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

Help With Engine I.D.

Thread Tools
 
Search this Thread
 
Old Sep 23, 2003 | 03:53 AM
  #1  
Viken's Avatar
Viken
Thread Starter
Advanced
 
Joined: Aug 2003
Posts: 71
Likes: 0
From: Kailua Hawaii
Default Help With Engine I.D.

Okay, the car is an L48 1980, but the block stamping doesn't match. I've tried many places figure out what block it is, but no where seems to have a total match. I've narrowed it to '69 - '77, 2bc - 4bc, 2-bolt or 4-bolt. Yeah, I really haven't found much. :confused:
Here are the numbers that I've been able to read off of the block. I'm certain on the rear casting number, but the other two are difficult to read. I'm sure about the CMJ on the last one. I'd really appreciate it if someone could offer some clarification here, thanks.

Rear pad -
3970014
Front pad -
404821
10917CMJ

The story goes, my dad bought this vette a while back. I'm not sure where he got it from that it was an L82, but i recently checked the vin and it's not an L82. I've been buying L82 parts for a long time (according to the local autoparts stores), and haven't had any problems. Quite an embarrasing predicament. :(
Reply
Old Sep 23, 2003 | 07:09 AM
  #2  
doopsvette's Avatar
doopsvette
Instructor
15 Year Member
 
Joined: Sep 2003
Posts: 184
Likes: 0
From: boulder wa
Default Re: Help With Engine I.D. (Viken)

3970014 in corvette restoration guide is a 350 late 72 and early 73 cant find other numbers but will look about
Reply
Old Sep 23, 2003 | 08:10 AM
  #3  
Tom73's Avatar
Tom73
Race Director
25 Year Member
Active Streak: 120 Days
All Eyes On Me
Liked
 
Joined: Apr 1999
Posts: 15,127
Likes: 476
From: NM
Default Re: Help With Engine I.D. (Viken)

The block casting # is for a 350ci that was produced from 70-76. The CMJ suffix was used twice; first in 1974 as a 350ci in the full size Chevy and second in 1980 as a 305 in the full size Chevy and in the Camaro.

So since that block was only produced 70-76 that would rule out the '80 305. So would say you have a 1974 350 out of a full size Chevy.

tom...
Reply
Old Sep 23, 2003 | 09:21 PM
  #4  
Viken's Avatar
Viken
Thread Starter
Advanced
 
Joined: Aug 2003
Posts: 71
Likes: 0
From: Kailua Hawaii
Default Re: Help With Engine I.D. (Tom73)

Hmmm... interesting... thanks for the info Tom, I owe ya.

Appreciate the look out, doop... :chevy


[Modified by Viken, 4:22 PM 9/23/2003]
Reply

Get notified of new replies

To Help With Engine I.D.





All times are GMT -4. The time now is 12:34 AM.

story-0
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-1
2027 Corvette vs The World: Every Model vs Closest Competitor

Slideshow: 2027 Corvette lineup vs the world.

By Joe Kucinski | 2026-04-20 17:58:41


VIEW MORE
story-2
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
story-3
5 MOST and 5 LEAST Popular Corvette Model Years in History!

Slideshow: 5 most and least popular Corvette model years.

By Joe Kucinski | 2026-04-08 13:25:01


VIEW MORE
story-4
2027 Corvette Buyer's Guide: Everything You Need to Know!

Slideshow: 2027 Corvette buyer's guide

By Joe Kucinski | 2026-04-17 16:41:08


VIEW MORE
story-5
10 Things C8 Corvette Owners Hate (But Won't Tell You)

Slideshow: 10 things C8 Corvette owners hate, but won't tell you.

By Joe Kucinski | 2026-04-01 18:36:07


VIEW MORE
story-6
10 Best Corvettes Coming to Barrett-Jackson Palm Beach 2026!

Slideshow: Should you add one of these incredible Corvettes to your garage?

By Brett Foote | 2026-04-01 18:14:05


VIEW MORE
story-7
Every Corvette Grand Sport Explained! (C2, C4, C6, C7, & C8)

Slideshow: Every Corvette Grand Sport explained

By Joe Kucinski | 2026-03-26 07:13:44


VIEW MORE
story-8
Grand Sport & Grand Sport X Launch Alongside All-New 535hp LS6 V8!

Slideshow: Breaking down the 2027 Grand Sport, Grand Sport X, Stingray, and LS6 V8.

By Michael S. Palmer | 2026-03-26 13:48:45


VIEW MORE
story-9
5 Reasons Bad Drivers Crash & 5 Ways to Avoid a Costly Mistake!

Slideshow: 5 reasons bad drivers crash sports cars & 5 ways to avoid a costly shame!

By Joe Kucinski | 2026-03-25 16:32:55


VIEW MORE