Notices
C5 General General C5 Corvette and C5 Z06 Discussion not covered in Tech

C3 to C5

Thread Tools
 
Search this Thread
 
Old Jan 7, 2009 | 08:51 AM
  #1  
silver74vette's Avatar
silver74vette
Thread Starter
Pro
20 Year Member
All Eyes On Me
Loved
Community Favorite
 
Joined: Mar 2005
Posts: 635
Likes: 118
From: Lakemont, GA
Default C3 to C5

Greetings all, I have played mostly in the C3 area but have moved on from my 74 to a 50th anniversary convertable.

I searched the threads and found info on idle speed for modded engines but not for stock.

My engine idles about 850 rpm and when I shut it down it spins down longer than I am used to and has some valve noise.

I would appreciate some input on if this is normal or not and what some of the stock engines idle at.

Thanks in advance, Chris
Reply
Old Jan 7, 2009 | 10:26 AM
  #2  
capevettes's Avatar
capevettes
CF Community Team
Supporting Lifetime
20 Year Member
Active Streak: 90 Days
Active Streak: 120 Days
Conversation Starter
 
Joined: Oct 2004
Posts: 19,351
Likes: 5,240
From: Cape Cod, Mass.
2025 C6 of the Year Finalist - Unmodified
2025 C8 Z06/7/E-Ray of the Year Finalist - Unmodified
2023 C3 of the Year Finalist - Unmodified
2021 C8 of the Year Finalist Unmodified
2020 Corvette of the Year Finalist (performance mods)
2019 C1 of Year Winner (performance mods)
2017 Corvette of the Year Finalist
2016 C2 of Year
2015 C3 of Year Finalist
Default

Originally Posted by silver74vette
Greetings all, I have played mostly in the C3 area but have moved on from my 74 to a 50th anniversary convertable.

I searched the threads and found info on idle speed for modded engines but not for stock.

My engine idles about 850 rpm and when I shut it down it spins down longer than I am used to and has some valve noise.

I would appreciate some input on if this is normal or not and what some of the stock engines idle at.

Thanks in advance, Chris
850 RPM's at idle is about right for a stock C5. When you shut down the C5 a little stumble is normal. Not what you are used to in the older car. If you are talking about valve noise when cold it is also normal and probably a little piston slap. As long as it goes away when warmed up you're OK.
Reply
Old Jan 7, 2009 | 12:25 PM
  #3  
silver74vette's Avatar
silver74vette
Thread Starter
Pro
20 Year Member
All Eyes On Me
Loved
Community Favorite
 
Joined: Mar 2005
Posts: 635
Likes: 118
From: Lakemont, GA
Default

Thanks for the info, I appreciate the reassurance.
Reply
Old Jan 7, 2009 | 12:53 PM
  #4  
Mikvi's Avatar
Mikvi
Instructor
20 Year Member
 
Joined: Oct 2000
Posts: 198
Likes: 0
From: Pensacola FL
St. Jude Donor '10
Default Been There, Done That

I'm glad you asked the questions. I went from an 82 to an 03 and had the same concerns. I love the 03, but miss the 82, it was so easy to work on. Good luck
Reply
Old Jan 7, 2009 | 04:35 PM
  #5  
BlueDream's Avatar
BlueDream
Safety Car
10 Year Member
 
Joined: Nov 2002
Posts: 4,025
Likes: 2
From: Valdosta GA
Default

Congrats on the 2003 and welcome to the C5 side of the forum.
Reply
Old Jan 7, 2009 | 04:40 PM
  #6  
dougbfresh's Avatar
dougbfresh
Le Mans Master
 
Joined: Nov 2005
Posts: 6,993
Likes: 25
Default

Originally Posted by Mikvi
I'm glad you asked the questions. I went from an 82 to an 03 and had the same concerns. I love the 03, but miss the 82, it was so easy to work on. Good luck

