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#2448156 - 02/07/18 04:32 PM A518 trans
tuff440 Offline
member

Registered: 06/05/06
Posts: 100
Loc: Sydney, Australia
Where is the best place to have a A518 trans supplied and built. No one in Australia has one.

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#2448193 - 02/07/18 06:02 PM Re: A518 trans [Re: tuff440]
Handygun Offline
enthusiast

Registered: 12/22/09
Posts: 219
Loc: STL ,MO
Pat at A&A did mine, couldn't be better.

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#2448209 - 02/07/18 06:26 PM Re: A518 trans [Re: tuff440]
tuff440 Offline
member

Registered: 06/05/06
Posts: 100
Loc: Sydney, Australia
Thanks, I will give them a call.

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#2448218 - 02/07/18 06:53 PM Re: A518 trans [Re: tuff440]
srunge55 Offline
mopar

Registered: 07/15/05
Posts: 487
Loc: St Louis, MO, USA
The a518 is sometimes called a 46RH. You might search for that also.

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#2448241 - 02/07/18 07:43 PM Re: A518 trans [Re: Handygun]
DaveRS23 Offline
master

Registered: 01/20/03
Posts: 4678
Loc: Benton, IL.
Another vote for A&A. up
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#2448284 - 02/07/18 09:44 PM Re: A518 trans [Re: tuff440]
tuff440 Offline
member

Registered: 06/05/06
Posts: 100
Loc: Sydney, Australia
I did not know that 46RH was another name for the 518. Thanks for that.

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#2448287 - 02/07/18 09:48 PM Re: A518 trans [Re: DaveRS23]
CRT Offline
master

Registered: 01/20/03
Posts: 2688
Loc: Cedar Lake IN
I make a trans brake & reverse manual valve body for the 518.
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Cope Racing Transmissions

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#2448327 - 02/07/18 11:36 PM Re: A518 trans [Re: tuff440]
ChrgrCuda Offline
super stock

Registered: 08/24/08
Posts: 780
Loc: Texas, USA
What type of car and what engine combination is this A518 in? I'm at a crossroads trying to figure out what O/D to go with for my 69 Charger. Tired of 3000 RPM's at 60 mph. I've been looking hard at GV, however if the A518 will fit behind a 440/515 stroker in the 625 - 675 horsepower range I'm interested.
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#2448328 - 02/07/18 11:37 PM Re: A518 trans [Re: tuff440]
ChrgrCuda Offline
super stock

Registered: 08/24/08
Posts: 780
Loc: Texas, USA
*512 stroker. Sorry I fat fingered the keyboard.
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#2448335 - 02/08/18 12:21 AM Re: A518 trans [Re: tuff440]
Transman Offline
super stock

Registered: 03/27/11
Posts: 770
Loc: Michigan
Cars never received any of the overdrive, just truck.

All overdrives used the small block bellhousings except the diesel and they had a unique bellhousing which only fit the diesel and V-10. Some people continue to say they are a big block bell but that is incorrect. The diesel and V-10 received 12-3/4" converters and had a radiuesd shaped cutout at the bottom of the bell.

To fit a big block you need an adapter or have someone transplant a big block bell to your trans.

Overdrives based on the light duty 904/998/999 are called A500.
Overdrives based on the 727 are called either A518/618.

All the overdrives units look very similar to each other but those used behind diesels received a different spline angle for a few model years (so be careful mixing parts up) and some used single sided overdrive clutch discs (we eventually went back to dual sided).

Each family was first released as non-lockup then eventually made in to lockup.

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#2448338 - 02/08/18 12:25 AM Re: A518 trans [Re: tuff440]
70AARcuda Offline
master

Registered: 01/20/03
Posts: 9681
Loc: las vegas
Overdrives based on the 727 are called RH46 and RE46

Rh is hydraulic governor...RE is Electronic governor that is shifted by the PCM...

