CorvetteForum - Chevrolet Corvette Forum Discussion

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

68 vette???

Thread Tools
 
Search this Thread
 
Old Jan 19, 2008 | 12:51 PM
Share
  #1  
1/4 Mile's Avatar
1/4 Mile
Thread Starter
Intermediate
 
Joined: Dec 2007
Posts: 35
Likes: 0
From: Williamsburg IA
Default 68 vette???
Just a quick question. A friend of mine has a 68 vette. We are trying to see what motor came in this. We believe it is a 427, but are not real sure. What do we need to look for to know for sure.

thanks
Reply
0
Old Jan 19, 2008 | 12:59 PM
Share
  #2  
parkerracing's Avatar
parkerracing
Safety Car
10 Year Member
 
Joined: Sep 2003
Posts: 4,206
Likes: 8
From: Belmar NJ
Default
Are you trying to identify the motor in it now? Or is there a SB or no motor in it? /:\
Reply
0
Old Jan 19, 2008 | 01:14 PM
Share
  #3  
1/4 Mile's Avatar
1/4 Mile
Thread Starter
Intermediate
 
Joined: Dec 2007
Posts: 35
Likes: 0
From: Williamsburg IA
Default
It has a S.B in it now. But it is not the original motor.
Reply
0
Old Jan 19, 2008 | 03:30 PM
Share
  #4  
Road-Race Vette's Avatar
0Road-Race Vette
Former Vendor
 
Joined: Oct 2007
Posts: 2,092
Likes: 2
From: walpole ma
Default
one quick way assuming the gauges are original is to look at the tach redline. If the yellow goes from 5400 to 5600 it is 427 390 or 400hp.If it has a very high 6500 redline then it is 435hp 427.anything else it is a small block car. There are other driveline differences (rear end caps ,fuel line etc.) but the tach is a quick way
Reply
0
Old Jan 20, 2008 | 07:17 PM
Share
  #5  
1/4 Mile's Avatar
1/4 Mile
Thread Starter
Intermediate
 
Joined: Dec 2007
Posts: 35
Likes: 0
From: Williamsburg IA
Default
He dropped the tank and found the build sheet today. It is a 427 car, not sure if it is 390 hp, or 400 hp. Some discrepancy on whether which one it was.
Reply
0
Old Jan 20, 2008 | 09:28 PM
Share
  #6  
RHD '68 L89's Avatar
RHD '68 L89
Drifting
15 Year Member
 
Joined: May 2003
Posts: 1,634
Likes: 2
From: Melbourne, Victoria, Australia, the World
Default
Originally Posted by 1/4 Mile
He dropped the tank and found the build sheet today. It is a 427 car, not sure if it is 390 hp, or 400 hp. Some discrepancy on whether which one it was.
The build sheet may list 390HP L36 with an "upgrade" to 400hp L68.
Look at the fuel lines, the tripower had only one from the tank while the Qjet had a return line as well. Tacho redline will be the same for both motors.
Reply
0
Old Jan 20, 2008 | 10:46 PM
Share
  #7  
427SIXPACK's Avatar
427SIXPACK
Le Mans Master
Supporting Lifetime Gold
20 Year Member
Community Influencer
Shutterbug
Top Answer: 5
 
Joined: Nov 2001
Posts: 8,721
Likes: 1,898
From: LONG ISLAND
2025 C3 ('68-'73) of the Year Finalist - Unmodified
2024 C3 of the Year Finalist - Unmodified
2023 C3 of the Year Finalist - Unmodified
Default
Originally Posted by RHD '68 L89
The build sheet may list 390HP L36 with an "upgrade" to 400hp L68.Look at the fuel lines, the tripower had only one from the tank while the Qjet had a return line as well. Tacho redline will be the same for both motors.

THATS HOW MINE READS !!!
Reply
0
Old Jan 20, 2008 | 10:58 PM
Share
  #8  
68 NJConv 454's Avatar
68 NJConv 454
Melting Slicks
 
Joined: Jan 2006
Posts: 3,028
Likes: 2
From: North NJ
Default
Originally Posted by Road-Race Vette
one quick way assuming the gauges are original is to look at the tach redline. If the yellow goes from 5400 to 5600 it is 427 390 or 400hp.If it has a very high 6500 redline then it is 435hp 427.anything else it is a small block car. There are other driveline differences (rear end caps ,fuel line etc.) but the tach is a quick way
mine was 6500 but no original engine. Damn Bubba to hell.

Wish I found a tank sticker.
Reply
0
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

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

 Michael S. Palmer
story-1

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

 Joe Kucinski
story-2

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

 Joe Kucinski
story-3

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

 Verdad Gallardo
story-4

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

 Joe Kucinski
story-5

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

 Verdad Gallardo
story-6

Top 10 Corvettes Coming to Mecum Indy 2026!

 Brett Foote
story-7

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

 Michael S. Palmer
story-8

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

 Joe Kucinski
story-9

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

 Michael S. Palmer
Old Jan 21, 2008 | 09:46 AM
Share
  #9  
1/4 Mile's Avatar
1/4 Mile
Thread Starter
Intermediate
 
Joined: Dec 2007
Posts: 35
Likes: 0
From: Williamsburg IA
Default
what will the actual build sheet have on it, if it did come with a tri power?
Reply
0
Old Jan 22, 2008 | 07:22 AM
Share
  #10  
427SIXPACK's Avatar
427SIXPACK
Le Mans Master
Supporting Lifetime Gold
20 Year Member
Community Influencer
Shutterbug
Top Answer: 5
 
Joined: Nov 2001
Posts: 8,721
Likes: 1,898
From: LONG ISLAND
2025 C3 ('68-'73) of the Year Finalist - Unmodified
2024 C3 of the Year Finalist - Unmodified
2023 C3 of the Year Finalist - Unmodified
Default
Originally Posted by 1/4 Mile
what will the actual build sheet have on it, if it did come with a tri power?
It would have the option code L-68 for a 400HP tri - power car or
option code L-71 for a 435HP tri-power car
Reply
0

Get notified of new replies

To 68 vette???

Back to Subforum
C3 General
View Next Unread
Help identify crayon writing under rear deck of '76




Click for Advanced Search
Reply Closed Thread Share
Forum Jump
Trending Topics

All times are GMT -4. The time now is 01:38 PM.

story-0
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-1
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-2
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-3
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-4
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-5
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-6
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-7
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-8
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-9
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