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

1970 Engine ID Code question

Thread Tools
 
Search this Thread
 
Old Dec 11, 2009 | 05:11 PM
  #1  
taz7nads's Avatar
taz7nads
Thread Starter
Advanced
 
Joined: Jul 2007
Posts: 99
Likes: 1
From: Iowa Park TX
Default 1970 Engine ID Code question

the engine id codes for 1970 include these two:

CRI-454, LS5, 390HP Rochester Qjet, Hydraulic Lifters, T/I, 4 speed

CZU-454, LS5, 390HP Rochester Qjet, Hydraulic Lifters, 4 speed

trying to figure out which one I have, but don't know what the "T/I" designates.
Reply
Old Dec 11, 2009 | 05:21 PM
  #2  
GREGG-73's Avatar
GREGG-73
Melting Slicks
10 Year Member
 
Joined: Jan 2003
Posts: 2,813
Likes: 1
From: JOPPA MD
Default

Transistor Ignition.....
Reply
Old Dec 11, 2009 | 05:45 PM
  #3  
taz7nads's Avatar
taz7nads
Thread Starter
Advanced
 
Joined: Jul 2007
Posts: 99
Likes: 1
From: Iowa Park TX
Default

how would I know if I have/had one? the factory distributor has been replaced with a Mallory dual point, so is there anyway to tell other than finding the engine code itself? If not, where might the engine code be hiding? Thanks to you guys here, I'm slowly but surely learning more about what I've got........
Reply
Old Dec 11, 2009 | 05:57 PM
  #4  
GREGG-73's Avatar
GREGG-73
Melting Slicks
10 Year Member
 
Joined: Jan 2003
Posts: 2,813
Likes: 1
From: JOPPA MD
Default

See the below thread....or search all the threads on the site....


http://forums.corvetteforum.com/c3-g...odes-help.html
Reply
Old Dec 12, 2009 | 08:22 AM
  #5  
Alan 71's Avatar
Alan 71
Team Owner
15 Year Member
Active Streak: 120 Days
Community Influencer
Top Answer: 5
 
Joined: Sep 2006
Posts: 31,173
Likes: 4,250
From: Westminster Maryland
Default

Hi Taz,
As Gregg said you're looking for the engine 3 letter suffix code It's stamped on the flat pad in front of the passenger's side head.This picture is of a small block engine but you'll see something similar. (the 2 groups will be reversed in position)
Good Luck!
Regards,
Alan

Reply
Old Dec 12, 2009 | 11:41 AM
  #6  
joewill's Avatar
joewill
Safety Car
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Sep 2007
Posts: 4,454
Likes: 328
From: Indy Indiana
Default

they did not make a CRI did they? even though it is published?
Reply
Old Dec 12, 2009 | 12:00 PM
  #7  
Solid LT1's Avatar
Solid LT1
Le Mans Master
10 Year Member
 
Joined: Dec 2003
Posts: 5,727
Likes: 38
From: Fremont CA
Default

Look up ahead of the radiator support on drivers side, the amplifier was mounted on the inner fender panel. Here is a quick shot of the K-66 Transistor Ignition Amplifier on my 70 LT-1

Reply

Get notified of new replies

To 1970 Engine ID Code question





All times are GMT -4. The time now is 09:50 AM.

story-0
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-1
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-2
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-3
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-4
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-5
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-6
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-7
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-8
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
story-9
10 Most Common Corvette Problems of the Last 20 Years!

Slideshow: 10 major Corvette problems from the last 20 years.

By Joe Kucinski | 2026-04-14 16:37:05


VIEW MORE