C3 General General C3 Corvette Discussion not covered in Tech
Sponsored by:
Sponsored by:

1969 Big Block Identification

Thread Tools
 
Search this Thread
 
Old Mar 19, 2012 | 10:42 PM
  #1  
itsallme's Avatar
itsallme
Thread Starter
Intermediate
 
Joined: Jan 2011
Posts: 34
Likes: 0
Default 1969 Big Block Identification

Hi All,

I know what you're going to say, this has been asked dozens of times before and I apologise. I have just not been able to find the threads with the advanced search function, google, etc.

My question is this - What are the telltale signs that SUGGEST a 1969 is a big block car?

No points for the obvious one tank sticker, protect-o-plate.

My previous research tells me:

1 tacho redline
2 ID plate on centre console
3 two fuel lines - one return line
4 number of leaf springs

I am looking at a possible L68 with no tank sticker. Numbers match, c3 registry suggests it is, just thought I'd like a checklist of things that would suggest it is a true L68. I know, nothing guarantees it, not even a tank sticker given the counterfeits out there, but the more I can tick off on my laundry list the better.

Appreciate a link if you guys know the previous thread where this has been covered.

For those interested this is the car:

http://www.carsales.com.au/private/d...rice:Min,Max~1

Thanks all.

JC

Last edited by itsallme; Mar 19, 2012 at 10:46 PM.
Reply
Old Mar 20, 2012 | 11:45 AM
  #2  
69 Chevy's Avatar
69 Chevy
Melting Slicks
 
Joined: Aug 2008
Posts: 2,200
Likes: 3
From: Lehigh county Pennsylvania
Default

Half shafts for BB's used straps to hold U-joints vs U-bolts for SB cars.
Reply
Old Mar 20, 2012 | 01:07 PM
  #3  
Easy Mike's Avatar
Easy Mike
Team Owner
Supporting Lifetime
20 Year Member
 
Joined: Jun 2000
Posts: 38,923
Likes: 1,481
From: Southbound
Cruise-In II Veteran
Default

Food for thought: with a $60K asking price, why is there no documentation with this car? Have you contacted the seller?
Reply
Old Mar 20, 2012 | 01:19 PM
  #4  
69VetteFla's Avatar
69VetteFla
Drifting
 
Joined: May 2011
Posts: 1,536
Likes: 1
From: Boca Raton FL
Default

Kind of surprised that they would choose to show a couple of pics with rain on the car
Reply
Old Mar 20, 2012 | 01:38 PM
  #5  
Faster Rat's Avatar
Faster Rat
Melting Slicks
 
Joined: May 2009
Posts: 3,079
Likes: 314
2024 C3 of the Year Finalist - Unmodified
Default

Early build...no side exhausts installed at the factory until late December or early January, if I am not mistaken. What else has been added?

The hood does not fit good...may not be original. Another red flag.

That is a lot of money for an undocumented car. Any previous owners available to verify authenticity?
Reply
Old Mar 20, 2012 | 01:57 PM
  #6  
Easy Mike's Avatar
Easy Mike
Team Owner
Supporting Lifetime
20 Year Member
 
Joined: Jun 2000
Posts: 38,923
Likes: 1,481
From: Southbound
Cruise-In II Veteran
Default

Originally Posted by Faster Rat
...Early build...no side exhausts installed at the factory until late December or early January, if I am not mistaken...
I thought that myself, but wasn't 100% certain of it. This car is an October build.
Reply
Old Mar 20, 2012 | 04:21 PM
  #7  
Faster Rat's Avatar
Faster Rat
Melting Slicks
 
Joined: May 2009
Posts: 3,079
Likes: 314
2024 C3 of the Year Finalist - Unmodified
Default

Originally Posted by itsallme
3 two fuel lines - one return line
That is for any car with a Rochester Q-Jet, SB or BB. An L68 has three Holleys and does not use a return line.
Reply
Old Mar 20, 2012 | 05:52 PM
  #8  
itsallme's Avatar
itsallme
Thread Starter
Intermediate
 
Joined: Jan 2011
Posts: 34
Likes: 0
Default

69 Chevy - thanks I forgot about that one.

Faster rat / Easy Mike - thanks for that, I wasn't aware there were no factory sidepipes on early build 69's. So at least one thing is not original...I will check out the hood too if I head over to that side of the Country to look at it.

