Notices
1961 - 1966 F-100 & Larger F-Series Trucks Discuss the Slick Sixties Ford Truck

Are the frames the same?

Old Apr 20, 2008 | 06:49 AM
  #1  
Pacdaddy's Avatar
Pacdaddy
Thread Starter
|
Junior User
Joined: Mar 2008
Posts: 92
Likes: 0
From: Smiths Station, Alabama
Are the frames the same?

Are the frames the same for a 1966 F250 and a 1970 F100? I realize suspension components and such are different but I'm talking specifically the frame and any holes pre drilled into the frame at the factory.

Anybody know?

ND?
 
Reply
Old Apr 20, 2008 | 11:18 AM
  #2  
NumberDummy's Avatar
NumberDummy
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
Likes: 785
From: Simi Valley, CA
Club FTE Gold Member
Originally Posted by Pacdaddy
Are the frames the same for a 1966 F250 and a 1970 F100? I realize suspension components and such are different but I'm talking specifically the frame and any holes pre drilled into the frame at the factory. Anybody know? ND?
Different....F250 frames are larger & heavier in construction.

1967 F250: The section modulus is: 3.89"

1970 F100: The section modulus is: 3.06"

Section modulus: Depth of the frame rails.
 
Reply
Old Apr 20, 2008 | 12:18 PM
  #3  
jowilker's Avatar
jowilker
Fleet Owner
25 Year Member
Joined: Jun 1999
Posts: 24,552
Likes: 74
From: Creedmoor, North Carolina
Club FTE Silver Member

Originally Posted by Pacdaddy
Are the frames the same for a 1966 F250 and a 1970 F100? I realize suspension components and such are different but I'm talking specifically the frame and any holes pre drilled into the frame at the factory.

Anybody know?

ND?
For all intents and purposes, they are the same. Anything that will bolt to one will bolt to the other above or below the chassis rails.

No argue with Bills numbers, they will be factual. I'm sure they mean something, just what I'm not sure in the big world of skeems and ideas.


John
 
Reply
Old Apr 20, 2008 | 05:10 PM
  #4  
Pacdaddy's Avatar
Pacdaddy
Thread Starter
|
Junior User
Joined: Mar 2008
Posts: 92
Likes: 0
From: Smiths Station, Alabama
I guess I should advise WHY I asked. I didn't want to to begin with due to the flack I anticipate receiving (and would recieve deservedly so...)

I want to do some modifications to my '66 F250. I'd like to have more of a custom than the standard truck. I'd also like to soften the ride a bit. I have a complete '70 F100 LWB and I am considering removing the body from the F100, restoring and detailing the frame then putting the '66 F250 body on it.

I know many purists are flipping out right now... But my question is WILL this work? Will the '66 F250 body bolt onto the '70 F100 frame?
 
Reply
Old Apr 20, 2008 | 06:06 PM
  #5  
camperspecial65's Avatar
camperspecial65
Postmaster
Joined: Mar 2004
Posts: 4,375
Likes: 5
From: seattle
depth of the frame rails is extremely important...esp. on a 3/4 ton truck or bigger...if you are gonna work it hard...bigger is better in my eyes.


- cs65
 
Reply
Old Apr 20, 2008 | 08:37 PM
  #6  
Pacdaddy's Avatar
Pacdaddy
Thread Starter
|
Junior User
Joined: Mar 2008
Posts: 92
Likes: 0
From: Smiths Station, Alabama
Don't plan on working it hard. Haulin' the cans to the dump is the hardest it'll probably see. Going for the customizing. Just wanting to know if the cab, front sheet metal and bed will bolt onto the F100 frame.
 
Reply
Old Apr 21, 2008 | 06:20 AM
  #7  
jowilker's Avatar
jowilker
Fleet Owner
25 Year Member
Joined: Jun 1999
Posts: 24,552
Likes: 74
From: Creedmoor, North Carolina
Club FTE Silver Member

Pdaddy, You are on the right track, these old 3/4 and 1 ton trucks will beat you to death. If you have a good motor why not move your sheet metal over to a 73-76 with a tranny that you would like to run and get power steering and disc brakes at the same time. I have done this more than once and usually sell parts that I don't use for more than I paid for the donor.


cs65 Please enlighten us, What is "depth of the frame rails is extremely important" in a conversion.

