C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette
Sponsored by:
Sponsored by:

1981 Frame

Thread Tools
 
Search this Thread
 
Old Nov 27, 2007 | 09:24 PM
  #1  
Tony24's Avatar
Tony24
Thread Starter
Instructor
 
Joined: Nov 2007
Posts: 163
Likes: 0
From: Sugarland Texas
Default 1981 Frame

Have a 69, 76, 78 and 81. Are the frames the same on all four? If they are, does anyone have a frame diagram with measurements they could post. I really need one for the 81. I bought it wrecked (not bad), it ran up under something. My problem is the power steering pully is touching the front cross member. I do not know if the frame is bent a little or if the motor moved a bit.
Would appreciate any advice.

Thanks,

Tony in Houston, TX
Reply
Old Nov 27, 2007 | 10:41 PM
  #2  
joehalford01's Avatar
joehalford01
Racer
10 Year Member
 
Joined: Jul 2007
Posts: 311
Likes: 0
From: Visalia CA
Default

the later frames are different but only by a little i believe. The biggest difference is going to be the tranny crossmember. The later years only have one indent for the single exhaust, earlier years had two holes for dual exhaust to pass through.
Reply
Old Nov 27, 2007 | 10:42 PM
  #3  
72LS1Vette's Avatar
72LS1Vette
Safety Car
20 Year Member
 
Joined: Aug 2001
Posts: 4,883
Likes: 11
From: North Easton Mass
Default

Originally Posted by Tony24
Have a 69, 76, 78 and 81. Are the frames the same on all four? If they are, does anyone have a frame diagram with measurements they could post. I really need one for the 81. I bought it wrecked (not bad), it ran up under something. My problem is the power steering pully is touching the front cross member. I do not know if the frame is bent a little or if the motor moved a bit.
Would appreciate any advice.

Thanks,

Tony in Houston, TX
76 and 78 should be the same. 69 has a different rear section and different body mount height. I think the 81 has the aluminum rear differential section and may have frame differences to accomodate that. Check BarryK's website. He used to have frame diagrams posted there. The good thing is higher production numbers for later year Vettes means more reasonably priced frames are available.



Rick B.
Reply
Old Nov 27, 2007 | 10:55 PM
  #4  
SIXFOOTER's Avatar
SIXFOOTER
Le Mans Master
Supporting Lifetime Gold
10 Year Member
 
Joined: Jan 2006
Posts: 9,192
Likes: 27
From: Boca Raton Florida
Default

81 frame dimensions;


Frame Checking Proceedure

Last edited by SIXFOOTER; Nov 27, 2007 at 11:01 PM.
Reply
Old Nov 27, 2007 | 11:09 PM
  #5  
71rdster's Avatar
71rdster
Drifting
10 Year Member
 
Joined: Jul 2005
Posts: 1,562
Likes: 2
From: Spring Texas
Default

These guys are in Houston and may be able to help with a replacement frame, or in getting your frame straightened if it is salvageable.

http://www.gulfcoastcorvette.com/arm.htm

Uptmors Corvette Parts in the Waco area (an Ebay store) sells frames for reasonable prices, and are close to minimize freight cost.
Reply
Old Nov 28, 2007 | 12:28 AM
  #6  
Aggitated Monkey's Avatar
Aggitated Monkey
Drifting
10 Year Member
 
Joined: Sep 2007
Posts: 1,572
Likes: 51
From: Wichita Kansas
Default

Originally Posted by Tony24
I bought it wrecked (not bad), it ran up under something. My problem is the power steering pully is touching the front cross member. I do not know if the frame is bent a little or if the motor moved a bit. :
Was the engine hit from the top maybe pushing it down. If so you may have bent an engine mount horn. Take a look at the frame dimention post and you will see the mount horn I'm speaking of.
Reply
Old Nov 28, 2007 | 08:55 PM
  #7  
Tony24's Avatar
Tony24
Thread Starter
Instructor
 
Joined: Nov 2007
Posts: 163
Likes: 0
From: Sugarland Texas
Default Thanks,

Thank's everyone, the information is very helpful. The rest is left up to me.

Thanks again,


Tony
Reply
Old Nov 28, 2007 | 08:59 PM
  #8  
Artsvette73's Avatar
Artsvette73
Drifting
 
Joined: Jan 2004
Posts: 1,991
Likes: 3
From: Piscataway NJ
Default

Here is more information

http://www.71corvette.com/frames.html
Reply

Get notified of new replies

To 1981 Frame

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




All times are GMT -4. The time now is 02:05 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