CorvetteForum - Chevrolet Corvette Forum Discussion

C5 Tech Corvette Tech/Performance: LS1 Corvette Technical Info, Internal Engine, External Engine, Tech Topics, Basic Tech, Maintenance, How to Remove & Replace
Sponsored by:
Sponsored by:

Idle Vacuum

Thread Tools
 
Search this Thread
 
Old Sep 27, 2008 | 07:40 PM
Share
  #1  
SCannon's Avatar
SCannon
Thread Starter
Pro
15 Year Member
 
Joined: May 2005
Posts: 710
Likes: 0
From: Northfield Center Ohio
Default Idle Vacuum
I have a 402 with a 242/250 600 lift cam, AFR 225's 11:1 Compression. At 1000 rpm idle im pulling 7 inches of vacuum. Is that too low?
Reply
0
Old Oct 13, 2008 | 12:18 AM
Share
  #2  
SCannon's Avatar
SCannon
Thread Starter
Pro
15 Year Member
 
Joined: May 2005
Posts: 710
Likes: 0
From: Northfield Center Ohio
Default
Bump, anyone?
Reply
0
Old Oct 13, 2008 | 08:19 AM
Share
  #3  
BLOWNBLUEZ06's Avatar
BLOWNBLUEZ06
Tech Contributor
15 Year Member
All Eyes On Me
Photogenic
Liked
 
Joined: Apr 2007
Posts: 10,924
Likes: 78
From: Forney Texas
Default
Too low considering your setup? Possibly. I had a little bit smaller duration cam and was pulling around 12" vacuum. Just make sure you don't have any vacuum leaks. You might be able to play with the idle timing and fueling to gain an inch or two of vacuum.
Reply
0
Old Oct 14, 2008 | 08:38 PM
Share
  #4  
SCannon's Avatar
SCannon
Thread Starter
Pro
15 Year Member
 
Joined: May 2005
Posts: 710
Likes: 0
From: Northfield Center Ohio
Default
I pulled 544 rwhp N/A so its a fairly stout engine..
Reply
0

Get notified of new replies

To Idle Vacuum

Back to Subforum
C5 Tech
View Next Unread
Who has done their own clutch R&R




Click for Advanced Search
Reply Closed Thread Share
Forum Jump
Trending Topics

All times are GMT -4. The time now is 07:07 PM.

story-0
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-1
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE
story-2
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-3
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-4
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-5
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-6
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-7
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-8
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-9
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