Notices
Pre-Power Stroke Diesel (7.3L IDI & 6.9L) Diesel Topics Only

Flywheel Bolt Length

Thread Tools
 
Search this Thread
 
Old Jun 26, 2017 | 09:13 AM
  #1  
pascalhorse's Avatar
pascalhorse
Thread Starter
|
Freshman User
Joined: Aug 2012
Posts: 41
Likes: 0
Flywheel Bolt Length

I have a 1994 F350 7.3l IDIT and am converting it from automatic transmission to manual 5 speed. Have a new single mass flywheel but didn't come with new flywheel to crank bolts. The bolts that attached the flexplate to the crank are too short and are 2" long. I've found that the single mass flywheel bolts are 2 1/8" long and the dual mass flywheel bolts are 2 5/8" long but these bolts are no longer available. If I get the 2 1/8" bolts will they work with this flywheel that I got from the parts store.
 
Reply
Old Jun 26, 2017 | 04:31 PM
  #2  
ifrythings's Avatar
ifrythings
Fleet Mechanic
10 Year Member
Photogenic
Photoriffic
Shutterbug
Joined: Aug 2011
Posts: 1,576
Likes: 262
This is the bolts that came with my smf, you removed the 1"thick spacer on the crank that the faceplate bolts onto?

 
Reply
Old Jun 26, 2017 | 05:04 PM
  #3  
pascalhorse's Avatar
pascalhorse
Thread Starter
|
Freshman User
Joined: Aug 2012
Posts: 41
Likes: 0
Yes, I removed the spacer on the crank and I found a website that has these bolts, thanks for the info.
 
Reply
Old Jun 26, 2017 | 11:12 PM
  #4  
DarkOverCast's Avatar
DarkOverCast
Posting Guru
Joined: May 2015
Posts: 2,036
Likes: 5
The dmf bolts are too long for a smf
 
Reply
Old Jul 3, 2017 | 03:08 PM
  #5  
pascalhorse's Avatar
pascalhorse
Thread Starter
|
Freshman User
Joined: Aug 2012
Posts: 41
Likes: 0
I found new bolts and ordered them but found out today that they are not available. Does anyone have these bolts or know where I can get 9 bolts that I need to get my flywheel installed. They are 3/8" by 2 1/8" like the picture above.
 
Reply
Old Jul 3, 2017 | 03:28 PM
  #6  
ifrythings's Avatar
ifrythings
Fleet Mechanic
10 Year Member
Photogenic
Photoriffic
Shutterbug
Joined: Aug 2011
Posts: 1,576
Likes: 262
I got new ones from a local bolt place as the ones that came with my flywheel stretched and wouldn't torque, just get grade 8 bolts and you'll be fine.
 
Reply
Old Jul 3, 2017 | 03:54 PM
  #7  
pascalhorse's Avatar
pascalhorse
Thread Starter
|
Freshman User
Joined: Aug 2012
Posts: 41
Likes: 0
That works, thanks
 
Reply
Old Jul 3, 2017 | 04:19 PM
  #8  
pascalhorse's Avatar
pascalhorse
Thread Starter
|
Freshman User
Joined: Aug 2012
Posts: 41
Likes: 0
What torque specs did you torque them to
 
Reply
FTE Stories

Ford Trucks for Ford Truck Enthusiasts

story-0

Top 10 Fords at 2026 Carlisle Ford Nationals

 Joe Kucinski
story-1

3 Best / 3 Worst Parts of Modern Ford Ownership

 Brett Foote
story-2

10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches

 Pouria Savadkouei
story-3

Every 2026 Ford Engine Explained

 Brett Foote
story-4

10 Ugly Ford Trucks That We Still Kinda Love

 Joe Kucinski
story-5

10 Things Every Truck Owner NEEDS (2026 Edition)

 Michael S. Palmer
story-6

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

 Verdad Gallardo
story-7

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

 Joe Kucinski
story-8

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

 Brett Foote
story-9

Top 10 Ford Truck Tragedies

 Joe Kucinski
Old Jul 3, 2017 | 08:29 PM
  #9  
DarkOverCast's Avatar
DarkOverCast
Posting Guru
Joined: May 2015
Posts: 2,036
Likes: 5
Originally Posted by ifrythings
I got new ones from a local bolt place as the ones that came with my flywheel stretched and wouldn't torque, just get grade 8 bolts and you'll be fine.
Each to their own but the factory flywheel and pressure plate bolts are grade 12, just like drive shaft bolts, head bolts, injection pump drive gear bolts.

