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overfilled? #626594 02/28/10 10:38 AM 02/28/10 10:38 AM
Joined: Aug 2005 Posts: 761 KY J juicedcuda OP super stock
juicedcuda OP super stock J Joined: Aug 2005 Posts: 761 KY	What can happen when the transmission is over filled? TF-727. 1970 Plymouth 'Cuda 1970 Plum Crazy "Gold Duster" 1973 Gold Duster

Re: overfilled? [Re: juicedcuda] #626595 02/28/10 10:41 AM 02/28/10 10:41 AM
Joined: Jan 2003 Posts: 32,394 Q Quicktree I Win
Quicktree I Win Q Joined: Jan 2003 Posts: 32,394	it will leak

Re: overfilled? [Re: juicedcuda] #626596 02/28/10 10:57 AM 02/28/10 10:57 AM
Joined: Nov 2003 Posts: 7,348 Mt.Vernon ,Ohio VernMotor master
VernMotor master Joined: Nov 2003 Posts: 7,348 Mt.Vernon ,Ohio	It will push it out the vent.

Re: overfilled? [Re: juicedcuda] #626597 02/28/10 11:13 AM 02/28/10 11:13 AM
Joined: Jan 2003 Posts: 16,925 NC 440Jim I Live Here
440Jim I Live Here Joined: Jan 2003 Posts: 16,925 NC	My thoughts: Excessive windage in the rotating parts, which could aerate the fluid. The normal fill is about the bottom of the valve body, so it doesn't take much higher to reach the rotating parts. And aerated fluid could be bad news. 1993 Daytona, 5.50 at 130mph (1/8) 1.19 sixty ft (PG). Link to 572 B1 - Part 1

Re: overfilled? [Re: 440Jim] #626598 02/28/10 02:58 PM 02/28/10 02:58 PM
Joined: Aug 2003 Posts: 43,161 Bend,OR USA C Cab_Burge I Win
Cab_Burge I Win C Joined: Aug 2003 Posts: 43,161 Bend,OR USA	Quote: My thoughts: Excessive windage in the rotating parts, which could aerate the fluid. The normal fill is about the bottom of the valve body, so it doesn't take much higher to reach the rotating parts. And aerated fluid could be bad news. One quart of over fill can kill most automatic trans in less tha a 100 mile trip at 60+ MPH way better to be one pint low than one cup overfilled Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)

Re: overfilled? [Re: Cab_Burge] #626599 02/28/10 03:41 PM 02/28/10 03:41 PM
A Anonymous Unregistered
Anonymous Unregistered A	my 63 plymouth is very sensitive to overfill, it seems to dump and dump out the front pump vent if it gets 1/2 quart overfilled. as soon as it gets hot it doesnt stop puking out.

Re: overfilled? [Re: Cab_Burge] #626600 02/28/10 05:15 PM 02/28/10 05:15 PM
Joined: Jan 2003 Posts: 4,616 Kissimmee Fl. D dusturbd340W5 master
dusturbd340W5 master D Joined: Jan 2003 Posts: 4,616 Kissimmee Fl.	Quote: Quote: My thoughts: Excessive windage in the rotating parts, which could aerate the fluid. The normal fill is about the bottom of the valve body, so it doesn't take much higher to reach the rotating parts. And aerated fluid could be bad news. One quart of over fill can kill most automatic trans in less tha a 100 mile trip at 60+ MPH way better to be one pint low than one cup overfilled sorry I have been in the trans buisness 25 Plus years and I call BS on this one a quart overfilled will do nothing to a unit but maybe a little leak will not damage the unit in any way I have driven my personal cars overfilled for over a 100k with 0 problems. There are a number of units the ATSG wants you to overfill. 70 duster full chassis super pro 416 CNC Indybrock heads 727 w/brake best so far 1.212 60 6.219 in 1/8 at 110.88 9.768 at 137.81 1/4

Re: overfilled? #626601 02/28/10 05:17 PM 02/28/10 05:17 PM
Joined: Jan 2003 Posts: 32,394 Q Quicktree I Win
Quicktree I Win Q Joined: Jan 2003 Posts: 32,394	Quote: my 63 plymouth is very sensitive to overfill, it seems to dump and dump out the front pump vent if it gets 1/2 quart overfilled. as soon as it gets hot it doesnt stop puking out. you shouldn't have a front pump vent

