Re: Options for Overdrive Auto Trans - Ebody
[Re: RoadRunner]
#2854912
12/03/20 07:38 PM
12/03/20 07:38 PM
|
Joined: Jan 2003
Posts: 12,814 Benton, IL.
DaveRS23
Master of nothing...
|
Master of nothing...
Joined: Jan 2003
Posts: 12,814
Benton, IL.
|
IF the budget matters, the 518 goes in for 1/2 the price of the GM based ODs. And you do not have to mod the tunnel. With the torque that our big blocks make, the difference in 1st ratios is a non issue.
What is there to think about?
Master, again and still
|
|
|
Re: Options for Overdrive Auto Trans - Ebody
[Re: DaveRS23]
#2855084
12/04/20 05:17 AM
12/04/20 05:17 AM
|
Joined: Jan 2008
Posts: 2,592 None
71rm23
master
|
master
Joined: Jan 2008
Posts: 2,592
None
|
IF the budget matters, the 518 goes in for 1/2 the price of the GM based ODs. And you do not have to mod the tunnel. With the torque that our big blocks make, the difference in 1st ratios is a non issue.
What is there to think about? Like I said, I'd rather keep it all Ma Mopar and the other thing to consider is that I'm hoping I don't have to mod the tunnel was the other thing. The tranny will be behind a 400 stroked to 470. Have you done this DaveRS?
|
|
|
Re: Options for Overdrive Auto Trans - Ebody
[Re: 71rm23]
#2855135
12/04/20 09:45 AM
12/04/20 09:45 AM
|
Joined: Jan 2003
Posts: 12,814 Benton, IL.
DaveRS23
Master of nothing...
|
Master of nothing...
Joined: Jan 2003
Posts: 12,814
Benton, IL.
|
Yes, I have. I posted a few details in an earlier post in this thread.
Master, again and still
|
|
|
Re: Options for Overdrive Auto Trans - Ebody
[Re: gtx6970]
#2855353
12/04/20 05:36 PM
12/04/20 05:36 PM
|
Joined: May 2005
Posts: 4,882 Florida
BDW
master
|
master
Joined: May 2005
Posts: 4,882
Florida
|
$6k can buy me A LOT of gas..It would take me YEARS to recoup the investment . even at 5 or 6 miles per
Bearing in mind I plan to drive the snot out of the car locally. BUT,,,,,,,and/if I should decide to make a longer distance trip. I'll rent a truck and trailer for a few days You’re absolutely right, even the 518 doesn’t make financial sense for most. I struggled with making the swap, because I’m cheap and always feel compelled to do a cost benefit analysis. The 1 thing you can’t put a price on is enjoyment. I found myself not driving the car as much because it was so annoying running along at 4k RPM in the slow lane getting passed by minivans while my teeth rattled. My only regret is not doing it sooner. If you’re only doing city driving and stoplight to stoplight runs, save your money.
|
|
|
Re: Options for Overdrive Auto Trans - Ebody
[Re: BDW]
#2855418
12/04/20 07:46 PM
12/04/20 07:46 PM
|
Joined: Aug 2005
Posts: 6,033 Salem
Grizzly
Moparts Proctologist
|
Moparts Proctologist
Joined: Aug 2005
Posts: 6,033
Salem
|
BDW nailed it.
I will also add your money invested into an engine build will last much longer. Overdrive is directly responsible for today's engines lasting 200,000 miles.
The days of a833's, 727's and 4.10 dump truck gears are over.
Mo' Farts
Moderated by "tbagger".
|
|
|
Re: Options for Overdrive Auto Trans - Ebody
[Re: DaveRS23]
#2855644
12/05/20 11:59 AM
12/05/20 11:59 AM
|
Joined: Mar 2007
Posts: 3,298 West Coast, USA
jbc426
master
|
master
Joined: Mar 2007
Posts: 3,298
West Coast, USA
|
Curious what the angle of the engine/trans is without modifying the tunnel. The 518 is even larger than most transmissions at the rear, and with it pointed down enough to clear the torsion bar crossmenber and floor, it must angle down at quite a large angle.
1970 Plymouth 'Cuda #'s 440-6(block in storage)currently 493" 6 pack, Shaker, 5 speed Passon, 4.10's 1968 Plymouth Barracuda Convertible 408 Magnum EFI with 4 speed automatic overdrive, 3800 stall lock-up converter and 4.30's (closest thing to an automatic 5 speed going)
|
|
|
Re: Options for Overdrive Auto Trans - Ebody
[Re: jbc426]
#2855850
12/05/20 09:57 PM
12/05/20 09:57 PM
|
Joined: May 2005
Posts: 4,882 Florida
BDW
master
|
master
Joined: May 2005
Posts: 4,882
Florida
|
Curious what the angle of the engine/trans is without modifying the tunnel. The 518 is even larger than most transmissions at the rear, and with it pointed down enough to clear the torsion bar crossmenber and floor, it must angle down at quite a large angle. My 518 went in my Challenger and matched the 727 angle without mods to tunnel. I shimmed it to 2 degrees downward.
|
|
|
Re: Options for Overdrive Auto Trans - Ebody
[Re: BDW]
#2856054
12/06/20 02:02 PM
12/06/20 02:02 PM
|
Joined: Mar 2007
Posts: 3,298 West Coast, USA
jbc426
master
|
master
Joined: Mar 2007
Posts: 3,298
West Coast, USA
|
Curious what the angle of the engine/trans is without modifying the tunnel. The 518 is even larger than most transmissions at the rear, and with it pointed down enough to clear the torsion bar crossmenber and floor, it must angle down at quite a large angle. My 518 went in my Challenger and matched the 727 angle without mods to tunnel. I shimmed it to 2 degrees downward. Wow, surprisingly good angle for no cutting of the tunnel metal.