The body parts on top are all the same, and measurements underneath are the same.

thanks


John
 
Reply
Old Apr 21, 2008 | 08:05 AM
  #8  
NumberDummy's Avatar
NumberDummy
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
Likes: 785
From: Simi Valley, CA
Club FTE Gold Member
Originally Posted by jowilker
Pdaddy, You are on the right track, these old 3/4 and 1 ton trucks will beat you to death. If you have a good motor why not move your sheet metal over to a 73-76 with a tranny that you would like to run and get power steering and disc brakes at the same time. I have done this more than once and usually sell parts that I don't use for more than I paid for the donor.

The body parts on top are all the same, and measurements underneath are the same.John
The section modulus (depth of the frame rails) between models of F100's & F250's frames is different.

1965/66 F100 2WD 115" wheelbase: 2.98"

1965/66 F100 2WD 129" wheelbase: 3.71"

1965/66 F100 4WD 129" wheelbase: 4.14"

1965/66 F250 2WD 129" wheelbase: 4.74"

1965/66 F350 132" wheelbase: 5.57"

Not all frames are created equal.
 
Reply
FTE Stories

Ford Trucks for Ford Truck Enthusiasts

story-0

10 Things Every Truck Owner NEEDS (2026 Edition)

 Michael S. Palmer
story-1

Rezvani's Latest Post-Apocalytic Monster Is a Ford F-150 Raptor Underneath

 Verdad Gallardo
story-2

Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer

 Joe Kucinski
story-3

2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)

 Brett Foote
story-4

Top 10 Ford Truck Tragedies

 Joe Kucinski
story-5

AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make

 Brett Foote
story-6

Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!

 Michael S. Palmer
story-7

Ford's 2001 Explorer Sportsman Concept Looks For a New Home

 Verdad Gallardo
story-8

10 Best Ford Truck Engines We Miss the Most!

 Joe Kucinski
story-9

2026 Shelby F-150 Off-Road: Better Than a Raptor R?

 Brett Foote
Old Apr 21, 2008 | 11:46 AM
  #9  
jowilker's Avatar
jowilker
Fleet Owner
25 Year Member
Joined: Jun 1999
Posts: 24,552
Likes: 74
From: Creedmoor, North Carolina
Club FTE Silver Member

OK Bill, Are telling us that the 66 is not a direct bolt up on the 70 chassis.

I surely hope not.


John
 
Reply
Old Apr 21, 2008 | 12:27 PM
  #10  
nsuecondoc's Avatar
nsuecondoc
New User
Joined: Apr 2008
Posts: 8
Likes: 0
Maybe this is my answer too...

Well Pacdaddy,

Maybe my answer is to do both 64 and 70! A 64 body with a later model undercarriage. Looks, performance, modern components, etc. Probably lots of non restorable 64's with crap or no drive train at all and lots of beat up 70's models with good drivetrains and crap sheet metal. Sell off whats left to make up the difference...
 
Reply
Old Apr 21, 2008 | 01:24 PM
  #11  
NumberDummy's Avatar
NumberDummy
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
Likes: 785
From: Simi Valley, CA
Club FTE Gold Member
Originally Posted by jowilker
OK Bill, Are telling us that the 66 is not a direct bolt up on the 70 chassis.

I surely hope not.


John
Nooo...

Of course I'm not saying that...

All I said is...the depth of the frame side rails is different.

What does that have to do with mounting a body?

Nada.
 
Reply
Old Apr 21, 2008 | 03:02 PM
  #12  
camperspecial65's Avatar
camperspecial65
Postmaster
Joined: Mar 2004
Posts: 4,375
Likes: 5
From: seattle
I dunno about you ...but IF Im going through all of this work and am gonna work the pee out of it I want the beefiest frame...I sure dont wanna inadvertantly put a smaller modulus frame under it.
Now knowing what its pourpose is...and knowing the body mounting was similar and it being confirmed theres no difference it doesnt make a difference.
 
Reply
Old Apr 21, 2008 | 04:41 PM
  #13  
Pacdaddy's Avatar
Pacdaddy
Thread Starter
|
Junior User
Joined: Mar 2008
Posts: 92
Likes: 0
From: Smiths Station, Alabama
I appreciate all the help.

SO -- I'd probably be better off selling off the '70 bumpside to an eager buyer and finding a trashed 73 - 76 with a good frame, huh? Did all 73 - 76 models come with power disc brakes, power steering? Heck, while I'm at it I could find one with a/c!
 
