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

Timing mark question

Thread Tools
 
Search this Thread
 
Old Sep 7, 2013 | 05:56 PM
  #1  
Blue73Shark's Avatar
Blue73Shark
Thread Starter
Burning Brakes
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Sep 2005
Posts: 1,049
Likes: 205
From: Lewes Delaware
Default Timing mark question

Stock 73, L82, 4 speed, Rochester Qjet, A/C
I am following Lars' paper on setting timing. Dwell is set to 30 degrees. I have an adjustable timing light dialed in to 36 degrees. Refer to the picture below showing the timing line on the harmonic balancer (opposite the 8) and the timing plate. The engine was stopped. My question: when checking the timing at 36 degrees and 2500 RPM ("all in"), what notch (or where) should the timing line be at? Thanks. Fran

Reply
Old Sep 7, 2013 | 06:20 PM
  #2  
BKbroiler's Avatar
BKbroiler
Le Mans Master
20 Year Member
Liked
Loved
Community Favorite
 
Joined: May 2002
Posts: 5,084
Likes: 786
From: Lebanon Township New Jersey
Default

It should be at 0 with a dial back light set to 36 deg when your mech advance is all in and vac advance is disconnected.
Reply
Old Sep 7, 2013 | 08:41 PM
  #3  
procketus's Avatar
procketus
Burning Brakes
15 Year Member
Photogenic
Photoriffic
Liked
 
Joined: Sep 2009
Posts: 1,003
Likes: 48
From: hickory NC
C4 of Year Finalist (appearance mods) 2019
2017 C4 of Year Finalist
Default

The notch across from that hole.
Reply
Old Sep 7, 2013 | 10:51 PM
  #4  
scottyp99's Avatar
scottyp99
Le Mans Master
15 Year Member
 
Joined: Mar 2008
Posts: 5,948
Likes: 72
From: Oxford MA-----You just lost the game!!!!
Default

See that really big notch, with the zero next to it? That's the one. The dial-back timing light uses magic to show the timing mark at zero, when it's really at 36 degrees (if you have it set at 36 degrees, anyway) it's really a very clever little contraption!

Scott
Reply
Old Sep 8, 2013 | 06:40 AM
  #5  
Blue73Shark's Avatar
Blue73Shark
Thread Starter
Burning Brakes
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Sep 2005
Posts: 1,049
Likes: 205
From: Lewes Delaware
Default

Thanks all, big help.
Fran
Reply

Get notified of new replies

To Timing mark question





All times are GMT -4. The time now is 08:57 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