Re: overfilled? [Re: dusturbd340W5] #626602 02/28/10 05:23 PM 02/28/10 05:23 PM
Joined: May 2005 Posts: 6,446 NJ-USA H HPMike master
HPMike master H Joined: May 2005 Posts: 6,446 NJ-USA	Quote: Quote: Quote: My thoughts: Excessive windage in the rotating parts, which could aerate the fluid. The normal fill is about the bottom of the valve body, so it doesn't take much higher to reach the rotating parts. And aerated fluid could be bad news. One quart of over fill can kill most automatic trans in less tha a 100 mile trip at 60+ MPH way better to be one pint low than one cup overfilled sorry I have been in the trans buisness 25 Plus years and I call BS on this one a quart overfilled will do nothing to a unit but maybe a little leak will not damage the unit in any way I have driven my personal cars overfilled for over a 100k with 0 problems. There are a number of units the ATSG wants you to overfill. From another trans guy, I agree. Yes, you wouldn't want any more than you need, but the worst that will usually happen, is that the unit will vent. While it doesn't necessarily apply to this thread, many of the FWD production vehicles actually operated better with a quart overfill. The old GM 440T4(before they became 4T60's) and AXOD's were some of the units that worked better and lasted longer when overfilled. MB

Re: overfilled? [Re: HPMike] #626603 02/28/10 05:35 PM 02/28/10 05:35 PM
Joined: Jan 2003 Posts: 4,616 Kissimmee Fl. D dusturbd340W5 master
dusturbd340W5 master D Joined: Jan 2003 Posts: 4,616 Kissimmee Fl.	Quote: Quote: Quote: Quote: My thoughts: Excessive windage in the rotating parts, which could aerate the fluid. The normal fill is about the bottom of the valve body, so it doesn't take much higher to reach the rotating parts. And aerated fluid could be bad news. One quart of over fill can kill most automatic trans in less tha a 100 mile trip at 60+ MPH way better to be one pint low than one cup overfilled sorry I have been in the trans buisness 25 Plus years and I call BS on this one a quart overfilled will do nothing to a unit but maybe a little leak will not damage the unit in any way I have driven my personal cars overfilled for over a 100k with 0 problems. There are a number of units the ATSG wants you to overfill. From another trans guy, I agree. Yes, you wouldn't want any more than you need, but the worst that will usually happen, is that the unit will vent. While it doesn't necessarily apply to this thread, many of the FWD production vehicles actually operated better with a quart overfill. The old GM 440T4(before they became 4T60's) and AXOD's were some of the units that worked better and lasted longer when overfilled. MB thats correct those are some of the units ATSG wanted overfilled along with units like the E40D 70 duster full chassis super pro 416 CNC Indybrock heads 727 w/brake best so far 1.212 60 6.219 in 1/8 at 110.88 9.768 at 137.81 1/4

Re: overfilled? [Re: Quicktree] #626604 02/28/10 06:19 PM 02/28/10 06:19 PM
A Anonymous Unregistered
Anonymous Unregistered A	Quote: Quote: my 63 plymouth is very sensitive to overfill, it seems to dump and dump out the front pump vent if it gets 1/2 quart overfilled. as soon as it gets hot it doesnt stop puking out. you shouldn't have a front pump vent it was on my list of to do's but forgot to change it over to the rear style vent. only happens on my 63 but it will get changed when the tranny comes back out for a freshen up and a new billet steel drum.

Re: overfilled? [Re: dusturbd340W5] #626605 02/28/10 08:30 PM 02/28/10 08:30 PM
Joined: Jan 2003 Posts: 16,925 NC 440Jim I Live Here
440Jim I Live Here Joined: Jan 2003 Posts: 16,925 NC	Quote: sorry I have been in the trans buisness 25 Plus years and I call BS on this one a quart overfilled will do nothing to a unit... Help me understand. If overfilling will do nothing, why do people's trans vent out the TOP when they do it, and that is about 5 gallons higher then the fluid level? Just trying to understand. And this post is about a TF-727, so leave the irrelavant stuff out. You are a professional, no? As you can see, in a TF727, the front drum is very close to the recommended fluid level (near the case/pan line). 5836645-727new_panoff2_640.jpg (86 downloads)

