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PostPosted: Thu Jan 20, 2022 1:45 pm 
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3 Deuce Webber

Joined: Wed Mar 31, 2021 9:40 am
Posts: 88
Car Model: 1983 D150 Slantsix 4 speed
My question is if their is a 5 speed that will bolt on. Or what can I do for a faster top speed. 80 mph


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PostPosted: Thu Jan 20, 2022 2:20 pm 
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Board Sponsor & SL6 Racer

Joined: Wed Oct 23, 2002 7:57 pm
Posts: 7397
Location: Waynesboro, Pa.
Car Model: 65 Valiant 2Dr Post
Tell us more about your truck. Is the transmission an OD currently? What gear ratio is the rear. 2 barrel carb? Lean burn still on the engine?

No "bolt in" 5 speed

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PostPosted: Thu Jan 20, 2022 2:27 pm 
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Supercharged
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Joined: Sat Nov 27, 2004 8:03 pm
Posts: 7729
Location: IRWIN PA
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Even though there is no direct bolt in the np
A-535/nv2500 from an early dakota would be the most hassle free swap. Should use the same bellhousing clutch tob and everything else.

https://www.theedgeautomotive.com/produ ... drivetrain


Good luck!

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PostPosted: Thu Jan 20, 2022 6:18 pm 
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Board Sponsor & SL6 Racer

Joined: Wed Oct 23, 2002 7:57 pm
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Location: Waynesboro, Pa.
Car Model: 65 Valiant 2Dr Post
Quote:
Should use the same bellhousing


That transmission bolts to a slant 6 bell?? Maybe I misunderstood.

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PostPosted: Fri Jan 21, 2022 4:48 am 
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Supercharged
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Joined: Sat Nov 27, 2004 8:03 pm
Posts: 7729
Location: IRWIN PA
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Charrlie should know for sure.. he has actually laid hands on these transmissions.. I have not.
I**(think)** the mounting bolt pattern and Bearing retainer is the same as the 833.. But I could be mistaken... Thinking for me is more like assuming... so Take it for what it's worth.

These transmissions are not too common although they have 1"x23 Input splines and other goodies similar to the 833 on the front end.

I wonder if the original poster has a NP435 or an 833 OD in his truck.

Some pictures of the transmission or shifter / hump area would be helpful.

top speed of 60 seems like some other engine issue - not the transmission.

Greg

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PostPosted: Fri Jan 21, 2022 7:36 am 
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3 Deuce Webber

Joined: Wed Mar 31, 2021 9:40 am
Posts: 88
Car Model: 1983 D150 Slantsix 4 speed
Rick Covalt wrote:
Tell us more about your truck. Is the transmission an OD currently? What gear ratio is the rear. 2 barrel carb? Lean burn still on the engine?

No "bolt in" 5 speed

It's a slant six with 1 BBL carb
Not sure if it's in over drive. And how can I check the rear end? I could give you the vin would that help?


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PostPosted: Fri Jan 21, 2022 7:39 am 
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3 Deuce Webber

Joined: Wed Mar 31, 2021 9:40 am
Posts: 88
Car Model: 1983 D150 Slantsix 4 speed
Greg Ondayko wrote:
Charrlie should know for sure.. he has actually laid hands on these transmissions.. I have not.
I**(think)** the mounting bolt pattern and Bearing retainer is the same as the 833.. But I could be mistaken... Thinking for me is more like assuming... so Take it for what it's worth.

These transmissions are not too common although they have 1"x23 Input splines and other goodies similar to the 833 on the front end.

I wonder if the original poster has a NP435 or an 833 OD in his truck.

Some pictures of the transmission or shifter / hump area would be helpful.

top speed of 60 seems like some other engine issue - not the transmission.

Greg

I'll send a picture in a bit. What could be the engine issue?


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PostPosted: Fri Jan 21, 2022 7:59 am 
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Supercharged
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Joined: Sat Nov 27, 2004 8:03 pm
Posts: 7729
Location: IRWIN PA
Car Model:
Slantsix83 wrote:
Greg Ondayko wrote:
Charrlie should know for sure.. he has actually laid hands on these transmissions.. I have not.
I**(think)** the mounting bolt pattern and Bearing retainer is the same as the 833.. But I could be mistaken... Thinking for me is more like assuming... so Take it for what it's worth.

These transmissions are not too common although they have 1"x23 Input splines and other goodies similar to the 833 on the front end.

I wonder if the original poster has a NP435 or an 833 OD in his truck.

