Correct Redline for '66 L34 tach? - Chevelle Tech
Restoration Corner Where originality comes first.

 1Likes
  • 1 Post By 1966_L78
 
LinkBack Thread Tools Search this Thread Display Modes
post #1 of 11 (permalink) Old Dec 6th, 19, 7:37 PM Thread Starter
 
Join Date: Aug 2019
Location: Hartford, CT
Posts: 15
Garage
Correct Redline for '66 L34 tach?

I'm looking to purchase a knee knocker tachometer for my L34 (360 HP) car. I see a 5200 redline and a 5500 redline and a 7000 tachometer. Which redline is correct? It's a California car with A.I.R./HP designation.

Thanks

Jerry
Jerry Coia is offline  
Sponsored Links
Advertisement
 
post #2 of 11 (permalink) Old Dec 6th, 19, 9:21 PM
Lifetime Premium Member
Tom Lloyd
 
Join Date: Jul 2004
Location: Langley BC (under the overpass in box)
Posts: 4,314
Garage
Re: Correct Redline for '66 L34 tach?

the three you have listed are for :

5200 L35 325 HP and small block.
5600 L34 360 HP
6000 (7000) L78 375 HP.

Tom Lloyd

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

take my advice, I'm not using it.
floyd66 is offline  
post #3 of 11 (permalink) Old Dec 6th, 19, 9:35 PM Thread Starter
 
Join Date: Aug 2019
Location: Hartford, CT
Posts: 15
Garage
Re: Correct Redline for '66 L34 tach?

Thanks Tom. The knee knockers on EBay list a 5200 and a 5500. Are they just interpreted the 5600 incorrectly and they should be advertising the 5600 and not the 5500? It appears that way to me...

Jerry
Jerry Coia is offline  
 
post #4 of 11 (permalink) Old Dec 6th, 19, 9:35 PM
Moderator
 
Join Date: Apr 2006
Location: Far Northern Kommiefornia
Posts: 7,901
Send a message via Yahoo to davewho1
Re: Correct Redline for '66 L34 tach?

The L78 tach is 6200 from what I'm finding, Tom.

This site has answers to a lot of the questions you may come up with, Jerry:

https://www.chevellestuff.net/1966/index.htm

David

1966 Fremont 11A, SS396/L35 coupe - 1 of 66,843
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.


MM/763; A01; A39; A51; D55; M35; N40; U14; U63


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
davewho1 is offline  
post #5 of 11 (permalink) Old Dec 6th, 19, 9:37 PM
Moderator
 
Join Date: Apr 2006
Location: Far Northern Kommiefornia
Posts: 7,901
Send a message via Yahoo to davewho1
Re: Correct Redline for '66 L34 tach?

Quote:
Originally Posted by Jerry Coia View Post
Thanks Tom. The knee knockers on EBay list a 5200 and a 5500. Are they just interpreted the 5600 incorrectly and they should be advertising the 5600 and not the 5500? It appears that way to me...

Jerry
The 5500 is incorrect. Can you post a link? I'd like to see it.

David

1966 Fremont 11A, SS396/L35 coupe - 1 of 66,843
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.


MM/763; A01; A39; A51; D55; M35; N40; U14; U63


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
davewho1 is offline  
post #6 of 11 (permalink) Old Dec 7th, 19, 8:05 AM
Tech Team
Dave
 
Join Date: Sep 2013
Location: OH IO
Posts: 627
Re: Correct Redline for '66 L34 tach?

The original tach in my L34 360 Atlanta car has the 5600 red line on a 7000 face. The L35 325 were on a 6000 face.
25C 70 is offline  
post #7 of 11 (permalink) Old Dec 7th, 19, 12:26 PM
Tech Team
Greg
 
Join Date: Jun 2018
Location: Red Deer Alberta, Canada
Posts: 197
I am interested in what you find, I tossed the tach out of my L34, it quit working years ago, I bought an after market one a couple of years back. Trashed the original one and then the reproduction one quit, so back looking again but if they only last a few years I’m not going to bother.

Life is too short for caring about every bodies else's stuff
Grock-co is offline  
post #8 of 11 (permalink) Old Dec 12th, 19, 3:05 PM Thread Starter
 
Join Date: Aug 2019
Location: Hartford, CT
Posts: 15
Garage
Re: Correct Redline for '66 L34 tach?

I just bought one from Ausley's Corvette. Let's see when I install it in the springtime as the car is in storage now
Jerry Coia is offline  
post #9 of 11 (permalink) Old Dec 12th, 19, 6:24 PM
Senior Tech Team
Keith
 
Join Date: Apr 2004
Location: Hanover Pa
Posts: 7,652
Re: Correct Redline for '66 L34 tach?

the one I bought from Ausleys over ten years ago still works

1966 Chevelle SS 396/360 M21 3:73 posi. silver/blue buckets

Maryland Chevelle Club #682
keithb is offline  
post #10 of 11 (permalink) Old Dec 12th, 19, 7:16 PM
Lifetime Premium Member
 
Join Date: Jun 2003
Location: MN
Posts: 6,490
Re: Correct Redline for '66 L34 tach?

My Original L34 tack. According to thickness of line looks like 5500 to 5700. Gauge
Attached Thumbnails
Click image for larger version

Name:	9B53BFB8-A578-45DE-8391-3869CC507314.jpg
Views:	13
Size:	73.0 KB
ID:	610522  


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.



To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
Jim_66SS is offline  
post #11 of 11 (permalink) Old Dec 13th, 19, 3:01 AM
Lifetime Premium Member
Tony
 
Join Date: Apr 1999
Location: Folsom, CA
Posts: 17,182
Garage
Re: Correct Redline for '66 L34 tach?

Quote:
Originally Posted by davewho1 View Post
The L78 tach is 6200 from what I'm finding...
I disagree... But I think it depends on the way people "look" at it...

My original, mint, unrestored L78 tach (been wrapped in a sock, stored in a box for 30+ years), the "redline" starts right at 6000 RPM...

Now, if one were to look at the center of the redline, even that is at 6100, and the redline ends at 6200 rpm...

Yellow line starts about 5700 rpm, and the yellow is noticeably thicker "paint" than the redline...

The interface between yellow and red is clearly AT 6000 rpm.

I am sure there are production tolerances, but I remember ALL my other tachs were the same (6000 redline for the L78s and 5500 for the L34s, I haven't had an L35 tach personally).
Attached Thumbnails
Click image for larger version

Name:	L78 Tach Redline.jpg
Views:	5
Size:	103.8 KB
ID:	610538  
427L88 likes this.

Once you go RAT, you never go back...
TC #1366

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
Sold

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
Sold
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
&
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
1966_L78 is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Chevelle Tech forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address. Note, you will be sent a confirmation request to this address.

Email Address:
OR

Log-in










Thread Tools Search this Thread
Show Printable Version Show Printable Version
Email this Page Email this Page
Search this Thread:

Advanced Search
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome