C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Re: C beam question

Thread Tools
 
Search this Thread
 
Old Jan 22, 2010 | 04:39 PM
  #1  
TJM's Avatar
TJM
Thread Starter
Drifting
15 Year Member
 
Joined: Sep 2002
Posts: 1,642
Likes: 0
From: Suwanee,Ga
Default Re: C beam question

Will a C beam from a 1984 manual shift match up with a ZF and Dana 44?

TJM
Reply
Old Jan 22, 2010 | 04:51 PM
  #2  
James93LT1's Avatar
James93LT1
Drifting
Veteran: Air Force
Veteran: National Guard
20 Year Member
 
Joined: Oct 2004
Posts: 1,477
Likes: 80
From: Hawaii
Default

No, 84 manuals came with a Dana 36. You need a c-beam from a Dana 44.
Reply
Old Jan 22, 2010 | 04:57 PM
  #3  
rodj's Avatar
rodj
Le Mans Master
25 Year Member
 
Joined: Aug 2000
Posts: 8,838
Likes: 31
From: Australia
Default

A 36 beam can aways be redrilled to suit a 44

Bottom of page
http://www.joby.se/corvette/mods/2001-0X11_diff/
Reply
Old Jan 23, 2010 | 10:28 AM
  #4  
TJM's Avatar
TJM
Thread Starter
Drifting
15 Year Member
 
Joined: Sep 2002
Posts: 1,642
Likes: 0
From: Suwanee,Ga
Default

Originally Posted by rodj
A 36 beam can aways be redrilled to suit a 44

Bottom of page
http://www.joby.se/corvette/mods/2001-0X11_diff/

Not that i doubt that, but I had always heard that the hole issue was due to the Auto vs the Manual length?

TJM
Reply
Old Jan 23, 2010 | 10:58 AM
  #5  
toptechx6's Avatar
toptechx6
Safety Car
15 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Jun 2006
Posts: 3,629
Likes: 28
From: FL
Default

Originally Posted by TJM
Not that i doubt that, but I had always heard that the hole issue was due to the Auto vs the Manual length?

TJM
I'm not sure the C beams are actually a different length, it is just that the spacing between the trans and the holes that the diff bolts to are farther apart with the D36 because the snout is shorter than the D44. The difference is not that great, about 7/8" as I recall. Many who have made the swap simply drill two new holes in the C beam closer to the trans that will then line up with the longer snout on the D44.
Reply
Old Jan 23, 2010 | 11:13 AM
  #6  
aboatguy's Avatar
aboatguy
Race Director
15 Year Member
 
Joined: Jan 2005
Posts: 10,641
Likes: 13
From: Slidell Louisiana
Default

C beams are different lengths D44 is a little longer so uses a shorter C beam. I tried to reuse my D36 C beam by drilling new holes but the C beam did not fit flush in the pocket, recess or whatever you want to call the flat areas its supposed to mount on so I sprang for a D44 C beam and overnight shipping IOT have an install I was satisfied with......Your experience/acceptance level may differ.


MIke
Reply
Old Jan 23, 2010 | 11:51 AM
  #7  
TJM's Avatar
TJM
Thread Starter
Drifting
15 Year Member
 
Joined: Sep 2002
Posts: 1,642
Likes: 0
From: Suwanee,Ga
Default

Good points. C beams aren't so rare that I can't get one quick.

It's just the '84 issue. That's the only year the 36 was offered with manual. Most 44 swaps are to automatics?

I have built in too many variables. Looks like a "try it and see" situation when I fit up the motor and transmission?

TJM
Reply
Old Jan 23, 2010 | 02:36 PM
  #8  
toptechx6's Avatar
toptechx6
Safety Car
15 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Jun 2006
Posts: 3,629
Likes: 28
From: FL
Default

Originally Posted by TJM
Good points. C beams aren't so rare that I can't get one quick.

It's just the '84 issue. That's the only year the 36 was offered with manual. Most 44 swaps are to automatics?

I have built in too many variables. Looks like a "try it and see" situation when I fit up the motor and transmission?

TJM
The rear end is the only variable, the C beams are all the same on the trans end, if you get a beam for a D44 it will fit, your D36 beam will not unless you drill it, as aboatguy mentioned fit may leave something to be desired if you choose that alternative.
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

10 Ugly Corvettes That We Still Kinda Love

 Joe Kucinski
story-1

Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

 Brett Foote
story-2

10 Things Every Corvette Owner Needs (2026 Edition)

 Michael S. Palmer
story-3

8 Most "Only Corvette Owners Understand" Quirks and Problems

 Pouria Savadkouei
story-4

10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

 Joe Kucinski
story-5

How Much Horsepower Every Corvette Engine "LOST" in 1972

 Joe Kucinski
story-6

Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

 Michael S. Palmer
story-7

Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

 Joe Kucinski
story-8

150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

 Joe Kucinski
story-9

8 Coolest Corvette Pace Cars (and Replicas) of All Time

 Verdad Gallardo
Old Jan 23, 2010 | 09:09 PM
  #9  
rodj's Avatar
rodj
Le Mans Master
25 Year Member
 
Joined: Aug 2000
Posts: 8,838
Likes: 31
From: Australia
Default

Originally Posted by toptechx6
The rear end is the only variable, the C beams are all the same on the trans end,

The confusion arises because the D44 only ever came with a manual so guys call it a "manual " beam even though fitment is not related to the trans itself

Originally Posted by TJM
I had always heard that the hole issue was due to the Auto vs the Manual length?
As toptechx6 states above only because of the type of diff fitted.Position of the beam mount on trans is exactly the same regardless of whether auto , ZF6 or 4+3 trans
Reply
Old Jan 24, 2010 | 10:24 AM
  #10  
TJM's Avatar
TJM
Thread Starter
Drifting
15 Year Member
 
Joined: Sep 2002
Posts: 1,642
Likes: 0
From: Suwanee,Ga
Default

Originally Posted by rodj

The confusion arises because the D44 only ever came with a manual so guys call it a "manual " beam even though fitment is not related to the trans itself


As toptechx6 states above only because of the type of diff fitted.Position of the beam mount on trans is exactly the same regardless of whether auto , ZF6 or 4+3 trans

Thank you Sir!!

I think I'll just get a "44 Beam" and call it a day.

I am sure there is a tremendous demand for my "36 C Beam"...

Lets see??? scrap aluminum is $0.99 a pound...?


TJM
Reply

Get notified of new replies

To Re: C beam question





All times are GMT -4. The time now is 11:25 AM.

story-0
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-1
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-2
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-3
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE
story-4
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-5
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-6
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-7
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-8
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-9
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE