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#2522904 - 07/16/18 10:15 PM transmission pan cast aluminum vs stamped steel
mopar12345 Offline
member

Registered: 12/08/08
Posts: 123
Loc: montreal,quebec
Hi all,
So it looks like i'll have to remove the transmission from my car sometime soon as now 2 of the 4 torque converter bolts have stripped so a new torque converter is on the list. Most likely a tight 4200-4800 converter from what i have spoken to converter builders.
Added to that is a stubborn transmission leak and adding a better cooler and PTFE lines to and from transmission.
Looking for opinions on the following questions
How much extra capacity should i be looking for?
Should i just buy a stamped steel pan with extra capacity or buy an expensive cast aluminum pan?


Edited by mopar12345 (07/16/18 10:18 PM)

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#2522910 - 07/16/18 10:33 PM Re: transmission pan cast aluminum vs stamped steel [Re: mopar12345]
AndyF Offline
Too Many Posts

Registered: 01/20/03
Posts: 24347
Loc: Oregon
I'd think the deep stamped steel pans should be fine for most applications. The cast pans are good if you do a lot of tranny work since they'll stand up to some more abuse. You can wrestle the tranny around on the pan without denting it all up and stuff like that.

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#2522915 - 07/16/18 10:45 PM Re: transmission pan cast aluminum vs stamped steel [Re: mopar12345]
justinp61 Online   content
master

Registered: 10/01/03
Posts: 9588
Loc: W. Kentucky
I ran a factory pan for a 518 for several years with no issues. Did have to go to a very deep aluminum pan when I went to a trans brake valve body.

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#2522924 - 07/16/18 11:17 PM Re: transmission pan cast aluminum vs stamped steel [Re: mopar12345]
dart440_72 Offline
enthusiast

Registered: 03/01/04
Posts: 282
Loc: Medina, OH
I've got one from these guys and love it. Thick rails and seals really well
https://www.lpwracing.com/Trans_Pans/Deep_Transmission_Pans.html
_________________________
72 Dart 500" low deck Indy SR heads. 10.40 @129 best so far

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#2522938 - 07/17/18 12:05 AM Re: transmission pan cast aluminum vs stamped steel [Re: mopar12345]
Dave Hall Offline
top fuel

Registered: 01/21/08
Posts: 1952
Loc: Cotati, CA
LPW is awesome! up I am putting one of their pans on my Dart trans. tonight. Changed fluid and filter of course. Also changing from conventional to the good stuff in the engine. Trans. gets NAPA type F.


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#2523007 - 07/17/18 09:18 AM Re: transmission pan cast aluminum vs stamped steel [Re: mopar12345]
J_BODY Offline
I Live Here

Registered: 04/30/03
Posts: 11522
Loc: aZLiViN
I use factory trans pans off the older 42 and 46-48 RE transmissions (904 and 727 style). That and a lowering block for the filter has served me well for years. Also ALWAYS use the factory reusable gasket torqued to 125”lb. I prefer the steel pan as those cast aluminum pieces are heavy and seem to retain heat.

Morose makes a nice light aluminum trans pan too (not cast)

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#2523015 - 07/17/18 09:41 AM Re: transmission pan cast aluminum vs stamped steel [Re: mopar12345]
DusterKid Offline
super stock

Registered: 01/02/05
Posts: 840
Loc: Keymar, MD
I have used 440 source deep steel pan with the filter adapter for years without any issues. With that said, I'd eventually like to get a cast aluminum pan just from the stand point I don't have a car lift. I use the jack under the trans for removal/install and have to be careful not to dent the bottom of the pan.

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#2523037 - 07/17/18 11:02 AM Re: transmission pan cast aluminum vs stamped steel [Re: mopar12345]
Sammy Offline
super stock

Registered: 12/31/12
Posts: 833
Loc: Wind Gap,Pa.
I'll be looking at that LPW pan as well.
My B & M aluminum pan leaks right in the front to LH side, no matter what I do.
Only way to seal it up with no leaks is RTV on both sides including the bolts.

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#2523064 - 07/17/18 12:22 PM Re: transmission pan cast aluminum vs stamped steel [Re: mopar12345]
MarkM Offline
Worthy

Registered: 01/13/05
Posts: 2225
Loc: USA, MI
I'm using a MP deep cast pan I bought from JohnRR years ago. Not having to worry about putting creases in the rail and the drain plug alone made it worth it.
_________________________
'87 Fifth Avenue: 512 low deck roller / 518 / 8.75


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#2523072 - 07/17/18 12:36 PM Re: transmission pan cast aluminum vs stamped steel [Re: mopar12345]
Dave Hall Offline
top fuel

Registered: 01/21/08
Posts: 1952
Loc: Cotati, CA
The ATS Diesel cast aluminum pan on my dually is heavy! The 727/904 stuff isn't so heavy and the LPW has cast in bosses for temp. gauge senders or whatever. They include a billet, o-ringed block for lowering the filter. The cast pans seal way better using the factory reusable gasket. They also have plugs to drain them where the factory stamped stuff doesn't.

