to the flex plate. Looks like this would disengage the TC from the pump. BTW I have always been taught to fill the TC with a couple of Qts. of fluid before install but the shop that rebuilt mine said you didn't have to. Hey I know this is routine but he did bolt the TC to the flex plate didn't he?
Lead Driver
Joined: Apr 2002
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From: Littleton, New Hampshire
Darksider
Joined: May 2003
Posts: 1,425
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From: Burlington, CT
I just went through this a few months ago damn bearing!!!!! turned out ok just had to pull the motor and yank the bearing. We never got anyfarther than that so we never tried to start the motor! Hope all works out well.
Hotshot
Joined: Oct 2009
Posts: 16,153
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From: Burbank, WA
Something here has me confused, I have a C6 behind a 351W and was told to push, rotate the TC till I felt the second clunk so that I would know it was mated up with the pump, which I did. That gave me 1 inch from the edge of the bell housing to the stud boss on the TC. But then once I mated the Transmission to the engine I had to pull the TC back out maybe half an inch to bolt it to the flex plate. Looks like this would disengage the TC from the pump.
Elder User
Joined: May 2004
Posts: 565
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From: saxton pa.
Torque Converters
Just for the record there are 2 different torque converters for a C4---- Early 66-69 24 spline later 70 up 26 spline. Late converter will will install into early style trans --- makes a grinding noise and won't drive vehicle.
24 Spline converters won't fit into 70 up trannys.
Have A Good Day-------Hotwrench
24 Spline converters won't fit into 70 up trannys.
Have A Good Day-------Hotwrench
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Logistics Pro
Joined: Oct 2002
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From: Valley Center, CA
Hotwrench is the winner. I passed on all the ideas mentioned and when they checked the TC it was a 26 spline. They got the correct TC and the tranny works right!! Thanks for all the input. Another happy ending for FTE. Jag
Jag