Easier to work on, are you kidding, the 82' I had was the biggest PIA to change the plugs on I ever owned. Only had a dozen heat shields and other assorted junk around the exhaust manifolds.
Reply
Old Jan 7, 2009 | 07:59 PM
  #7  
dobewillie's Avatar
dobewillie
Race Director
 
Joined: Mar 2006
Posts: 10,477
Likes: 4
From: lockport n.y
Default

congrats and welcome
Reply
Old Jan 7, 2009 | 08:07 PM
  #8  
bencini231's Avatar
bencini231
Melting Slicks
15 Year Member
 
Joined: Jun 2007
Posts: 2,263
Likes: 0
From: Paducah Kentucky
Default

Congrats and hope you get the info your looking for.
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

 Joe Kucinski
story-1

Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

 Verdad Gallardo
story-2

Top 10 Corvettes Coming to Mecum Indy 2026!

 Brett Foote
story-3

Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

 Michael S. Palmer
story-4

10 Revolutionary 'Corvette Firsts' Most People Don't Know

 Joe Kucinski
story-5

5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

 Michael S. Palmer
story-6

2027 Corvette vs The World: Every C8 vs Its Closest Competitor

 Joe Kucinski
story-7

10 Most Common Corvette Problems of the Last 20 Years!

 Joe Kucinski
story-8

5 MOST and 5 LEAST Popular Corvette Model Years in History!

 Joe Kucinski
story-9

2027 Corvette Buyer's Guide: Everything You Need to Know!

 Joe Kucinski
Old Jan 7, 2009 | 08:23 PM
  #9  
lil vette's Avatar
lil vette
Melting Slicks
 
Joined: Apr 2007
Posts: 2,916
Likes: 1
From: West Palm Beach Florida
Default

Mine idle's at 650RPM
.
Reply
Old Jan 7, 2009 | 08:28 PM
  #10  
stingraymyway's Avatar
stingraymyway
Race Director
15 Year Member
St. Jude 10 Year Donor
Liked
Loved
 
Joined: May 2007
Posts: 11,334
Likes: 136
From: Out of Site...Out of Mind. Corvette: anything else is just transportation.
St. Jude Donor '09 thru '20
Default

Welcome to the C5 fold.
Too bad you couldn't keep the C3 and have the C5. You know what they say," He who dies with the most toys............"
Reply
Old Jan 7, 2009 | 09:25 PM
  #11  
IMXCITD's Avatar
IMXCITD
Race Director
Supporting Lifetime Gold
25 Year Member
Liked
Loved
Community Favorite
 
Joined: Jan 2001
Posts: 14,999
Likes: 312
From: P-town Baby! Virginia
Default

congrats on the new ride!!
Reply
Old Jan 7, 2009 | 09:38 PM
  #12  
vett79's Avatar
vett79
Racer
10 Year Member
 
Joined: Aug 2000
Posts: 364
Likes: 3
From: Van Wert Ohio
Default

Congrats! You'll enjoy the C5 but like Mikvi I miss the old '79 for the ease of maintainance and being a bit more robust in some areas. I don't think I'll go back unless I can own a '69 roadster and keep my 98.
Enjoy!
Reply
Old Jan 12, 2009 | 02:14 PM
  #13  
silver74vette's Avatar
silver74vette
Thread Starter
Pro
20 Year Member
All Eyes On Me
Loved
Community Favorite
 
Joined: Mar 2005
Posts: 635
Likes: 118
From: Lakemont, GA
Default

Thank you all,

I had to sell the bike and the old Vette to swing the "upgrade" with the domestic chief executive. I really enjoy driving the C5 but nothing is like looking down the hood of the Stingray.

I never had much trouble working under the hood, but the dash is another matter.

Thanks for the warm welcome, Chris
Reply
Old Jan 12, 2009 | 04:30 PM
  #14  
TraceZ's Avatar
TraceZ
Safety Car
Supporting Member
20 Year Member
Liked
Loved
Community Favorite
 
Joined: May 2004
Posts: 4,628
Likes: 397
From: Madison Wi
Default

Is your C5 a stick?