Re: overfilled? [Re: 440Jim] #626606 02/28/10 09:08 PM 02/28/10 09:08 PM
Joined: Sep 2006 Posts: 1,442 central ohio N nss guy pro stock
nss guy pro stock N Joined: Sep 2006 Posts: 1,442 central ohio	Speaking of over filling, remind me or us how many quarts to fill when changing the filter with the mopar deep steel pan on a 727? I just dropped the pan and changed the filter, how many quarts do I use? The reason for the question is I changed to a locking dipstick and not sure if the marks will be correct. thanks, Jim

Re: overfilled? [Re: nss guy] #626607 02/28/10 09:11 PM 02/28/10 09:11 PM
A Anonymous Unregistered
Anonymous Unregistered A	Quote: Speaking of over filling, remind me or us how many quarts to fill when changing the filter with the mopar deep steel pan on a 727? I just dropped the pan and changed the filter, how many quarts do I use? The reason for the question is I changed to a locking dipstick and not sure if the marks will be correct. thanks, Jim jim it all depends on the size of your converter. 8" converter is around 6.5 quarts with a deep pan.

Re: overfilled? [Re: 440Jim] #626608 02/28/10 09:14 PM 02/28/10 09:14 PM
Joined: Jan 2003 Posts: 4,616 Kissimmee Fl. D dusturbd340W5 master
dusturbd340W5 master D Joined: Jan 2003 Posts: 4,616 Kissimmee Fl.	Quote: Quote: sorry I have been in the trans buisness 25 Plus years and I call BS on this one a quart overfilled will do nothing to a unit... Help me understand. If overfilling will do nothing, why do people's trans vent out the TOP when they do it, and that is about 5 gallons higher then the fluid level? Just trying to understand. And this post is about a TF-727, so leave the irrelavant stuff out. You are a professional, no? As you can see, in a TF727, the front drum is very close to the recommended fluid level (near the case/pan line). if you overfill it enough it will vent but 1 quart isn't that much normally to get a 727 to vent it will have to be more than 1 quart. 70 duster full chassis super pro 416 CNC Indybrock heads 727 w/brake best so far 1.212 60 6.219 in 1/8 at 110.88 9.768 at 137.81 1/4

Re: overfilled? #626609 02/28/10 09:30 PM 02/28/10 09:30 PM
Joined: Sep 2006 Posts: 1,442 central ohio N nss guy pro stock
nss guy pro stock N Joined: Sep 2006 Posts: 1,442 central ohio	Quote: Quote: Speaking of over filling, remind me or us how many quarts to fill when changing the filter with the mopar deep steel pan on a 727? I just dropped the pan and changed the filter, how many quarts do I use? The reason for the question is I changed to a locking dipstick and not sure if the marks will be correct. thanks, Jim jim it all depends on the size of your converter. 8" converter is around 6.5 quarts with a deep pan. 8" ATI converter

Re: overfilled? [Re: 440Jim] #626610 02/28/10 09:48 PM 02/28/10 09:48 PM
Joined: May 2005 Posts: 6,446 NJ-USA H HPMike master
HPMike master H Joined: May 2005 Posts: 6,446 NJ-USA	I don't think anyone would argue that you should fill to the proper level and have no more fluid than you absolutely need. Let's face it, in a drag race environment, most want the least amount of fluids to properly get the job done. Even if you didn't cause any damage to the unit, you certainly don't want to be venting ATF all over the track. But as far as any catastrophic damage from being one quart overfull? I have never seen it. Burn the unit up in 100 miles? I never seen it. My .02, but then again, what do I know? MB

Re: overfilled? [Re: HPMike] #626611 03/01/10 01:41 AM 03/01/10 01:41 AM
Joined: Aug 2003 Posts: 43,161 Bend,OR USA C Cab_Burge I Win
Cab_Burge I Win C Joined: Aug 2003 Posts: 43,161 Bend,OR USA	Mike, I lived in the Mojave desert at the top of the Cajon pas, I knew most of the better tranny shop owners in that area thru racing. They told me on more than one occasion that most of thier business, especially in the summer, was from over filled trans missions and lack of changing the fluids. I have seen cars catch on fire coming up the Cajon pass ue to the trans. being overheated and venting fluid onto the exhaust system these where usually people on thier way to Las Vegas doing 70 to 80 MPH uphill with the air conditioning on in the middle of the afternoon and not looking in there rear view mirrors Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)

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