I was at the junkyard today getting some doors for a project and I ran across this truck that looked higher than most…. I believe it is an f250 highboy. It has a divorced transfer case, and the big chrome hubs. I'm not sure how to post pictures but it had 2 blocks stacked on top of each other in the rear, and the front had leaf springs with a total of six leaf springs. It definitely sits higher than my 79 f350. I was wondering if the springs are interchangeable between the mid 70s f250s and a 79 f350 and if the f350 springs are any different from the f250 springs (load capacity wise).
Thanks!

 

To post photos, upload the pics to Photobucket. Copy and paste the IMG tag into your post. Pictures will magically appear.

Yes, there is a definite difference between F-250 and F-350 springs. That's why the designations exist. An F-250 is a 3/4 ton and a 350 is a one ton.

 

High Boys have a divorced transfer case and an in-cab fuel tank.

1967/76 F250 4WD & 1977 F250 4WD before serial number Y20,001 (all High Boys) have either 5 or 6 leaf front spring pack.

1977 F250 4WD from serial number Y20,001 (not a High Boy), 1978/79 F250 4WD & 1979 F350 4WD have a 2 leaf front spring pack.

High Boy springs will not fit non High Boys.

 

I realize there is a difference between f250s and 350s, as in the 350 4x4 had a dana 60 and f250s did not. So your saying that a 79 f250 and 79 f350 have different springs? (I know that wasn't my original question ) Dimension wise are they the same? In the 90s,(I realize we are not talking about 90s trucks..) the only real difference was the axles. The 250/350 springs had the exact same dimensions. the rear springs in the 90s f250/f350 are the same. Thats why I asked.
Thanks for the replies!

 

I made no mention if F250 4WD springs were different than F350 4WD springs. What I said was that High Boy springs will not fit non High Boys!

2 leaf spring pack same dimensions: 1977/79 F250 4WD & 1979 F350 4WD.

Regular/Super/Crew Cab springs may be the same, may not be...as it depends on the load rates.

 

Really , won't fit according to what info? My 78 had some old wore out 6 pk HB leaf springs under the front end...they were PO installed along with some other stupidness (blocks when the wore out springs started to sag).

HB front springs are the same 3" width as 77-79 2 leaf. Mine had no modifications to the front spring hanger or the rear shackles. All were OEM.

It now has some 4" Rough Country springs WITHOUT blocks. And yes I cut off the extra u-bolt, it was a mid job pic.

Here's How to Post Pictures:
1. Login to FTE.
2.Click User CP (In the Top Left Hand Corner)
3.(On the Left, There will be a list, The 5th Option Down, will say "Pictures & Albums) Click That.
4.Then, Click Add Album, Enter a title, and description, if ya want to.
5. Click Upload Pictures, Then click Browse, Locate the Files of your truck. (You can add 3 files at a time)
5. Click Upload.
6. Add a description to the individual pictures, then click save.
7. Add more files if ya want.
8. Click The Picture you want to post, it will give you two codes at the bottom, Right Click The Second one (It say's BB Code, Then Say's [IMG]http:blahblahblah...[/IMG])
Then, Once that is highlighted, Right Click, Then Copy, Then Paste it into your post.
You can add up to 30 Images in one FTE Post.

 

Rich, I thought high boy springs were narrower than the 3" wide '78/79 springs? Correct me if I am wrong cause I have never physically measured but seem to remember this argument before.

 

Only on the rear....HB REAR springs are 2 1/4 or 2 1/2 wide??? But for sure the fronts are 3". HB front springs onto 77.5 to 79 is a common swap. How do I know this, because I have taken HB fronts off and put them on a 79 front before, its a direct bolt on.

 

NumberDummy my comment was a response to VocaTexas. Sorry if it sounded like I was attacking anyone So 77&79F250 how much of a difference did the HB springs make? How much of a block was necessary in the back to make it sit level? These springs are more than likely worn out… It also has a 351c in it. I'm about 99% sure I know the answer to this question, but did ford ever put a 351c in the 70s trucks? It has a ford 4bbl intake on it, but that doesn't mean much.. I might take the heads off and see if they're the quench type yeah right, maybe ill get lucky…..
Ill try to post some pics now!

 

It keeps it failed to upload. It doesn't say why. Any thoughts?

 

If you can locate some HB front springs NOT worn out, you will only get a 2" to maybe 3" front lift, but good luck finding some not worn out.

Rear HB springs are to narrow to directly bolt on without changing both rear spring (spring hangers) also. And that ='s rivet grinding and way to much work, its not worth it.

Just get a 4" lift kit system, a lift kit is new front springs, system is front and rear, FYI you will need longer soft brake lines.

Smart thing to do it get a new set of Rough Country, Sky Jacker or Superlift 4" springs.

Being a paying supporter of the site, make adding pics easy.

They added the front block (duh bad idea) and stacked (duh bad idea #2) 2 OEM blocks in the back to level it out.

My next plan is new rear 4" springs, but I like the overloads and sway bar.

 

79-F350, I think you have to have 25 posts before it will allow you to post pics...go comment on one more thread somewhere else, then come back to your thread and you should be good.

 

Okay good to know.. Ill do that haha!
I don't know if anyone is still following this post, but turns out the truck is in fact a highboy, its a 73. It does have a 351 Cleveland 4v 4 bolt main. And for those of you wondering if it fits just perfect, looks like you have to notch the frame a tad to get the stock exhaust manifolds to clear haha.
Thanks for the replies!

 

Yea it a HB, and NO NO NO you do not or should not have to notch the frame. At least to get a 460 to fit in a 78 4x4 4 spd there are truck versus car exhaust manifolds that dump a little further back.

Maybe there is a different vehicle 351C application that will work you for? Post up the question in the engine forums for some extra help BEFORE YOU NOTCH....!

 

351C was a car only engine