[markdra77]

Anybody out there know what classifies a truck as a W400 . I have one but none of the
Part srores show that model. I was thinking cause maybe its a.dually but not sure

 

[Elwenil]

The W400 is basically a 1 1/4 ton truck.  Usually a chassis cab that was turned into an ambulance.  It's just a higher weight class than the W300/W350.

 

[R!bcracker]

arent the 400 and up models typically classified as MED duty trucks?

 

[Mike Barf]

them things r over built, some of the HD parts will not fit.  met a mopar guy that had one, showed me the front wheel bearing, thing was GIANT, thought it came off some military 2 ton rig or something.

 

[markdra77]

has a dana 60 front and 70 rear and a utility bed got it for 1300 with a running
Welding machine so I cant complain and the extra payload is good
for haulin that welder

 

[Mike Barf]

<---------    jealous.

happy for ya on the deals, but for parts you are going to need a part number for them to cross reference.

 

[340SHORTY]

 

[Elwenil]

Almost everything for the W400 should be the same as a W300.  The axles and all are the same, it just has heavier springs.

 

[712edf]

Almost everything for the W400 should be the same as a W300. The axles and all are the same, it just has heavier springs.

Exactly. the W400 was introduced when the much gianter W600 was discontinued after 1977. The few W400 that I have seen (on internet) were ambulance or fire pumpers.

And like I said on Joe's site, parts stores cant mentally cope with anything bigger than 1-ton.

Bucky

 

[Elwenil]

Actually the W400 was around at least back in '73. Lots of '73 and '74 W400 Air Force ambulances running around. Also, in the early '80s you could get a W450:

 

[85 Royal SE Prospector]

100 was 1/2 ton and they went up in 1/4 ton increments. GM/AMC used to use one less 0, now GM/Dodge use one more 0.

 

[Elwenil]

100 and 150 are both considered 1/2 ton.  Judging by how they used the numbers, 150 sometimes designated a slightly heavier suspension, then in the '80s 150 was the "normal" 1/2 ton designation and a 100 meant a slightly lighter 1/2 ton.  After Dodge went to the 150, 150, 350 standard, no other even hundred number was used except for the 100.

 

[85 Royal SE Prospector]

100 and 150 are both considered 1/2 ton. Judging by how they used the numbers, 150 sometimes designated a slightly heavier suspension, then in the '80s 150 was the "normal" 1/2 ton designation and a 100 meant a slightly lighter 1/2 ton. After Dodge went to the 150, 150, 350 standard, no other even hundred number was used except for the 100.

For a 1/2 ton that's basically the case.

100s tended to have 8.25 rears and lower GVWRs while 150s were more often equipped with 9.25s and higher GVWRs. Some years that was different but the initial start was basically like that anyway.

 

[PowerWagonPete]

100 and 150 are both considered 1/2 ton. Judging by how they used the numbers, 150 sometimes designated a slightly heavier suspension, then in the '80s 150 was the "normal" 1/2 ton designation and a 100 meant a slightly lighter 1/2 ton. After Dodge went to the 150, 150, 350 standard, no other even hundred number was used except for the 100.

For a 1/2 ton that's basically the case.

100s tended to have 8.25 rears and lower GVWRs while 150s were more often equipped with 9.25s and higher GVWRs. Some years that was different but the initial start was basically like that anyway.

The axles had nothing to do with it. The 150-series pickups were rated at 6100# GVW due to slightly heavier springs and were originally created for the sole purpose of skirting federal emissions regulations.

 

[712edf]

Yes, when my dad got a new 75 Chevy 1/2 ton 4x4, he specificed one with over #6000 GVW so it would still burn leaded gas. later years changed.

Bucky

 

[712edf]

Actually the W400 was around at least back in '73. Lots of '73 and '74 W400 Air Force ambulances running around. Also, in the early '80s you could get a W450:

My 74 FSM shows no reference of a W400. Not saying they didnt exist though.

 

[4x4 440]

The axles had nothing to do with it. The 150-series pickups were rated at 6100# GVW due to slightly heavier springs and were originally created for the sole purpose of skirting federal emissions regulations.

Is that why my 1978 Ramcharger is listed as 6001# GVW?

 

[moparmuscle1]

I scrapped a W300 and mine had Dana 70's , front and rear . 1968 is also stamped into the axle's

 

[Elwenil]

Not uncommon.  The standard 6,500 lbs front axle was the closed knuckle D70 until the open knuckle D60 replaced it in '75.

 

[E.Roy]

My 74 FSM shows no reference of a W400. Not saying they didnt exist though.

11 year thread resurrection, but I just read 1977 was 1st year of W400, (last year 1981?).
I was searching to see if the W400 came with a 1/4" thick frame like the longer wheelbase Cab/Chassis trucks did.
Other RCC thread What years did Dodge make the D400?