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

help, decode my BB

Thread Tools
 
Search this Thread
 
Old Aug 2, 2009 | 05:52 AM
  #1  
pablito's Avatar
pablito
Thread Starter
Intermediate
 
Joined: Feb 2009
Posts: 38
Likes: 0
Default help, decode my BB

Hi, can you help me to decode my BB in my 70 vette?
my casting number is 14015445, i found that is a 78-90...on the other side the number is f25-2. do you know the exactly date?
the pad engine is T0722XCH, is a good engine? how can i see if is 2 or 4 bolt?
thanks
in the next days i'll see the head number..
Reply
Old Aug 2, 2009 | 09:18 AM
  #2  
Mike Ward's Avatar
Mike Ward
Race Director
10 Year Member
 
Joined: Jul 2001
Posts: 15,892
Likes: 42
Default

I believe that it might be an LS7 crate engine from the early 80s. Very nice find!

Block cast June 25 1982, assembled in Tonawanda NY on July 22.
Reply
Old Aug 2, 2009 | 05:27 PM
  #3  
HamadUP's Avatar
HamadUP
Melting Slicks
Supporting Lifetime
20 Year Member
 
Joined: Jan 2003
Posts: 2,877
Likes: 13
From: Doha
St. Jude Donor '08
Default

14015445 is commonly used in light/medium duty truck engines. To my knowledge, they are the last breed of MkIV, thus they have the least amount of metal in them, I think they are good enough for up to .060 over bore, but cannot handle .100+.
Reply
Old Aug 3, 2009 | 08:18 AM
  #4  
pablito's Avatar
pablito
Thread Starter
Intermediate
 
Joined: Feb 2009
Posts: 38
Likes: 0
Default

thanks, i found this:
http://i82.photobucket.com/albums/j2.../LS-7STATS.jpg
gooood!
Reply
Old Aug 3, 2009 | 08:48 AM
  #5  
Tom73's Avatar
Tom73
Race Director
25 Year Member
Active Streak: 120 Days
All Eyes On Me
Liked
 
Joined: Apr 1999
Posts: 15,135
Likes: 477
From: NM
Default

Originally Posted by pablito
Hi, can you help me to decode my BB in my 70 vette?
my casting number is 14015445, i found that is a 78-90...on the other side the number is f25-2. do you know the exactly date?
the pad engine is T0722XCH, is a good engine? how can i see if is 2 or 4 bolt?
thanks
in the next days i'll see the head number..
14015445 is a 78-90 454.
f 25 2 date code for June 25th, 2 is year so based on above would be 82.
T0722XCH enigne code, T=Towandowa (sp) engine plant, 0722 is assembly date (July 22nd which is in line with the June 25 casting date), and XCH is useage code and I could not find any listing for a big block with the XCH code.

tom...
Reply
Old Aug 3, 2009 | 09:52 AM
  #6  
GREGG-73's Avatar
GREGG-73
Melting Slicks
10 Year Member
 
Joined: Jan 2003
Posts: 2,813
Likes: 1
From: JOPPA MD
Default

Originally Posted by Tom73
14015445 is a 78-90 454.
f 25 2 date code for June 25th, 2 is year so based on above would be 82.
T0722XCH enigne code, T=Towandowa (sp) engine plant, 0722 is assembly date (July 22nd which is in line with the June 25 casting date), and XCH is useage code and I could not find any listing for a big block with the XCH code.

tom...
I could not find a XCH useage code either....and I really tried! All the above fall's in place other than that. Maybe the OP needs to re-check the numbers...just don't know?
Reply
Old Aug 3, 2009 | 09:58 AM
  #7  
Mike Ward's Avatar
Mike Ward
Race Director
10 Year Member
 
Joined: Jul 2001
Posts: 15,892
Likes: 42
Default

XCH code is known to be for over-the-counter LS7 crate engines.
Reply
Old Aug 3, 2009 | 10:06 AM
  #8  
Tom73's Avatar
Tom73
Race Director
25 Year Member
Active Streak: 120 Days
All Eyes On Me
Liked
 
Joined: Apr 1999
Posts: 15,135
Likes: 477
From: NM
Default

Originally Posted by Mike Ward
XCH code is known to be for over-the-counter LS7 crate engines.
Why would a crate engine use a production line code (factory/assembly date/usage code) and not a CE code?

tom...
Reply
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 Aug 3, 2009 | 10:51 AM
  #9  
Mike Ward's Avatar
Mike Ward
Race Director
10 Year Member
 
Joined: Jul 2001
Posts: 15,892
Likes: 42
Default

CE's were short blocks, not complete engines. I believe most recent GM crate engines have a conventional stamp pad ID.
Reply

Get notified of new replies

To help, decode my BB





All times are GMT -4. The time now is 02:28 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