If it is, try holding in the clutch when you shut the engine off. That will get rid of the "death rattle" when the engine stops. It's a known "feature" of the C5.
Reply
Old Jan 12, 2009 | 07:27 PM
  #15  
peter pan's Avatar
peter pan
Life Time NCM #2196
Supporting Lifetime
Veteran: Air Force
20 Year Member
Liked
Community Favorite
 
Joined: Sep 2004
Posts: 82,572
Likes: 1,681
From: Converse TX
Default

congrats on your new C5 and welcome to the mod crew
Reply
Old Jan 12, 2009 | 07:42 PM
  #16  
Big-Red's Avatar
Big-Red
Burning Brakes
Supporting Lifetime
 
Joined: Jun 2006
Posts: 1,118
Likes: 0
From: Chesterfield MO
St. Jude Donor '06-'07-'08-'09-'10,'13-'14
Default

Originally Posted by silver74vette
Thank you all,

I had to sell the bike and the old Vette to swing the "upgrade" with the domestic chief executive. I really enjoy driving the C5 but nothing is like looking down the hood of the Stingray.

I never had much trouble working under the hood, but the dash is another matter.

Thanks for the warm welcome, Chris
I really enjoy driving the C5 but nothing is like looking down the hood of the Stingray.

Put the lights up and look down the hood and fenders, very similar
to the C3 I think. Welcome and have fun with the C5.

Reply
Old Jan 12, 2009 | 10:37 PM
  #17  
Jet-Jock's Avatar
Jet-Jock
Race Director
Supporting Lifetime
10 Year Member
 
Joined: Aug 2003
Posts: 13,421
Likes: 8
From: Lake Mary Florida
Default

Originally Posted by TraceZ
Is your C5 a stick?

If it is, try holding in the clutch when you shut the engine off. That will get rid of the "death rattle" when the engine stops. It's a known "feature" of the C5.
I was going to ask the same thing is it a MN6 model?

If so, put it in Reverse (will only go with the key in the ON position) and holding the clutch in shut it down. It should be fine.

My 6-speed idles 650 rpm with AC on which it always is ON

Last edited by Jet-Jock; Jan 13, 2009 at 01:21 PM.
Reply

Get notified of new replies

To C3 to C5

Old Jan 12, 2009 | 10:47 PM
  #18  
KorbenDallas's Avatar
KorbenDallas
Melting Slicks
15 Year Member
 
Joined: Aug 2000
Posts: 2,900
Likes: 2
From: Green Cove Springs FL
Default

I had an '81 for about a year then bought my C5 and I've had it for 6 years now. I hated to see the C3 go, but man the C5 made up for it!

Enjoy the C5!
Reply
Old Jan 12, 2009 | 10:54 PM
  #19  
versatile's Avatar
versatile
Drifting
 
Joined: Apr 2008
Posts: 1,335
Likes: 0
From: Qualicum Beach British Columbia
Default

Originally Posted by TraceZ
Is your C5 a stick?

If it is, try holding in the clutch when you shut the engine off. That will get rid of the "death rattle" when the engine stops. It's a known "feature" of the C5.
You don't know how glad I am at this moment!
Reply
Old Jan 13, 2009 | 05:18 AM
  #20  
Vetteman Jack's Avatar
Vetteman Jack
Administrator
Supporting Lifetime
Veteran: Navy
St. Jude 20 Year Donor
25 Year Member
Veteran: Reserves
 
Joined: Mar 2001
Posts: 367,680
Likes: 24,667
From: In a parallel universe. Currently own 2014 Stingray Coupe.
C7 of the Year - Modified Finalist 2021
MO Events Coordinator
St. Jude Co-Organizer
St. Jude Donor '03 thru '25
NCM Sinkhole Donor
CI 5, 8 & 11 Veteran
Default

Congrats on moving up to a C5. Hope you enjoy the car.
Reply



All times are GMT -4. The time now is 06:54 PM.

story-0
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-1
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-2
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-3
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-4
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-5
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-6
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-7
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-8
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-9
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