Easy Mike - $60K is actually quite good for a highly optioned L68 in this country (Australia). For comparison here are some others we have down under:

L71 for $120K with docs: http://www.carsales.com.au/private/d...rice:Min,Max~1

L71 for $85K with POP: http://www.carsales.com.au/private/d...rice:Min,Max~1

L71 for $65K with no docs: http://www.carsales.com.au/private/d...rice:Min,Max~1

L36 with no docs for $50K: http://gmdownunder.com.au/component/...-big-block/108

SB low horsepower for $42K : http://www.carsales.com.au/private/d...rice:Min,Max~1

Or look here: http://gmdownunder.com.au/

And for dollar comparison 1 AUD buys 1.04 USD so the Aussie dollar is actually more valuable than the US dollar, so we pay big bucks for our vettes...

Anyone have anything else that suggests original big block, or even original L68?
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

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

 Joe Kucinski
story-1

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

 Joe Kucinski
story-2

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

 Verdad Gallardo
story-3

Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

 Joe Kucinski
story-4

Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

 Verdad Gallardo
story-5

Top 10 Corvettes Coming to Mecum Indy 2026!

 Brett Foote
story-6

Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

 Michael S. Palmer
story-7

10 Revolutionary 'Corvette Firsts' Most People Don't Know

 Joe Kucinski
story-8

5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

 Michael S. Palmer
story-9

2027 Corvette vs The World: Every C8 vs Its Closest Competitor

 Joe Kucinski
Old Mar 20, 2012 | 08:44 PM
  #9  
Faster Rat's Avatar
Faster Rat
Melting Slicks
 
Joined: May 2009
Posts: 3,079
Likes: 314
2024 C3 of the Year Finalist - Unmodified
Default

If you decide to go look at it, take a high resolution photo of the engine stamp pad and post it here. If the car is up on a lift, take another photo of the transmission case VIN derivative stamp. If they both look the same and have not been tampered with, you are probably looking at an original drivetrain car.

Big block cars have rear sway bars. They also have larger diameter front sway bars. Probably larger coil springs...but not so sure.

A big block car should have a large copper/brass Harrison radiator, an external aluminum expansion tank on the passenger side fender well, a large plastic fan shroud with a bolted bottom extension and a 7-blade square-tipped fan with the A/C.
Reply

Get notified of new replies

To 1969 Big Block Identification





All times are GMT -4. The time now is 10:37 PM.

story-0
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-1
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-2
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
story-3
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

Slideshow: Ranking the top 10 Corvette engines by torque output.

By Joe Kucinski | 2026-05-05 11:58:09


VIEW MORE
story-4
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

Slideshow: A Corvette pace car nearly matching IndyCar speeds sounds exaggerated, until you look at the numbers.

By Verdad Gallardo | 2026-05-04 20:03:36


VIEW MORE
story-5
Top 10 Corvettes Coming to Mecum Indy 2026!

Among a rather large group of them.

By Brett Foote | 2026-05-04 13:56:44


VIEW MORE
story-6
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

Slideshow: the top 10 things Corvette owners want in the C9 Corvette

By Michael S. Palmer | 2026-04-30 12:41:15


VIEW MORE
story-7
10 Revolutionary 'Corvette Firsts' Most People Don't Know

Slideshow: 10 Important Corvette 'firsts' that every fan should know.

By Joe Kucinski | 2026-04-29 17:02:16


VIEW MORE
story-8
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

Slideshow: Should you buy a 2020-2026 Corvette or wait for 2027?

By Michael S. Palmer | 2026-04-22 10:08:58


VIEW MORE
story-9
2027 Corvette vs The World: Every C8 vs Its Closest Competitor

Slideshow: 2027 Corvette lineup vs the world.

By Joe Kucinski | 2026-04-24 16:12:42


VIEW MORE