73-77 Highboy front leaf pack count is 6 I do believe, and yes they have a positive arch. Like a aftermarket lift kit, look for broken middle leafs right where the u-bolts clamp.

77.5 -79 have 2 leafs and are almost flat or even have some negative arch. A $80 add-a leaf will go in there easy.

 

Yeah, I just checked that out about the 6 leafs for the Highboy front and that's correct. I've learned something about mine though. Someone added a leaf so mine has 7. Then I remember, my truck was once used as a plow truck so that makes sense. I kinda wondered why I need to get longer U bolts when I mounted my front axle.

 

THANKS! One of the most informative threads ever! Answered many of my questions. I was able to determine that I have an unmolested 74 crew cab highboy. How cool!

 

Hey Bill (ND)... Having just read that seat belts were required from 1966 and on, I find it remarkable, that when flying in domestic commerical airlines, part of the safety demonstration, is how to fasten a seat belt... well DUH... guess it is instruction for all of us who have not been in a car since 1965...

 

"remove all warning lables, and the shallow end of the gene pool will dry up naturallly.."

 

You could get 7.50x16 tires from the factory.

They were.

I just bought (for free) a '77 High Boy with a 300 six for parts from the original owners son. It has a high pinion Dana 44 front.

 

That axle is not original to the truck, the only front axles available on the highboy were a low pinion D44, a low pinion D44HD, or a low pinion D60, no high pinions on the F250 until the midyear '77 lowboy.

 

Could be. I'll have to ask him about that.

 

What is the correct term for a 75 Highboy with hub caps on the front with no visible hubs??? I know it's a 3/4 ton 4x4. Is it just full time four wheel drive with the 203 case. I have of the "Free wheeling package" but I thought this was referred to the trucks with hubs???

 

So i can install 37" tires?😏

 

Yes that would be full time. I believe free wheeling package is paint & stripes and has nothing to do with 4x4.

 

It's painful to lose so much of my ignorance in just one thread.

 

This thread is amazing, what a wealth of information. I have my Dad's 67 and have just begun a restoration. I've never done a resto, so I'll have to learn on the fly. F250, 2WD, Custom Cab, 352. I'd love to add a live axle and divorced transfer case to this truck. Anyone have a direction to point me in terms of reading material or 2WD to 4WD conversions?

 

Great thread, so much information. Does anyone know what the payloads for the highboys were?

 

1500 lbs. (3/4 ton) but I have seen highboys with factory overload springs