Overdrives based on the 904 are RH43 with the H being Hydraulic controlled governor.
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Tony

70 AARCuda Vitamin C
71 Dart Swinger 360 10.318 @ 128.22(10-04-14 Bakersfield)
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71 Duster 360 (10.641 @ 124.17 9/16/16 Bakersfield)

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#2448343 - 02/08/18 12:54 AM Re: A518 trans [Re: tuff440]
ChrgrCuda Offline
super stock

Registered: 08/24/08
Posts: 780
Loc: Texas, USA
Sounds like I need to stick with the Gear Vendors direction to eliminate all of the complexity. Thanks for the info.
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68 Cuda Notchback [Email]10.86@120[/Email] 69 Charger R/T 440/505 2009 Challenger SRT8

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#2448362 - 02/08/18 02:29 AM Re: A518 trans [Re: ChrgrCuda]
Jamie McGrath Offline
member

Registered: 01/20/13
Posts: 124
Loc: Oregon
Originally Posted By ChrgrCuda
Sounds like I need to stick with the Gear Vendors direction to eliminate all of the complexity. Thanks for the info.




Or put a third peddle and a 5spd in it.

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#2448393 - 02/08/18 08:05 AM Re: A518 trans [Re: 70AARcuda]
Transman Offline
super stock

Registered: 03/27/11
Posts: 770
Loc: Michigan
Originally Posted By 70AARcuda
Overdrives based on the 727 are called RH46 and RE46

Rh is hydraulic governor...RE is Electronic governor that is shifted by the PCM...

Overdrives based on the 904 are RH43 with the H being Hydraulic controlled governor.


We never used the designation RH46 or RE46 - it was 46RE or 46RH. We went to this designation after program launch - at launch they were called 500's, 518's, 618's.

We never ever offered a 43, only 42 or 44.

The PCM doesn't "shift" the trans - it only controls governor pressure on the RE units - the valve body shifts the trans between gears and in to OD.
On the RH it only controls the OD.

Splitting hairs - not really - any of these transmissions will shift manually in to each gear except OD.

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#2448429 - 02/08/18 09:09 AM Re: A518 trans [Re: ChrgrCuda]
DaveRS23 Offline
master

Registered: 01/20/03
Posts: 4678
Loc: Benton, IL.
Two things to keep in mind as you decide which way to go; the Gear Vendors OD ratio is not nearly as good as the 518. .69 vs .78. That is a big deal. And the 518 is available with converter lock-up.

There are calculators that will compute the RPM difference with your particular inputs.

Now, the converter lock-up may not be happy with the full power of the big block, but that really shouldn't be an issue. How often would you want to go to wide open in OD?

The 518 probably is somewhat more complicated to find and assemble for a big block, and nearly as expensive to boot. But the better final drive ratio makes it worth the extra effort in my humble opinion. Check out the calculators and see if would be worth it to you, too.
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#2448618 - 02/08/18 02:53 PM Re: A518 trans [Re: Transman]
tuff440 Offline
member

Registered: 06/05/06
Posts: 100
Loc: Sydney, Australia
I want the four speed for my dually pickup which will be a daily driver and sometimes used for towing. Motor is a stockish 318. Diff is dana 70 which is being rebuilt at the moment with a power lok and 3.54 R&P

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#2448725 - 02/08/18 06:28 PM Re: A518 trans [Re: tuff440]
Transman Offline
super stock

Registered: 03/27/11
Posts: 770
Loc: Michigan
If a stock engine and not towing much weight you may want to consider one of two things.

Use the A500/42-44RH so you get the 2.7 first gear with that 3.54 rear.
Or move up to a 3.7 or 4.1 rear with the A518/46RH.

I have an extended cab 93 diesel with 3.54 rear and 47 w/o lockup - it can haul 9000+ lbs but it labors from a standstill and I have to stay out of overdrive up long grades or get a good running start.

