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

Rear Allen Wrench

Thread Tools
 
Search this Thread
 
Old Sep 5, 2005 | 11:50 AM
  #1  
mikey whipreck's Avatar
mikey whipreck
Thread Starter
Melting Slicks
15 Year Member
 
Joined: Jun 2004
Posts: 3,032
Likes: 4
Default Rear Allen Wrench

1985 L98 A4 with the Dana 36 3.07 rear...

I went to add some differential fluid to the rear on my vette, and I couldn't find an Allen wrench to fit the filter plug. I had some too big and some too small...

Does anyone know what size it takes to unscrew that plug?

Thanks in Advance
Reply
Old Sep 5, 2005 | 12:26 PM
  #2  
Corvette Kid's Avatar
Corvette Kid
Large Impressive Member
Supporting Lifetime Gold
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Jul 2003
Posts: 65,811
Likes: 71
From: Good health is merely the slowest possible rate at which one can die
St. Jude Donor '04-'05-'06-'07
Default

I've got an '85 D44 but I'll bet it's the same. Mine's a 3/8" allen drive. In a pinch, take a bolt with that size of head on it, lock a couple of nuts together on the bolt then put the bolt head in the plug and turn it out with a wrench on the nut closest to the bolt head.

Last edited by Corvette Kid; Sep 5, 2005 at 12:30 PM.
Reply
Old Sep 5, 2005 | 12:35 PM
  #3  
mikey whipreck's Avatar
mikey whipreck
Thread Starter
Melting Slicks
15 Year Member
 
Joined: Jun 2004
Posts: 3,032
Likes: 4
Default

That bolt trick is a pretty good idea. If Sears doesn't have that wrench, that's what I'll probably try. thanks.
Reply
Old Sep 5, 2005 | 12:50 PM
  #4  
Aardwolf's Avatar
Aardwolf
Race Director
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Jun 2004
Posts: 13,962
Likes: 708
From: WI
Default

A pipe wrench or channel locks works to.
Reply
Old Sep 5, 2005 | 01:22 PM
  #5  
JimmyS5600's Avatar
JimmyS5600
Melting Slicks
25 Year Member
Active Streak: 90 Days
Active Streak: 120 Days
Top Answer: 1
 
Joined: Mar 2001
Posts: 2,175
Likes: 56
From: Clarence N.Y.
Default

bI usually use a 3/8th socket extension,works well.
Reply
Old Sep 5, 2005 | 02:26 PM
  #6  
Corvette Kid's Avatar
Corvette Kid
Large Impressive Member
Supporting Lifetime Gold
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Jul 2003
Posts: 65,811
Likes: 71
From: Good health is merely the slowest possible rate at which one can die
St. Jude Donor '04-'05-'06-'07
Default

Originally Posted by JimmyS5600
bI usually use a 3/8th socket extension,works well.
True for many vehicles but unless yours is different than all the Vette plugs I've dealt with, these are six sided. Something you could do with a more common tool wasn't difficult enough for these cars!
Reply
Old Sep 5, 2005 | 03:01 PM
  #7  
Midnight 85's Avatar
Midnight 85
Le Mans Master
15 Year Member
 
Joined: May 2004
Posts: 5,866
Likes: 60
From: Hellinois
Finalist 2020 C4 of the Year - Modified
Default

I ran into the same problem the other day while re-filling the trans in my son's S10. The hex in the plug was huge and I tried the bolt with two nuts trick then but the plug was so tight the nuts kept turning. It was late so I went to Auto Zone and they had a set of 3 sockets with different size hex or allen type heads on them, $7.99 and the big one worked like a charm. They had a set for std. and metric.
Reply
Old Sep 5, 2005 | 07:14 PM
  #8  
eschoendorff's Avatar
eschoendorff
Le Mans Master
15 Year Member
 
Joined: Oct 2003
Posts: 7,625
Likes: 4
From: Director of Bands
St. Jude Donor '08
Default

Originally Posted by Midnight 85
I ran into the same problem the other day while re-filling the trans in my son's S10. The hex in the plug was huge and I tried the bolt with two nuts trick then but the plug was so tight the nuts kept turning. It was late so I went to Auto Zone and they had a set of 3 sockets with different size hex or allen type heads on them, $7.99 and the big one worked like a charm. They had a set for std. and metric.
Just what size did "the big one" turn out to be???
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 Sep 5, 2005 | 10:10 PM
  #9  
Midnight 85's Avatar
Midnight 85
Le Mans Master
15 Year Member
 
Joined: May 2004
Posts: 5,866
Likes: 60
From: Hellinois
Finalist 2020 C4 of the Year - Modified
Default

The sizes were 12, 14, & 17. Obviously these are metric. I'm not sure what size mikey needs for the diff. plug.
Reply
Old Sep 5, 2005 | 11:47 PM
  #10  
mikey whipreck's Avatar
mikey whipreck
Thread Starter
Melting Slicks
15 Year Member
 
Joined: Jun 2004
Posts: 3,032
Likes: 4
Default

Originally Posted by Midnight 85
The sizes were 12, 14, & 17. Obviously these are metric. I'm not sure what size mikey needs for the diff. plug.
I had a 12MM and 17MM...

12 was too small and 17 was too big
Reply
Old Sep 6, 2005 | 08:27 AM
  #11  
aboatguy's Avatar
aboatguy
Race Director
15 Year Member
 
Joined: Jan 2005
Posts: 10,641
Likes: 13
From: Slidell Louisiana
Default

Originally Posted by Corvette Kid NC
I've got an '85 D44 but I'll bet it's the same. Mine's a 3/8" allen drive. In a pinch, take a bolt with that size of head on it, lock a couple of nuts together on the bolt then put the bolt head in the plug and turn it out with a wrench on the nut closest to the bolt head.
I just checked the D36 is the shed and it a 3/8" allen just like my D44.
Sometimes I get frustrated by the mix of metric and standard used on these cars!!!
Mike
Reply
Old Sep 6, 2005 | 08:36 AM
  #12  
mikey whipreck's Avatar
mikey whipreck
Thread Starter
Melting Slicks
15 Year Member
 
Joined: Jun 2004
Posts: 3,032
Likes: 4
Default

Originally Posted by aboatguy
I just checked the D36 is the shed and it a 3/8" allen just like my D44.
Sometimes I get frustrated by the mix of metric and standard used on these cars!!!
Mike
Cool, thanks for checking. That's the size I'll pick up then.
Reply
Old Sep 6, 2005 | 10:29 AM
  #13  
Aardwolf's Avatar
Aardwolf
Race Director
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Jun 2004
Posts: 13,962
Likes: 708
From: WI
Default

Sometimes I get frustrated by the mix of metric and standard used on these cars!!!

Same here!
Reply

Get notified of new replies

To Rear Allen Wrench





All times are GMT -4. The time now is 08:02 PM.

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