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P30 chassis

yellowK20

yellowK20

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Was thinking about taking a P30 chassis and building a tow rig around it , using a squarebody or GMT400 crew cab and medium duty front sheet metal.

Does anyone know the spring pad spacing on the front axle? If it’s 32” I would swap a Dana 60 in .
 
the 3500hd gmt400 is a weird spring width all to there own . not a std 32" or the ford width of 36.5" . if i recall its 34"
 
I wouldn’t use a 3500hd frame ,
Just maybe a nice GMT400 cab
 
i think that motor home is on a 3500 hd frame maybe . thats why i said that .

if its still the old stuff then i got no clue . but a friend of mine years ago built a p30 box truck 14k gvw frame with a 73-87 cab / clip on it with few simple mods for a set of mounts as the frame is more flat and no hump to clear the floor of a truck cab .
 
I think the spring spacing is the same as the 3500HD too. They are between 33 and 34 inches. I have several 3500HD’s at home. I will measure one when I get home.
 
I have no clue what that motor home has under it , wasn’t planning on using it .

I have access to a couple of other P30 chassis that are 8-lug but straight axle front
 
yellowK20 said:
I have no clue what that motor home has under it , wasn’t planning on using it .

I have access to a couple of other P30 chassis that are 8-lug but straight axle front
Click to expand...
OOOOOOOOOOOOOOOOOOOOOOO


now it makes things more clear . . . . you talking motor home the last day or so and then toss this in the mix .
 
Haha yeah , my bad

I think the motor home is 3500HD chassis it has the big 5-lug 19.5 wheels and tires
 
Here's the quick rundown. First off a P30 or P32 chassis has always had IFS front suspension. It's basically the same setup as any C30 front end on a squarebody truck. They bumped the GVW up with heavier coils and later with air bags up front in the coils. It was the chassis that was sold to Workhorse in '98 where it continued along as the widetrack P32 where they pushed the control arm mounting points out 6" per side with a section of box tubing on each side so the front track width was the same as the outer rear dual tire. GVW got pushed up to 18,000 pounds in this form.

So if you want to stuff a D60 under one, it's no different for the most part than converting a C30 over. The frames are straight front to back so it's just a matter of making mounts to match whatever D60 you find for it.
 
ZooMad75 said:
Here's the quick rundown. First off a P30 or P32 chassis has always had IFS front suspension. It's basically the same setup as any C30 front end on a squarebody truck. They bumped the GVW up with heavier coils and later with air bags up front in the coils. It was the chassis that was sold to Workhorse in '98 where it continued along as the widetrack P32 where they pushed the control arm mounting points out 6" per side with a section of box tubing on each side so the front track width was the same as the outer rear dual tire. GVW got pushed up to 18,000 pounds in this form.

So if you want to stuff a D60 under one, it's no different for the most part than converting a C30 over. The frames are straight front to back so it's just a matter of making mounts to match whatever D60 you find for it.
Click to expand...
Hello, I'm new here and found this post very encouraging... possibly.
I'm deep into a build with a 1948 Diamond T truck cab on a 1981 Winnebago chassis for a heavy trailer puller. I need to lower the front with drop spindles. I can't find any listed for the P30. Will the C30 be the same?
Thanks for the input!
 
I have worked many solid front axle P30, in fact I don't recall seeing the ifs until our second batch of workhorse. Oldest P chassis was 76, 82, 86, 89, 94 97, 2000 workhorse, which were leaf srung solid front axles, 2004 2010 2015. I'd didn't work on the 04 and up much, I had moved to different yard by then.
All the earlier were mix of up fitters grumen, utilimaster, union City, were the most common. Mills Supply was my best friend then.

Edit all were gm chassis no ford's or oskosh
 
Last edited:
Rocketdawg said:
Hello, I'm new here and found this post very encouraging... possibly.
I'm deep into a build with a 1948 Diamond T truck cab on a 1981 Winnebago chassis for a heavy trailer puller. I need to lower the front with drop spindles. I can't find any listed for the P30. Will the C30 be the same?
Thanks for the input!
Click to expand...
You won’t find any for a p30. Because nobody fools with them. But if you have a ifs p30 which is more common on the rv side than on stepvans, look at squarebody c30 stuff.
 
ZooMad75 said:
You won’t find any for a p30. Because nobody fools with them. But if you have a ifs p30 which is more common on the rv side than on stepvans, look at squarebody c30 stuff.
Click to expand...
Yes, It's IFS. I ordered a set of drop axles and lowering springs for a C30. I can return them if for some reason it doesn't fit.
Thanks!
 
Wes Harden said:
I have worked many solid front axle P30, in fact I don't recall seeing the ifs until our second batch of workhorse. Oldest P chassis was 76, 82, 86, 89, 94 97, 2000 workhorse, which were leaf srung solid front axles, 2004 2010 2015. I'd didn't work on the 04 and up much, I had moved to different yard by then.
All the earlier were mix of up fitters grumen, utilimaster, union City, were the most common. Mills Supply was my best friend then.

Edit all were gm chassis no ford's or oskosh
Click to expand...
I've got IFS so I ordered drop spindles and lowering springs for a C30. I can return if they don't fit.
Thanks!
 
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