1970 Plymouth 'Cuda #'s 440-6(block in storage)currently 493" 6 pack, Shaker, 5 speed Passon, 4.10's 1968 Plymouth Barracuda Convertible 408 Magnum EFI with 4 speed automatic overdrive, 3800 stall lock-up converter and 4.30's (closest thing to an automatic 5 speed going)
|
|
|
Re: Options for Overdrive Auto Trans - Ebody
[Re: BDW]
#2856449
12/07/20 11:06 AM
12/07/20 11:06 AM
|
Joined: Jun 2003
Posts: 21,796 It's a dry heat
gtx6970
Too Many Posts
|
Too Many Posts
Joined: Jun 2003
Posts: 21,796
It's a dry heat
|
$6k can buy me A LOT of gas..It would take me YEARS to recoup the investment . even at 5 or 6 miles per
Bearing in mind I plan to drive the snot out of the car locally. BUT,,,,,,,and/if I should decide to make a longer distance trip. I'll rent a truck and trailer for a few days You’re absolutely right, even the 518 doesn’t make financial sense for most. I struggled with making the swap, because I’m cheap and always feel compelled to do a cost benefit analysis. The 1 thing you can’t put a price on is enjoyment. I found myself not driving the car as much because it was so annoying running along at 4k RPM in the slow lane getting passed by minivans while my teeth rattled. My only regret is not doing it sooner. If you’re only doing city driving and stoplight to stoplight runs, save your money. This is the point i was trying to make My car is not a long distance driver. More or a local cruise in and around town. Playtoy type of car. I might take it to Phoenix once or twice a year.....maybe. But.....if i do. Ill live with it at 65mph. . Or ......I'll take back roads and see the country. Anything farther than that. Ill rent a truck and trailer and haul it .
|
|
|
Re: Options for Overdrive Auto Trans - Ebody
[Re: autoxcuda]
#2857411
12/08/20 11:34 PM
12/08/20 11:34 PM
|
Joined: Jan 2003
Posts: 8,567 Candler,NC / Myrtle Beach, SC
JDMopar
master
|
master
Joined: Jan 2003
Posts: 8,567
Candler,NC / Myrtle Beach, SC
|
To the Fellow who came up with the idea to notch the transmission case to make it fit: my hat is off to you. Used to be a significant butcher job before the case notch. 44rh for me: more power to the wheels. I believe that was 1wildRT that came up with the notching. Yep....it was Randy. Hate that he ain't here anymore!
|
|
|
Re: Options for Overdrive Auto Trans - Ebody
[Re: Kern Dog]
#2857550
12/09/20 10:55 AM
12/09/20 10:55 AM
|
Joined: Jan 2003
Posts: 5,791 Hamilton, Ontario Canada
Magnum
master
|
master
Joined: Jan 2003
Posts: 5,791
Hamilton, Ontario Canada
|
To me, the down side of the 518 is the crappy 2.45 first gear ratio is a carryover from the 727. The 700R4/4L60E has a 3.06 first gear but second is a tall 1.62. That is a wide spread, sort of reminds me of the 833 OD 4 speed. It may seem like crap on an rpm formula but that 2.45 is what we consider close ratio. This is ideal for powerful engines. You put the deep ratio in the rear and now you have less rpm drop between gears. The 3 something ratios you speak of are from an era of gutless engines. The 4L60E and 833 OD are for moving heavy vehicles with weak engines off the light and with no consideration for big rpm drop between gears. I hear what you are saying but until you have tried both, don't be shy of a tall 1st. On an unrelated note. This is 518 vs NV3500. They soak up alot of power. I did a 518 swap in a truck. While climbing a bridge near me. I had to turn off the overdrive and unlock the converter to climb this bridge in 4rth. When I swapped to the 5 spd manual. At the same rpm I could easily climb the bridge in 5th gear. The same truck had a 3 mph increase in trap speed and 2 mpg improvement. I am not saying a Silversport 4L60E would be any better than a 518 but after seeing the numbers for me, I'm not a fan of 518. The rpm change seems to be the only thing talked about but poor mileage in Ram1500's make me thing they are not the way to go.
69 Super Bee, 93 Mustang LX, 04 Allure Super
|
|
|
Re: Options for Overdrive Auto Trans - Ebody
[Re: moparx]
#2857809
12/09/20 08:59 PM
12/09/20 08:59 PM
|
Joined: Jan 2003
Posts: 12,814 Benton, IL.
DaveRS23
Master of nothing...
|
Master of nothing...
Joined: Jan 2003
Posts: 12,814
Benton, IL.
|
I have a forward manual valve body in my 518. The Hemi wants shifted at 6,800. To get the most out of it, manual shifting was the only real answer. Besides, I didn't want a strong hit going into 2nd and didn't want reverse to bang in with the 850 RPM idle.
I called A & A and they got it right the first time. It works good with the Slap Stick.
Master, again and still
|
|
|
|
|