Reply
Old Apr 21, 2008 | 06:10 PM
  #14  
jowilker's Avatar
jowilker
Fleet Owner
25 Year Member
Joined: Jun 1999
Posts: 24,552
Likes: 74
From: Creedmoor, North Carolina
Club FTE Silver Member

I believe power discs and steering were standard by 73, but there are a few out there without. Either is easy to spot.

Think in terms of what you want in the end, and look for a donor with that equipment. With a little planning you can find and upgrade your truck to what you want.

Be cautious of all them part numbers, you likely wont find them, because it will be engine, tranny, power steering and brakes that you will be looking at, and not scrapping rust and old mud wondering what part number this or that piece has stamped on it.

John
 
Reply
Old Apr 22, 2008 | 11:25 AM
  #15  
NumberDummy's Avatar
NumberDummy
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
Likes: 785
From: Simi Valley, CA
Club FTE Gold Member
Originally Posted by jowilker
I believe power discs and steering were standard by 73, but there are a few out there without. Either is easy to spot.

Think in terms of what you want in the end, and look for a donor with that equipment. With a little planning you can find and upgrade your truck to what you want.

Be cautious of all them part numbers, you likely wont find them, because it will be engine, tranny, power steering and brakes that you will be looking at, and not scrapping rust and old mud wondering what part number this or that piece has stamped on it.

John
1973/74 F100 2WD's came with disc brakes as standard equipment.

But power disc brakes were optional, so don't be surprised to find a '73/74 without power disc brakes.

1975 was the first year for F100's to have standard equipment power disc brakes.

1973/79: Power steering was an option on all models (and so was the AM radio!).

It was a different era back then. Most ppl bought trucks for work, not for play.

1991 was the first year more ppl bought trucks for pleasure than as work vehicles.

I don't think you'll find one part number on any parts after 1956.

Ford didn't put actual part numbers on parts after that year, only casting or ID numbers were used.

If you need front end parts like kingpins, the casting number is required, because there are several different axles.

One FTE member had a hell of a time with a set of kingpins he bought.

Why? Because 1965 F100/250's use a different axle than 1966/71's do.

1965 F100/250 king pins are one year only.

So are the kingpins used in 1972.

If you don't come up with the casting numbers off those axles = good luck getting the right parts!
 
Reply


Thread Tools
Search this Thread

All times are GMT -5. The time now is 07:37 AM.

story-0
10 Things Every Truck Owner NEEDS (2026 Edition)

Slideshow: the best gifts for dads & grads

By Michael S. Palmer | 2026-06-02 21:45:57


VIEW MORE
story-1
Rezvani's Latest Post-Apocalytic Monster Is a Ford F-150 Raptor Underneath

Slideshow: Called the Fortress, the 850-horsepower pickup combines Raptor underpinnings with military-inspired features, survival equipment, and a starting price of $285,000.

By Verdad Gallardo | 2026-05-30 18:33:59


VIEW MORE
story-2
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer

Slideshow: 10 most expensive Ford trucks ever sold on Bring a Trailer.

By Joe Kucinski | 2026-05-27 16:24:34


VIEW MORE
story-3
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)

Here's everything that has changed for the latest model year.

By Brett Foote | 2026-05-27 16:17:28


VIEW MORE
story-4
Top 10 Ford Truck Tragedies

Slideshow: Top 10 Ford truck tragedies.

By Joe Kucinski | 2026-05-18 19:34:33


VIEW MORE
story-5
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make

And it might be even better than that.

By Brett Foote | 2026-05-18 19:26:42


VIEW MORE
story-6
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!

Slideshow: Does lowering an F-150 Lobo RUIN the ride quality?

By Michael S. Palmer | 2026-05-18 19:20:37


VIEW MORE
story-7
Ford's 2001 Explorer Sportsman Concept Looks For a New Home

Slideshow: Ford's bizarre fishing-themed Explorer concept has resurfaced after spending decades largely forgotten.

By Verdad Gallardo | 2026-05-12 18:07:46


VIEW MORE
story-8
10 Best Ford Truck Engines We Miss the Most!

Slideshow: The 10 best Ford truck engines we miss the most.

By Joe Kucinski | 2026-05-12 13:09:47


VIEW MORE
story-9
2026 Shelby F-150 Off-Road: Better Than a Raptor R?

Slideshow: first look at the 810 hp 2026 Shelby F-150 Off-Road!

By Brett Foote | 2026-05-12 12:50:07


VIEW MORE