C1 & C2 Corvettes General C1 Corvette & C2 Corvette Discussion, Technical Info, Performance Upgrades, Project Builds, Restorations

[C2] Alternator Date Code Question

Thread Tools
 
Search this Thread
 
Old Feb 21, 2021 | 04:07 PM
  #1  
Bill66's Avatar
Bill66
Thread Starter
Intermediate
All Eyes On Me
 
Joined: Jan 2021
Posts: 41
Likes: 0
Default Alternator Date Code Question

I have a 66 Vette Block L72 dated 3-18-66.
I am looking at purchasing a 42 AMP 1100696 alternator.
I have a choice of two (2) that are available.
One is dated 6B11 (1966 Feb 11th)
One is dated 6C29 (1966 March 29th)
The car will never go to be judged by NCRS so perfection is not a worry however I would like the alternator to blend in with the engine date.

Which dated AMP would fall in line with the engine date of 3/18/66.
Go with a month earlier date or a date that is a week and a half later?

Appreciate any and all feed back
The car was built May 29th, 1966


L

Last edited by Bill66; Feb 21, 2021 at 04:07 PM.
Reply
Old Feb 21, 2021 | 04:18 PM
  #2  
Powershift's Avatar
Powershift
Race Director
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Apr 2005
Posts: 11,308
Likes: 2,160
From: Bowling Green, Kentucky
Default

Alternator date goes with the car and NOT the engine. Based on that I would select the 6C29 date......... NCRS Judging would okay both.

Larry
Reply
Old Feb 21, 2021 | 04:24 PM
  #3  
Nowhere Man's Avatar
Nowhere Man
Team Owner
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Feb 2003
Posts: 54,180
Likes: 9,474
From: Sitting in his Nowhere land Hanover Pa
2024 C2 of the Year Finalist - Unmodified
2015 C2 of Year Finalist
Default

having a block dated two months prior raises a flag for me. But I am with Larry on this. but typically parts liken the alt is dated about one to two weeks before the cars build date. it was a common unit shared among other chevy cars and trucks.
Reply
Old Feb 21, 2021 | 08:49 PM
  #4  
Bill66's Avatar
Bill66
Thread Starter
Intermediate
All Eyes On Me
 
Joined: Jan 2021
Posts: 41
Likes: 0
Default

Thanks for the info
Reply
Old Feb 21, 2021 | 09:11 PM
  #5  
I'll C2 it's Avatar
I'll C2 it
Racer
 
Joined: Mar 2019
Posts: 438
Likes: 185
From: Auburn Wa
Default

My MARCH 29, 66 car has an L79 block dated C76 (March 7th 66). My alt is dated early March also, I'd have to dig it out for the actual date. You say your car is May and not March?

Last edited by I'll C2 it; Feb 22, 2021 at 04:42 AM.
Reply
Old Feb 21, 2021 | 10:18 PM
  #6  
ettev's Avatar
ettev
Safety Car
Supporting Gold
25 Year Member
Liked
Loved
Top Answer: 5
 
Joined: Mar 2000
Posts: 3,544
Likes: 448
From: Central Pennsylvania
Default

My JE engine build date is C 27 7 (3/27/67) and my 1100696 alternator is dated 7 C 14 (3/14/67).

Last edited by ettev; Feb 21, 2021 at 10:19 PM.
Reply
Old Feb 22, 2021 | 08:14 PM
  #7  
dplotkin's Avatar
dplotkin
Le Mans Master
Supporting Member
10 Year Member
Loved
Community Favorite
 
Joined: Feb 2012
Posts: 5,387
Likes: 2,891
From: Western Massachusetts
2024 C2 of the Year Finalist - Unmodified
2023 C2 of the Year Finalist - Unmodified
2019 C2 of Year Finalist (stock)
2015 C2 of the Year Finalist
Default

I have to believe it would be an epic kick in the nuts to lose some coveted designation over a diode. Glove compartment bulb base composition? Ok. Casting date of the knibbling pin? I get it. But a diode date? That is tough.

Dan
Reply
Old Feb 22, 2021 | 08:23 PM
  #8  
ricks327's Avatar
ricks327
Race Director
20 Year Member
 
Joined: Sep 2005
Posts: 13,903
Likes: 1,876
From: Birmingham Mi
Default

Originally Posted by dplotkin
I have to believe it would be an epic kick in the nuts to lose some coveted designation over a diode. Glove compartment bulb base composition? Ok. Casting date of the knibbling pin? I get it. But a diode date? That is tough.