I'm converting the trans to lockup this spring but moving to a 3.7 or 4.1 axle so I can carry more weight and get away from the light a little easier and leave it in overdrive.

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#2448754 - 02/08/18 07:22 PM Re: A518 trans [Re: tuff440]
hudsonhornet7x Offline
super stock

Registered: 01/14/12
Posts: 1061
Loc: Plumer, Pa
Will the A518 trans survive a 700 hp engine in a 68 B body?
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#2448763 - 02/08/18 07:45 PM Re: A518 trans [Re: hudsonhornet7x]
mgoblue9798 Offline
enthusiast

Registered: 03/16/10
Posts: 215
Loc: Atlanta, GA
To the same level that a properly built 727 will- provided you don't hot rod it with OD engaged. Transmissions are really rated on torque output not horsepower anyways.

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#2448766 - 02/08/18 07:47 PM Re: A518 trans [Re: tuff440]
J_BODY Offline
I Live Here

Registered: 04/30/03
Posts: 11522
Loc: aZLiViN
Pro Trans builds and has the adapters to put a 518/46RH behind a big block. Darren is installing one in his Coronet project. They have picts on their Facebook page from Sept 13.

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#2448767 - 02/08/18 07:51 PM Re: A518 trans [Re: Transman]
mgoblue9798 Offline
enthusiast

Registered: 03/16/10
Posts: 215
Loc: Atlanta, GA
So, this is an out there question. If I were to change to intake, carb, and put electronic ignition on an OBD2 magnum, would the transmission shift shift manually through 1,2,3? This is a SHTF scenario I have wondered about.

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#2448772 - 02/08/18 08:00 PM Re: A518 trans [Re: tuff440]
Transman Offline
super stock

Registered: 03/27/11
Posts: 770
Loc: Michigan
RH will shift fully auto 1,2,3.

RE will launch in 3rd with electronics dead since in default the governor solenoid is not being modulated ( so you develop full governor pressure ) so if you pull it in manual low it should launch in 1st then you can upshift manually.

Not the greatest for control but if it hits the fan you can get home.

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#2448776 - 02/08/18 08:10 PM Re: A518 trans [Re: Transman]
mgoblue9798 Offline
enthusiast

Registered: 03/16/10
Posts: 215
Loc: Atlanta, GA
Thank you very much sir.

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#2448789 - 02/08/18 08:29 PM Re: A518 trans [Re: J_BODY]
ChrgrCuda Offline
super stock

Registered: 08/24/08
Posts: 780
Loc: Texas, USA
Originally Posted By J_BODY
Pro Trans builds and has the adapters to put a 518/46RH behind a big block. Darren is installing one in his Coronet project. They have picts on their Facebook page from Sept 13.

Thanks J_Body. I think I read that the 518 was hard to fit in a B-Body, but can be done. I'll try to find the Pro Trans FB page.
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68 Cuda Notchback [Email]10.86@120[/Email] 69 Charger R/T 440/505 2009 Challenger SRT8

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#2448796 - 02/08/18 08:38 PM Re: A518 trans [Re: tuff440]
polyspheric Offline
master

Registered: 10/10/07
Posts: 2713
Loc: New York
GV makes a version for the PG (now) that splits gears, making the 2-speed a 3-speed with the overdrive, but also creating an intermediate gear between 1st and 2nd.
This can be done manually with a 727 conversion + GV, not sure if it's possible to do electronically (rather than try to juggle both controls).
The results for a 727:
1st 2.45:1
1st + GV 1.91:1
2nd 1.45:1
2nd + GV 1.13:1
3rd 1.00:1
3rd + GV .78:1
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#2448797 - 02/08/18 08:38 PM Re: A518 trans [Re: mgoblue9798]
DaveRS23 Offline
master

Registered: 01/20/03
Posts: 4678
Loc: Benton, IL.
Originally Posted By mgoblue9798
To the same level that a properly built 727 will- provided you don't hot rod it with OD engaged. Transmissions are really rated on torque output not horsepower anyways.


