Author Topic: 78 Trailduster Sport question: Manual/Auto tranny provisions  (Read 913 times)

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Offline RCCADMAN

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I have a 78 trailduster sport body in great shape as far as very little to no rust. (No frame or running gear, although it is a factory 440 with AC.)
I noticed the other day, (No, I have not spent a lot of time analyzing this thing) that there are two holes in the transmission cover. One where the transfer case stick should be, and one where the manual tranny stick should be. Am I to assume that this was also a factory 4 SP? Was there provisions for the manual tranny in auto trucks?

Also, in 78, was the transmission still a 3sp if it was a manual, or were the manuals a 4sp?
EDIT: WIKI says they came with a 4sp man or 3sp auto.
« Last Edit: July 23, 2020, 08:55:43 am by RCCADMAN »
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    Offline 86w250

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    Re: 78 Trailduster Sport question: Manual/Auto tranny provisions
    « Reply #1 on: July 23, 2020, 08:56:43 am »
    I cannot answer the holes in the floor question, but if your Ramcharger is a factory 440 4x4, it would have had a 4 spd manual NP435. 
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    Offline RCCADMAN

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    Re: 78 Trailduster Sport question: Manual/Auto tranny provisions
    « Reply #2 on: July 23, 2020, 09:27:07 am »
    I cannot answer the holes in the floor question, but if your Ramcharger is a factory 440 4x4, it would have had a 4 spd manual NP435.
    I did not know that the factory 440's came standard with a 4sp. Now I do. Thanks!
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    Offline 86w250

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    Re: 78 Trailduster Sport question: Manual/Auto tranny provisions
    « Reply #3 on: July 23, 2020, 09:29:32 am »
    Well I don't think a 440 with 4spd would be standard but it was a factory option.
    Oh Yeah!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
    1986 Dodge w250 727 400 4bbl
    1945 Willys MB
    1967 Dodge Charger
    2013 Dodge Dart SE slow!!!!

    Offline RCCADMAN

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    Re: 78 Trailduster Sport question: Manual/Auto tranny provisions
    « Reply #4 on: July 23, 2020, 09:37:02 am »
    Well I don't think a 440 with 4spd would be standard but it was a factory option.
    OK, I misunderstood the intention of your answer. IF it was a manual, it would have been a 4sp NP435 and not a 3sp manual. Thank you for your clarification.
    74 RC SE 4X4
    77 RC HD 2WD
    74 RC rust bucket Parts truck
    78 Trailduster Body
    99 Durango SLT 360
    93 F350 Dually Centurian 460 4X4 Crew

    Offline SuperBurban

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    Re: 78 Trailduster Sport question: Manual/Auto tranny provisions
    « Reply #5 on: July 23, 2020, 05:38:19 pm »
    None of my 70's auto trucks have the second hole in the floor. I bet a prior owner changed out the hump with one from a manual truck, due to the old one rusting out.
    77 W200, 360/727/NP203/D44HD/D60 (Wifes Toy)
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    Offline RCCADMAN

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    Re: 78 Trailduster Sport question: Manual/Auto tranny provisions
    « Reply #6 on: July 23, 2020, 06:02:30 pm »
    None of my 70's auto trucks have the second hole in the floor. I bet a prior owner changed out the hump with one from a manual truck, due to the old one rusting out.
    None of the floors are rusted tho, so I'm thinking this was a factory 4sp now. I will look closer. If I recall, the pedals and steering column are gone as well. This was a body I grabbed quick for $400 for a new body on my rusted out 74, so I have not analyzed it much, but I know there is very little rust beyond surface rust.
    74 RC SE 4X4
    77 RC HD 2WD
    74 RC rust bucket Parts truck
    78 Trailduster Body
    99 Durango SLT 360
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    Offline SuperBurban

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    Re: 78 Trailduster Sport question: Manual/Auto tranny provisions
    « Reply #7 on: July 23, 2020, 07:08:44 pm »
    Look for the hole where the clutch rod goes through the firewall. An auto will have an oval cover over it. one converted later, will likely have a rectangle patch made up.
    77 W200, 360/727/NP203/D44HD/D60 (Wifes Toy)
    77 M887- 318/727/NP203 D44HD/D60
    78/86 Ramcharger.  360/727/NP203 D44/9&1/4
    85/89/90 D150/W250 5.9TBI/435/241 D44HD/D60HD
    85 W350 360/727/241 D44HD/D60
    97 B3500 5.9MPFI/518 D60HD
    20 Pacifica Hybrid, 3.6 V6, EVT 1 speed trans.
    projects:
    85 Country Coach RV, 5.9 Cummins/TH475,GV od,US gear Exhaust brake,D70HD (4 wheel disk brakes, 10 lug 19.5 rims.