Some pictures of the transmission or shifter / hump area would be helpful.

top speed of 60 seems like some other engine issue - not the transmission.

Greg

I'll send a picture in a bit. What could be the engine issue?



Could be anything from worn / Loose timing chain, valves, Rings, But more likely Ignition system / timing or Carb Tuning. Could be a bent push rod as well.

I doubt it's valve adjustment if it is a hydraulic Lifter Head and Cam/Valve gear.

Greg

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PostPosted: Fri Jan 21, 2022 8:09 am 
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3 Deuce Webber

Joined: Wed Mar 31, 2021 9:40 am
Posts: 88
Car Model: 1983 D150 Slantsix 4 speed
Greg Ondayko wrote:
Slantsix83 wrote:
Greg Ondayko wrote:
Charrlie should know for sure.. he has actually laid hands on these transmissions.. I have not.
I**(think)** the mounting bolt pattern and Bearing retainer is the same as the 833.. But I could be mistaken... Thinking for me is more like assuming... so Take it for what it's worth.

These transmissions are not too common although they have 1"x23 Input splines and other goodies similar to the 833 on the front end.

I wonder if the original poster has a NP435 or an 833 OD in his truck.

Some pictures of the transmission or shifter / hump area would be helpful.

top speed of 60 seems like some other engine issue - not the transmission.

Greg

I'll send a picture in a bit. What could be the engine issue?



Could be anything from worn / Loose timing chain, valves, Rings, But more likely Ignition system / timing or Carb Tuning. Could be a bent push rod as well.

I doubt it's valve adjustment if it is a hydraulic Lifter Head and Cam/Valve gear.

Greg

More than likely it's the push rods. How many push rods come in a slant six? 12?


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PostPosted: Fri Jan 21, 2022 8:40 am 
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Supercharged
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Joined: Sat Nov 27, 2004 8:03 pm
Posts: 7729
Location: IRWIN PA
Car Model:
Yes there should be 12.

If you are actually missing a pushrod somehow, the engine would run horrible.

Greg

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PostPosted: Fri Jan 21, 2022 8:49 am 
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3 Deuce Webber

Joined: Wed Mar 31, 2021 9:40 am
Posts: 88
Car Model: 1983 D150 Slantsix 4 speed
Greg Ondayko wrote:
Charrlie should know for sure.. he has actually laid hands on these transmissions.. I have not.
I**(think)** the mounting bolt pattern and Bearing retainer is the same as the 833.. But I could be mistaken... Thinking for me is more like assuming... so Take it for what it's worth.

These transmissions are not too common although they have 1"x23 Input splines and other goodies similar to the 833 on the front end.

I wonder if the original poster has a NP435 or an 833 OD in his truck.

Some pictures of the transmission or shifter / hump area would be helpful.

top speed of 60 seems like some other engine issue - not the transmission.

Greg

Does this picture help


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PostPosted: Fri Jan 21, 2022 8:58 am 
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Board Sponsor & SL6 Racer

Joined: Wed Oct 23, 2002 7:57 pm
Posts: 7397
Location: Waynesboro, Pa.
Car Model: 65 Valiant 2Dr Post
Yes, that is the non overdrive transmission.

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2 Mopars come with Spark plug tubes. One is a world class, racing machine. The other is a 426 CI. boat anchor!
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12.80 @ 102.88
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PostPosted: Fri Jan 21, 2022 9:01 am 
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3 Deuce Webber

Joined: Wed Mar 31, 2021 9:40 am
Posts: 88
Car Model: 1983 D150 Slantsix 4 speed
Rick Covalt wrote:
Yes, that is the non overdrive transmission.

So it's a NP435?


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PostPosted: Fri Jan 21, 2022 9:40 am 
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Supercharged
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Joined: Sat Nov 27, 2004 8:03 pm
Posts: 7729
Location: IRWIN PA
Car Model:
Slantsix83 wrote:
Rick Covalt wrote:
Yes, that is the non overdrive transmission.

So it's a NP435?

I have that trans in my '77 D200..
4.10 Rear Gear Ratio with 235 85 16 Tires

It will do 100Mph or more..

The engine is quite wound up but it will do it.

Greg

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PostPosted: Fri Jan 21, 2022 4:04 pm 
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3 Deuce Webber

Joined: Wed Mar 31, 2021 9:40 am
Posts: 88
Car Model: 1983 D150 Slantsix 4 speed
Rick Covalt wrote:
Yes, that is the non overdrive transmission.

Also do you happen to know the size of the shift knob threads so I can buy another shifter.


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