Correct me if I'm wrong here, but don't the first 3 gears go through an additional clutch pack in the 518s? A clutch pack that must release for OD. Without proper attention, that could be a point of concern that 727s don't have.
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KOS

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#2448801 - 02/08/18 08:46 PM Re: A518 trans [Re: tuff440]
Transman Offline
super stock

Registered: 03/27/11
Posts: 770
Loc: Michigan
The power from the trans goes through the over running clutch (ORC) and direct clutch in the overdrive unit. I have never seen a failed ORC and direct clutch in the over drive as long as the trans was assembled correctly. The same direct clutch and ORC is use daily in the diesel units as the gas units.

The direct clutch is also used in reverse and is used to slow the vehicle down on coast in forward gears.

The clutch that needs proper attention is the overdrive clutch because the correct shim must be used on the OD piston to time the release of the direct with the application of the OD.

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#2448804 - 02/08/18 08:54 PM Re: A518 trans [Re: tuff440]
ProSport Offline
I Live Here

Registered: 01/20/03
Posts: 17596
Loc: Akron, Ohio
Are there any trans tunnel mods needed in a B-body for the 518 trans?
I know it's a pretty large amount of work in an A-body.

Even though the Gearvendors is only a .78 overdrive I think it would be good enough for me and an easier install. And I like how it will handle full power for an occasional highway brawl.
_________________________
Sassy Grass street Duster, best of 10.69 at 124 driven to the track with 3.23 gears, naturally aspirated on 93 octane.

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#2448812 - 02/08/18 09:00 PM Re: A518 trans [Re: ProSport]
ChrgrCuda Offline
super stock

Registered: 08/24/08
Posts: 780
Loc: Texas, USA
Originally Posted By ProSport
Are there any trans tunnel mods needed in a B-body for the 518 trans?
I know it's a pretty large amount of work in an A-body.

Even though the Gearvendors is only a .78 overdrive I think it would be good enough for me and an easier install. And I like how it will handle full power for an occasional highway brawl.

That's kind of what I was thinking. I have 3.73's with a CRT 727 and I'm turning around 3000 RPM's at 55-60. I know GV is only .78 vs. .69 but if I can keep it around 24-2500 at 70mph I'm good.
_________________________
68 Cuda Notchback [Email]10.86@120[/Email] 69 Charger R/T 440/505 2009 Challenger SRT8

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#2448896 - 02/08/18 10:52 PM Re: A518 trans [Re: mgoblue9798]
Transman Offline
super stock

Registered: 03/27/11
Posts: 770
Loc: Michigan
Originally Posted By mgoblue9798
To the same level that a properly built 727 will- provided you don't hot rod it with OD engaged. Transmissions are really rated on torque output not horsepower anyways.


The last year the Dodge Cummins package used the 48RE OD trans was 2007. Like I stated earlier the geartrain in the OD unit was pretty much the same between gas and diesel.

For 2007 the Cummins made over 600 lbs. ft. of torque. Max GCWR was approx. 20K.

I don't think your torque and vehicle weight will stress the OD like the Cummins will.

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#2449041 - 02/09/18 09:01 AM Re: A518 trans [Re: ChrgrCuda]
MarkM Offline
Worthy

Registered: 01/13/05
Posts: 2226
Loc: USA, MI
Originally Posted By ChrgrCuda
Originally Posted By ProSport
Are there any trans tunnel mods needed in a B-body for the 518 trans?
I know it's a pretty large amount of work in an A-body.

Even though the Gearvendors is only a .78 overdrive I think it would be good enough for me and an easier install. And I like how it will handle full power for an occasional highway brawl.

That's kind of what I was thinking. I have 3.73's with a CRT 727 and I'm turning around 3000 RPM's at 55-60. I know GV is only .78 vs. .69 but if I can keep it around 24-2500 at 70mph I'm good.