    Offline Mighty Quinn

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    Re: 78 Trailduster Sport question: Manual/Auto tranny provisions
    « Reply #8 on: July 23, 2020, 07:54:04 pm »
    When I ordered my truck in '75 you could only get the 440 with an auto. The late 440's(after 1971 or '72)were externally balanced and didn't have the crank shaft drilled for the pilot bushing needed for the input shaft of a np435.
    1976 W100 Adventurer Sport, standard cab,Sweptline short bed,400,np435 354/355 Dana 44FBJ mile marker hubs/9.25
    1978 AW100 RC Custom 440 Loadflite auto -8 track
    1986 AW150 RC Royal SE parts truck
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    Offline MikeT

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    Re: 78 Trailduster Sport question: Manual/Auto tranny provisions
    « Reply #9 on: July 23, 2020, 08:23:42 pm »
    Never a 4spd 440 in a Ramcharger. You could get a 400 4spd, 435 or 445 trans.
    '75 Trail Duster 440 4spd,
    '77 Trail Duster 400 4spd

    Offline Mighty Quinn

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    Re: 78 Trailduster Sport question: Manual/Auto tranny provisions
    « Reply #10 on: July 25, 2020, 11:58:53 am »
    So, Mike T, what year is the 440 in your '75 TD?
    1976 W100 Adventurer Sport, standard cab,Sweptline short bed,400,np435 354/355 Dana 44FBJ mile marker hubs/9.25
    1978 AW100 RC Custom 440 Loadflite auto -8 track
    1986 AW150 RC Royal SE parts truck
    2018 Ram 2500 HD Tradesman, crew cab, 6.4 Hemi

    Offline MikeT

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    Re: 78 Trailduster Sport question: Manual/Auto tranny provisions
    « Reply #11 on: July 28, 2020, 10:13:14 am »
    So, Mike T, what year is the 440 in your '75 TD?

     You know, I really don't remember. I cant remember things I did yesterday, and it was 25 some years ago that I swapped that 440 into my truck. I was still a kid, just wanted to know how to build an engine. I figured if I am going to build one, why not a big block. I found the pieces and put it together, and it still runs good. Time flies!
    '75 Trail Duster 440 4spd,
    '77 Trail Duster 400 4spd

    Offline Mighty Quinn

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    Re: 78 Trailduster Sport question: Manual/Auto tranny provisions
    « Reply #12 on: July 30, 2020, 09:13:44 am »
    You got that "time flies" thing right. I was just dreaming about pepping up my RC 440 and wondering what compression ratio and cam to put in it for a mild rebuild.
    1976 W100 Adventurer Sport, standard cab,Sweptline short bed,400,np435 354/355 Dana 44FBJ mile marker hubs/9.25
    1978 AW100 RC Custom 440 Loadflite auto -8 track
    1986 AW150 RC Royal SE parts truck
    2018 Ram 2500 HD Tradesman, crew cab, 6.4 Hemi

    Offline Trailduster79

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    Re: 78 Trailduster Sport question: Manual/Auto tranny provisions
    « Reply #13 on: August 11, 2020, 08:27:09 am »
    I have never seen an auto truck have the hole for the manual shifter.
    79 Trailduster 360-727-NP203/NP205/60's38.5 SX's (440 Coming Eventually)

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    Offline RCCADMAN

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    Re: 78 Trailduster Sport question: Manual/Auto tranny provisions
    « Reply #14 on: August 14, 2020, 09:34:34 am »
    I'm going to have to get some pics and investigate more. I will also have to dig out the core support from the back and analyze the code tag. Without getting attacked by the bees who have taken shelter all over these rigs. LOL
    74 RC SE 4X4
    77 RC HD 2WD
    74 RC rust bucket Parts truck
    78 Trailduster Body
    99 Durango SLT 360
    93 F350 Dually Centurian 460 4X4 Crew

     

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