46RH/47RH questions re: swapping
#1516534
10/13/13 02:54 AM
10/13/13 02:54 AM
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Joined: Oct 2008
Posts: 96
Nampa, Idaho
Wyle E Coyote
OP
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OP
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Joined: Oct 2008
Posts: 96
Nampa, Idaho
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It's become apparent to me that I can't reach my drivability goals with my truck without an overdrive transmission. This is going into my converted Scout 2 that now sports a 360/727/D20 combo. So going to the OD transmission will be relatively easy. What I need to know is what models that used them have a passenger's side drop for the transfer case. I plan on using the matching transfer case, (a NP 241 if memory serves) to make things easier, though I know I will have to make new drivelines and shift linkages. But it's easier than doing all of that AND building a new front axle. Any other advice, hints, tips, tricks, etc. would be greatly appreciated. Thanks everyone!
25 Dodge Roadster
66 D100 440/727 (on 72 D100 chassis)
67 W200 360/727
72 IH TravelAll 1110 4x4 345/727/NP205
76 Scout 2 360/727/D20
'08 Dakota SLT Quad Cab 4wd 4.7L
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Re: 46RH/47RH questions re: swapping
[Re: Wyle E Coyote]
#1516536
10/13/13 08:46 AM
10/13/13 08:46 AM
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Joined: Nov 2008
Posts: 5,961
Greenville, PA
redraptor
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master
Joined: Nov 2008
Posts: 5,961
Greenville, PA
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Quote:
I can't reach my drivability goals with my truck without an overdrive transmission.
And what goals would they be?
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Re: 46RH/47RH questions re: swapping
[Re: redraptor]
#1516537
10/13/13 01:57 PM
10/13/13 01:57 PM
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Joined: Oct 2007
Posts: 3,892
Oregon
hooziewhatsit
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master
Joined: Oct 2007
Posts: 3,892
Oregon
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Early 90s 2500+ I think it was, had married np205s with a passenger side drop.
It took me quite a while to find that 205.
If you ever find yourself in a fair fight, your tactics suck.
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Re: 46RH/47RH questions re: swapping
[Re: Wyle E Coyote]
#1516539
10/14/13 08:34 PM
10/14/13 08:34 PM
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Joined: Nov 2008
Posts: 5,961
Greenville, PA
redraptor
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master
Joined: Nov 2008
Posts: 5,961
Greenville, PA
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Quote:
Quote:
Quote:
I can't reach my drivability goals with my truck without an overdrive transmission.
And what goals would they be?
Mainly I want to get my RPM's down at freeway speeds. Right now, I'm running 31's with 3.54 gears, and she turns about 3k at 70. Even when I run my 33's on it, it doesn't help much. The gearing for it is perfect for most everything else I do with it really. I just need another gear for highway cruising.
Sounds reasonable. Also sounds like a lot of work. I gotta a buddy who wants an O.D. tranny for his slanty cuz of the same reason. Dunno, with the money spent you won't get any realized gas savings for a long time and I don't recall saying about an old car in the junkyard it's there because the motor was over-revved driving across the country. Just sayin'. Take pics for us.
Ok, now everyone beat me up. 
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Re: 46RH/47RH questions re: swapping
[Re: Wyle E Coyote]
#1516543
10/15/13 03:11 PM
10/15/13 03:11 PM
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Joined: Jan 2003
Posts: 10,570
Freeport IL USA
poorboy
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 10,570
Freeport IL USA
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Quote:
And the EFI I am referring to is a converted GM TBI system I have. Let the beatings begin.  
So, how hard was it to convert the GM unit to the small block Mopar? You were going to do a "how to" on that, right? Gene
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Re: 46RH/47RH questions re: swapping
[Re: Wyle E Coyote]
#1516544
10/15/13 08:43 PM
10/15/13 08:43 PM
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Joined: Nov 2008
Posts: 5,961
Greenville, PA
redraptor
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master
Joined: Nov 2008
Posts: 5,961
Greenville, PA
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Quote:
And the EFI I am referring to is a converted GM TBI system I have. Let the beatings begin.
That sounds cool. I'd like to hear more about that. It's interesting that 3.54 gears and 33" tires wouldn't give you a comfortable highway RPM. 
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