I'm a fan of the 518. I have one behind a 512 stroker mated with an Ultra Bell. Between the bell, converter and transmission I've got about $1800 into it. OD shifts are controlled with a pressure switch and a vacuum switch. If you've already got a trans built by CRT though I'd be inclined to go with the GV too.
_________________________
'87 Fifth Avenue: 512 low deck roller / 518 / 8.75


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#2449112 - 02/09/18 11:51 AM Re: A518 trans [Re: hudsonhornet7x]
Harley Offline
super stock

Registered: 10/30/03
Posts: 974
Loc: Queens, New York
Originally Posted By hudsonhornet7x
Will the A518 trans survive a 700 hp engine in a 68 B body?


Good question.

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#2449116 - 02/09/18 12:17 PM Re: A518 trans [Re: hudsonhornet7x]
ric3xrt Offline
super stock

Registered: 01/13/06
Posts: 1100
Loc: Trumbauersville PA
Originally Posted By hudsonhornet7x
Will the A518 trans survive a 700 hp engine in a 68 B body?



Yes
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Truth has no agenda, but those with an agenda fear truth




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#2449157 - 02/09/18 02:23 PM Re: A518 trans [Re: tuff440]
johnnycuda Offline
super stock

Registered: 03/19/08
Posts: 716
Loc: lancaster,california
Darren at ProTrans built my buddies A518 for his '66 Coronet, needed quite a bit of work to the tunnel and floor to get it in.
He has a 470" motor, bottom 11's on motor, low 10s on juice, his has a lockup convertor.
I have a GV in my '70 Cuda, only had to trim the trans crossmember some and put a few dents in the floorboard to get it in.
_________________________
1970 'Cuda,Lime Light,499 Indy S/R's 10.70's @125,street driven ALOT!
1966 Barracuda 360,now a 5spd,Hemi Orange,Hot Rod Air,
New daily driver-2003 Ram 2500 Cummins 5.9
2000 Dodge Ram,360 2wd.
New project-'69 Valiant 2-dr, budget sleeper!

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#2449380 - 02/09/18 11:05 PM Re: A518 trans [Re: tuff440]
WO23Coronet Offline
master

Registered: 01/08/08
Posts: 4047
Loc: Canada
Can they be built to tow in OD and live? Say a 5500lb truck towing a 8-9K loaded car hauler?

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#2449392 - 02/09/18 11:41 PM Re: A518 trans [Re: tuff440]
Transman Offline
super stock

Registered: 03/27/11
Posts: 770
Loc: Michigan
Read my earlier post - the over drive unit is pretty much the same from gas to diesel - and the Cummins with this trans can haul 20k lbs.

Use ATF - 4 and nothing else. Put a trans temp gauge with the pickup in the pan and make sure you have a good cooler. You'll be fine.


Edited by Transman (02/09/18 11:42 PM)

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#2449424 - 02/10/18 06:01 AM Re: A518 trans [Re: WO23Coronet]
Guitar Jones Offline
master

Registered: 12/18/09
Posts: 9815
Loc: in a cattle trailer down by th...
Originally Posted By WO23Coronet
Can they be built to tow in OD and live? Say a 5500lb truck towing a 8-9K loaded car hauler?


I've towed my 30' enclosed at around 12K lbs. with a 47RH and a 48RE with never a problem. Never turned the O/D off. I used to tow about 5K lbs around with my 5.2 Dakota and a 518 (46RH) and had no problems with that either.
_________________________
The Scamp is sold, now just two old trucks.
'92 D250 Club Cab CTD, 47RH conversion, pump tweaks, injectors, rear disc conversion. Hydroboost coming soon
'74 W200 Crew Cab 360, NP435, D44, D60 and NP205 divorced transfer case. Magnum 5.2 MPI and NV4500 coming soon.

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