I would try a common bolt to find the length, measure it and find a bolt dealer. There are places that deal just bolts and can get anything in any thread pitch
 
Reply
Old Jul 3, 2017 | 09:04 PM
  #10  
pascalhorse's Avatar
pascalhorse
Thread Starter
|
Freshman User
Joined: Aug 2012
Posts: 41
Likes: 0
thanks for the info
 
Reply
Old Jul 23, 2017 | 08:10 AM
  #11  
pascalhorse's Avatar
pascalhorse
Thread Starter
|
Freshman User
Joined: Aug 2012
Posts: 41
Likes: 0
I finally found the right bolts I needed from Green Sales Company which handles a lot of the discontinued parts for this year Ford F350. I got the clutch in and the transmission installed. I am now having a problem mounting the transmission cross member to the transmission and found the E4OD cross member will not bolt up to the frame which is about 8" to 10" forward of the mounting holes that the E4OD mounted to. Also does anyone know what I will have to do to change the neutral safety switch so that I can start the engine with the ignition key. Also, is there anything that I need to do to the wiring harness or plugs that went to the automatic transmission.
 
Reply
Old Jan 21, 2018 | 09:57 PM
  #12  
Lootenny's Avatar
Lootenny
5th Wheeling
Joined: Nov 2017
Posts: 29
Likes: 0
Can you confirm that the SMF bolts are 3/8" (by what pitch?) X 2.125" long? ARP doesn't list the flywheel application, but if I have the correct specs I'm sure they have them.

I'm planning on replacing the clutch and having the flywheel cut when I put in my ZF S5-42, but I won't have the bolts out to compare until I take the truck off the road and pull the T-19. I'd like to have all the parts ready to go before I do that.

Denny O.
Woodstock IL
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
mr lucky
1987 - 1996 F150 & Larger F-Series Trucks
7
Sep 5, 2022 10:35 AM
Memphis_Sean
Ford Inline Six, 200, 250, 4.9L / 300
2
Nov 15, 2014 10:00 AM
Rocky RaetzIDI
Pre-Power Stroke Diesel (7.3L IDI & 6.9L)
19
Mar 4, 2013 10:26 AM
dhigh45
1973 - 1979 F-100 & Larger F-Series Trucks
1
May 18, 2008 03:51 PM
gustaf-dgm
Big Block V8 - 385 Series (6.1/370, 7.0/429, 7.5/460)
4
Oct 30, 2004 01:19 PM




All times are GMT -5. The time now is 04:15 AM.

story-0
Top 10 Fords at 2026 Carlisle Ford Nationals

Slideshow: Top 10 Fords at 2026 Ford Nationals

By Joe Kucinski | 2026-06-09 11:10:08


VIEW MORE
story-1
3 Best / 3 Worst Parts of Modern Ford Ownership

Based on years of owning multiple modern Ford products.

By Brett Foote | 2026-06-09 10:53:36


VIEW MORE
story-2
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches

SPONSORED: From muddy boots to rain-soaked cargo, these upgrades address some of the most common frustrations Ford truck owners face every day.

By Pouria Savadkouei | 2026-06-08 18:50:34


VIEW MORE
story-3
Every 2026 Ford Engine Explained

Here's everything you need to know about every Ford engine available for the 2026 model year.

By Brett Foote | 2026-06-05 12:58:01


VIEW MORE
story-4
10 Ugly Ford Trucks That We Still Kinda Love

Slideshow: 10 ugly Ford trucks that we still kinda love.

By Joe Kucinski | 2026-06-03 09:51:16


VIEW MORE
story-5
10 Things Every Truck Owner NEEDS (2026 Edition)

Slideshow: the best gifts for dads & grads

By Michael S. Palmer | 2026-06-03 15:43:58


VIEW MORE
story-6
Rezvani's Latest Post-Apocalyptic 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 | 2026-06-03 11:38:36


VIEW MORE
story-7
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-8
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-9
Top 10 Ford Truck Tragedies

Slideshow: Top 10 Ford truck tragedies.

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


VIEW MORE