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#2523095 - 07/17/18 01:16 PM Re: transmission pan cast aluminum vs stamped steel [Re: mopar12345]
an8sec70cuda Online   content
I Live Here

Registered: 01/19/03
Posts: 10726
Loc: Marion, South Carolina [><]
The cast aluminum pans seem to seal up better than the steel ones.
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CHIP
'70 hemicuda...8.91 at 150.5 mph street car...Mopar Action feature Dec. '14
'69 road runner 446" w/ Indy SRs
'69 road runner 440-6, 4 speed...Dad's ride
'71 Demon 340 resto project
'01 Ram 2500 QCSB 4x4 Cummins...toy hauler
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#2523135 - 07/17/18 02:13 PM Re: transmission pan cast aluminum vs stamped steel [Re: an8sec70cuda]
MR_P_BODY Offline
Master

Registered: 06/13/03
Posts: 50774
Loc: Romeo MI
I use a cast 518 pan.. also you might want talk
to Lenny(Ultimate trans).. he cut the lugs off
my last conv and put on new ones.. he also
changed the stall.. it was much cheaper than
buying a new conv
wave
_________________________

W-9 8.94 @ 151 NOW ON E-85
Mike "Raff"...(180)Watching over us
CAR IS FOR SALE

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#2523296 - 07/17/18 08:28 PM Re: transmission pan cast aluminum vs stamped steel [Re: MR_P_BODY]
dartman366 Offline


Registered: 01/18/04
Posts: 13137
Loc: Mt. Vernon, Ohio
after using cast pans I refuse to go back to a stamped steel pan for several reasons, 1- no more leake's 2- stiffens the case and acts like a girdle and,,, no more leaks, usually comes with a drain plug and the better ones come with a port for a temp gauge
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Light travels faster than the speed of sound,,,this is why some people seem bright untill you hear them speak.

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#2523437 - 07/18/18 02:16 AM Re: transmission pan cast aluminum vs stamped steel [Re: mopar12345]
Cab_Burge Offline
I Win

Registered: 08/23/03
Posts: 31044
Loc: Bend,OR USA
One thing to keep in mind when making your decision on this is a rock kicked up against the cast saluminum could break it and make it shatter like temper glass, not good during a run s it work
A steel pan may dent and even have a hole poked into it but it won't dump near as much tranny fluid under the car as a cast shatter pan will shruggy Did I mention I hate "Murphy" runaway whiney
I've ran both, no problems with either type, yet shruggy


Edited by Cab_Burge (07/18/18 02:17 AM)
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Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)

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#2523603 - 07/18/18 12:35 PM Re: transmission pan cast aluminum vs stamped steel [Re: Cab_Burge]
John_Kunkel Offline
I Live Here

Registered: 01/20/03
Posts: 19451
Loc: Rio Linda, CA
I don't have a sacrificial cast pan to test your "shatter" theory but I'll bet the cast pan is a little more robust than you think.
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I'm supposed to respect my elders, but its getting harder and harder for me to find one now.

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#2523607 - 07/18/18 12:41 PM Re: transmission pan cast aluminum vs stamped steel [Re: mopar12345]
70b1dart Online   content
enthusiast

Registered: 01/31/11
Posts: 296
Loc: st.louis,mo.
aluminum will despress heat than steel

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#2523626 - 07/18/18 01:22 PM Re: transmission pan cast aluminum vs stamped steel [Re: mopar12345]
mopar12345 Offline
member

Registered: 12/08/08
Posts: 123
Loc: montreal,quebec
So it seems like the majority go with a cast pan. I just want something that I put on and not have to worry about it breaking or leaking.
Another question I have for you all is should I bypass the radiator transmission cooler and go straight to the external cooler or should I plumb both coolers together?
Right now it is bypassed but I’m thinking if I go with a 1qt extra capacity with both coolers connected would come close to having a 2qt and direct to the external transmission cooler

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#2523630 - 07/18/18 01:36 PM Re: transmission pan cast aluminum vs stamped steel [Re: mopar12345]
MR_P_BODY Offline
Master

Registered: 06/13/03
Posts: 50774
Loc: Romeo MI
Run both
wave
_________________________

W-9 8.94 @ 151 NOW ON E-85
Mike "Raff"...(180)Watching over us
CAR IS FOR SALE

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#2523787 - 07/18/18 06:48 PM Re: transmission pan cast aluminum vs stamped steel [Re: MR_P_BODY]
Cab_Burge Offline
I Win

Registered: 08/23/03
Posts: 31044
Loc: Bend,OR USA
Originally Posted By MR_P_BODY
Run both
wave
iagree up
_________________________
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)

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#2523788 - 07/18/18 06:49 PM Re: transmission pan cast aluminum vs stamped steel [Re: John_Kunkel]
Cab_Burge Offline
I Win

Registered: 08/23/03
Posts: 31044
Loc: Bend,OR USA
Originally Posted By John_Kunkel
I don't have a sacrificial cast pan to test your "shatter" theory but I'll bet the cast pan is a little more robust than you think.

Have you seen a cast piston shatter? I have down
_________________________
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)

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