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questions on A518 OD #17666
10/04/05 12:30 PM
10/04/05 12:30 PM
Joined: Dec 2004
Posts: 1,176
Crockett ,TX
9
98RAM1500 Offline OP
super stock
98RAM1500  Offline OP
super stock
9

Joined: Dec 2004
Posts: 1,176
Crockett ,TX
i heard that the A500 & A518 OD Transmissions can't take any abuse at all like shifting it manually ever now a then but not everytime of course all i was wanting to do with one is possibly put a A518 behind a good 318 4bbl with a 3.23 sure grip in my 81 1/2 ton stepside truck. also i was told that there is some kind of bearing that goes out alot in the OD section of the tranny what year trannys do i need to look for and which have the lockup and non lock up converters? any help thanks

Re: questions on A518 OD [Re: 98RAM1500] #17667
10/04/05 05:05 PM
10/04/05 05:05 PM
Joined: Jan 2003
Posts: 2,597
A Happy Place, A Happy Place, ...
57Plymouth Offline
master
57Plymouth  Offline
master

Joined: Jan 2003
Posts: 2,597
A Happy Place, A Happy Place, ...
I blew up an A500 behind a 4bbl 318 with 3.23 open gears in a 1980 truck. I don't trust them.


Virtus Junxit Mors Non Separabit
Re: questions on A518 OD [Re: 98RAM1500] #17668
10/04/05 06:20 PM
10/04/05 06:20 PM
Joined: Sep 2004
Posts: 1,828
houston texas
G
gremlinsteve Offline
top fuel
gremlinsteve  Offline
top fuel
G

Joined: Sep 2004
Posts: 1,828
houston texas
for the cost of the swap i would prefer runnin a gear vendors. just my opinion. i did alot of looking into that a518 swap.

steve


if You Like Gremlinsteve. Gremlinsteve Likes You.
Re: questions on A518 OD [Re: 98RAM1500] #17669
10/04/05 06:48 PM
10/04/05 06:48 PM
Joined: Dec 2003
Posts: 16,844
Phoenix - surface of the sun
nomore65BelvJim Offline
I Live Here
nomore65BelvJim  Offline
I Live Here

Joined: Dec 2003
Posts: 16,844
Phoenix - surface of the sun
a 518 is basicly a 727 with a OD tailshaft. look at the rebuild kits/parts available, many will be for BOTH the 727 AND the 518. There are plenty of HD parts available.
From what I've read/been told the OD unit failures are a poor maintenance or misuse by owner issue. I'm building a 518 46RH (lock-up Tq) to go behind a 450 hp 440 and it will still be cheaper than a gear vendors, including the cost of the new bell housing.

Re: questions on A518 OD [Re: nomore65BelvJim] #17670
10/04/05 07:47 PM
10/04/05 07:47 PM
Joined: Jan 2003
Posts: 6,355
Cambridge Vt.
mark_gates Offline
master
mark_gates  Offline
master

Joined: Jan 2003
Posts: 6,355
Cambridge Vt.

Last edited by mark_gates; 10/07/05 12:23 PM.
Re: questions on A518 OD [Re: mark_gates] #17671
10/04/05 08:14 PM
10/04/05 08:14 PM
Joined: Sep 2004
Posts: 1,913
Brunswick, Jawgia
Snailpower Offline
Infinitely Fast Snail
Snailpower  Offline
Infinitely Fast Snail

Joined: Sep 2004
Posts: 1,913
Brunswick, Jawgia
More mis-information....

Just like everything else in life, you get out of it what you put into it. There is NOTHING wrong with the design of the A-500/A-518 transmissions except the owners who tow with them in OD and don't change the fluid/filter. Aside from a few failures that EVERY type of tranmission ever made suffers from, the 904/727 OD variant transmissions will live behind anything a normal 904/727 will live behind. Build the trans for what you are going to use it for and you will be just fine.

As far as the cost goes, buy a JY trans and build it yourself. Not that hard with a Service Manual and a few folks from this board helping with advice! That will bring the cost in MUCH less than a GV unit. The people who run a 500/518 in a muscle car will tell you what they think. Then make your decision....


70 Coronet- turbocharged 360/518/3.73 SG
Re: questions on A518 OD [Re: Snailpower] #17672
10/07/05 03:51 AM
10/07/05 03:51 AM
Joined: Jan 2003
Posts: 1,965
ID/MT
C
Cheeto Offline
top fuel
Cheeto  Offline
top fuel
C

Joined: Jan 2003
Posts: 1,965
ID/MT
Quote:

Build the trans for what you are going to use it for and you will be just fine.




Quote:

70 Coronet, Turbocharged 360/518 = 0-60 in "Dangit, I broke something"



Sorry, I just couldn't help but see the possible irony of this situation.


Cheeto
It's not perfect.
It's not correct.
It's not yours!
Re: questions on A518 OD [Re: Cheeto] #17673
10/07/05 09:08 AM
10/07/05 09:08 AM
Joined: Sep 2004
Posts: 1,913
Brunswick, Jawgia
Snailpower Offline
Infinitely Fast Snail
Snailpower  Offline
Infinitely Fast Snail

Joined: Sep 2004
Posts: 1,913
Brunswick, Jawgia
NOT the trans..

But dang near everything else....


70 Coronet- turbocharged 360/518/3.73 SG
Re: questions on A518 OD [Re: Snailpower] #17674
10/07/05 09:39 AM
10/07/05 09:39 AM
Joined: Oct 2003
Posts: 11,684
W. Kentucky
justinp61 Offline
I Live Here
justinp61  Offline
I Live Here

Joined: Oct 2003
Posts: 11,684
W. Kentucky
I have a 518 in my 93 Dakota with a Mag 318 and 3.90 gears with the MP computer. It's been shifted manually a bunch, in fact most of the time becaust the 2-3 shift comes very quickly if you leave it in drive. 135000 miles and no problems.

Re: questions on A518 OD [Re: justinp61] #17675
10/07/05 10:50 AM
10/07/05 10:50 AM
Joined: Nov 2004
Posts: 8,094
Sunnyvale, CA
Jeepmon Offline
master
Jeepmon  Offline
master

Joined: Nov 2004
Posts: 8,094
Sunnyvale, CA
518's can be built to handle 1200HP/1200TQ

APS

Re: questions on A518 OD [Re: mark_gates] #17676
10/07/05 10:55 AM
10/07/05 10:55 AM
Joined: Jan 2003
Posts: 28,067
Irving, TX
feets Offline
Senior Management
feets  Offline
Senior Management

Joined: Jan 2003
Posts: 28,067
Irving, TX
Quote:

I've heard the problem is that the groove in one of the clutch pistons is machined too deep, and after a certain amount of age the seal shrinks a bit, looses pressure and burns up the clutches. They've known about this for years, but since the problem usually appears after warranty, they've done nothing to fix it. They took the venerable 727 and screwed it up. Ask practically any 92-02 Dodge truck owner.




Yeah! My piece of crap 518 has only lasted 249,700 miles behind my BOMBed diesel!
Wait... That means it's still going... Where's the problem?

This truck has never made a full tank of fuel without being mashed to the floor. It's done donuts, burnouts, drag racing, loaded over 10,000 lbs without a trailer, hauled over 18,000 lbs with a trailer using OD, been involved in three serious accidents, and has generally had a difficult life.
Not a problem yet.

In fact, I've got a 518 that will be going behind the TT440 this winter.
I have no problems with 'em. They're great trannies.


We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind.
- Stu Harmon






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