Dan
When John Pirkle was alive and restoring alternators you got the correct dated diodes. Was he pricey, yes, but he was the cream of the crop.
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

2027 Chevrolet Silverado 1500 First Look: Everything You NEED to Know!

 Michael S. Palmer
story-1

5 Best & 5 Worst Corvette Daily Drivers

 Joe Kucinski
story-2

The Headlights of Every Corvette Generation Explained

 Joe Kucinski
story-3

5 Best & 5 Most Overrated Corvette Track Packages of All Time!

 Joe Kucinski
story-4

Every 2027 Corvette Engine Explained

 Joe Kucinski
story-5

Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette

 Verdad Gallardo
story-6

10 Ugly Corvettes That We Still Kinda Love

 Joe Kucinski
story-7

Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

 Brett Foote
story-8

10 Things Every Corvette Owner Needs (2026 Edition)

 Michael S. Palmer
story-9

8 Most "Only Corvette Owners Understand" Quirks and Problems

 Pouria Savadkouei
Old Feb 22, 2021 | 08:32 PM
  #9  
Bill66's Avatar
Bill66
Thread Starter
Intermediate
All Eyes On Me
 
Joined: Jan 2021
Posts: 41
Likes: 0
Default

Novice here.I do not understand your note...knibbing pin etc .My car is a real nice clean driver which is what I wanted. Bought it to enjoy the road. If I get caught in the rain going to a show I will just keep on driving in it. Unlike trailer queen owners I will not cry. Have no desire to have it checked out by anyone or organization. Just start and go.

My electrical system is fine and works well. I wanted to add some spare parts (jack w/handle, alternator, books/manuals), and small parts/pieces to what I have collected over the years including non Vette 60's cars. The price given to me for the 42 Amp working factory alternators is so low I could not pass them up hence my date question. No rebuilding to be done and do not want any to be done.

Hope this helps.

Bill

Last edited by Bill66; Feb 23, 2021 at 07:36 AM.
Reply
Old Feb 23, 2021 | 10:20 AM
  #10  
dplotkin's Avatar
dplotkin
Le Mans Master
Supporting Member
10 Year Member
Loved
Community Favorite
 
Joined: Feb 2012
Posts: 5,387
Likes: 2,891
From: Western Massachusetts
2024 C2 of the Year Finalist - Unmodified
2023 C2 of the Year Finalist - Unmodified
2019 C2 of Year Finalist (stock)
2015 C2 of the Year Finalist
Default

I have one of his horn relays in my Corvette,

Dan
Reply
Old Feb 23, 2021 | 12:57 PM
  #11  
silver837's Avatar
silver837
Le Mans Master
Supporting Gold
Veteran: Army
Liked
Loved
Community Favorite
 
Joined: Mar 2017
Posts: 5,144
Likes: 1,623
From: Nor- Cal
Default

I got my starter and alt. and correctly dated regulator from John Pirkle. That was close to 20 years ago and all are working fine.

Last edited by silver837; Feb 23, 2021 at 12:59 PM.
Reply

Get notified of new replies

To Alternator Date Code Question





All times are GMT -4. The time now is 06:19 AM.

story-0
2027 Chevrolet Silverado 1500 First Look: Everything You NEED to Know!

Slideshow: Is the 2027 Chevrolet Silverado 1500 the best Silverado yet?

By Michael S. Palmer | 2026-06-16 08:01:12


VIEW MORE
story-1
5 Best & 5 Worst Corvette Daily Drivers

Slideshow: 5 best and 5 worst Corvette daily drivers

By Joe Kucinski | 2026-06-15 10:32:13


VIEW MORE
story-2
The Headlights of Every Corvette Generation Explained

Slideshow: The headlights of every Corvette generation explained

By Joe Kucinski | 2026-06-15 10:17:14


VIEW MORE
story-3
5 Best & 5 Most Overrated Corvette Track Packages of All Time!

Slideshow: The 5 best and 5 most overrated Corvette track packages ever.

By Joe Kucinski | 2026-06-09 12:46:45


VIEW MORE
story-4
Every 2027 Corvette Engine Explained

Slideshow: Every 2027 Corvette engine explained

By Joe Kucinski | 2026-06-09 12:16:31


VIEW MORE
story-5
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette

Slideshow: A Jaguar designer's personal project imagines what a modern front-engined Corvette might look like if Chevrolet revisited the golden age of the Stingray.

By Verdad Gallardo | 2026-06-08 19:53:43


VIEW MORE
story-6
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-7
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-8
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-9
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE