Re: Gear Ratio & Tire Size Options For A D600??
[Re: CTD5.9]
#1641773
07/08/14 06:14 PM
07/08/14 06:14 PM
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Quote:
I am currently trying to do the something similar with one. In my case I am putting a club cab and a flat deck on and using it to tow a big goose neck. Mine is getting a 5.9 cummins so I need to get the rpms down, I have not for the life of me been able to find different gear sets for that diff. I have began the search for an auxilary transmission though, either a spicer or brown-lipe with an over drive in it.
As for tires the 20's are fairly out dated, I think 22.5's are fairly common. There are some lower profile ones out there but I am not sure how the rims would work on the trucks dayton system.
That is what I am running into also as far as not finding info. on optional gear sets......thanks!!!
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Re: Gear Ratio & Tire Size Options For A D600??
[Re: finn]
#1641774
07/08/14 06:20 PM
07/08/14 06:20 PM
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19.5 rims are popular with "LoPro" medium trucks, but I see the truck you pictured has the old Dayton style hubs and rims.
You would have to switch your axles out to hub piloted Budds from a later truck. That would get you better (Disc) brakes, although all of the recent trucks have antilock systems which is a further complication.
Unless you can pick up a decommissioned school bus donor cheap, you may want to just enjoy the old girl for what she is: a 50 mph local hauler.
yeah....reality is setting in on a few things unless I want to just change out everything like the drivetrain over to a 12 valve with a 6-speed and change the rear end also..... Not sure I am that excited about changing this much for the purpose??
I have got this "big girl" up over 60 mph fairly easy so its not so horrible the way she is now.....
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Re: Gear Ratio & Tire Size Options For A D600??
[Re: E-Ticket]
#1641775
07/08/14 06:59 PM
07/08/14 06:59 PM
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Joined: Feb 2006
Posts: 2,262 Groveland, MA
SteveS
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I had an F600 of about the same vintage (1978). It had a wide ratio 5-speed, with a single speed rear. It had 22.5" tubeless steel wheels, with somewhat lower profile tires. It would cruise pretty well at 70.
Steve
Someday I'll have another C-body.
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Re: Gear Ratio & Tire Size Options For A D600??
[Re: finn]
#1641778
07/17/14 07:12 PM
07/17/14 07:12 PM
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Joined: Jan 2003
Posts: 16,376
dogdays
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http://www.olddodges.com/dseries.htmhas as good of information as I found online. The D600 used an NP435 transmission as the standard, although a couple of five-speeds were available. Engines were 318 and 361, and clutches were 12" with 13" optional. The gasoline engines did not use SAE bellhousings. R.
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Re: Gear Ratio & Tire Size Options For A D600??
[Re: dogdays]
#1641779
07/19/14 02:32 PM
07/19/14 02:32 PM
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Quote:
http://www.olddodges.com/dseries.htm has as good of information as I found online.
The D600 used an NP435 transmission as the standard, although a couple of five-speeds were available. Engines were 318 and 361, and clutches were 12" with 13" optional. The gasoline engines did not use SAE bellhousings.
R.
thanks.....I saw that link also and it is a strong wealth of information!
If I do ever get the chance to make a change, it will most likely be for a 5 speed with this motor or a 6-speed with a 12 valve CTD??
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Re: Gear Ratio & Tire Size Options For A D600??
[Re: WO23Coronet]
#1641787
08/10/14 07:02 PM
08/10/14 07:02 PM
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That is a thought..... I currently have the truck for sale but part of me does not want to turn loose of it and would seriously like to retain most of its originality for nostalgic reasons. Would like to change it over to a race car hauler or an enclosed race car hauler like back in the day when they were widely used. Our local track is 41 miles each way so it would be tough to justify a CTD change over other than the fact that it would be cool as hell to rumble through the gates at the track with a 12 valve under the hood..... Have been using it a lot lately to haul junk and tree limbs, etc to the dump and it is excellent for that but it tops out at about 60 mph. Would like to make it run 80 mph with ease so that I could drive it at 70 mph with out making it work for it......
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Re: Gear Ratio & Tire Size Options For A D600??
[Re: WO23Coronet]
#1641789
08/11/14 01:12 AM
08/11/14 01:12 AM
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Quote:
What kind of RPM are u turning at 60 MPH?
don't know....funny you ask....I was just thinking about that yesterday when I had it out for a dump run. Should have wired up a tach by now but just never did.
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