Forced Induction Superchargers | Turbochargers | Intercoolers

High HP- Boost opinion

Thread Tools
 
Search this Thread
 
Old May 21, 2011 | 08:08 PM
  #1  
LASTLS1's Avatar
Thread Starter
6 Second Club Moderator
iTrader: (7)
 
Joined: Sep 2002
Posts: 3,682
Likes: 0
From: Lombard .IL
Default High HP- Boost opinion

30+ lbs of boost run a vacuum pump or not? I have both set ups. What's the best for the motor? 8000-8500 rpm wet sump.
Reply
Old May 21, 2011 | 08:10 PM
  #2  
Phil99vette's Avatar
7 Second Club
iTrader: (11)
 
Joined: Jul 2002
Posts: 8,758
Likes: 9
From: Port Tobacco, MD
Default

Originally Posted by LASTLS1
30+ lbs of boost run a vacuum pump or not? I have both set ups. What's the best or the motor and hp? 8000-8500 rpm wet sump.
You definitely need a vacuum pump.
Reply
Old May 21, 2011 | 08:13 PM
  #3  
LASTLS1's Avatar
Thread Starter
6 Second Club Moderator
iTrader: (7)
 
Joined: Sep 2002
Posts: 3,682
Likes: 0
From: Lombard .IL
Default

Thanks Phil! I started putting it back together this afternoon. I need to find my notes from the last time we talked over the winter. I can't wait to get it out!
Reply
Old May 21, 2011 | 09:02 PM
  #4  
qqwqeqwrqwqtq's Avatar
FormerVendor
 
Joined: Dec 2001
Posts: 2,444
Likes: 2
From: WWW.SPEEDINC.COM
Default

If you're going to use the vacuum pump lock down the pressure regulator on the pump and regulate it at the valve cover.

As it is now, if you get any oil in the separator it could still pull say, 10in vacuum between the pump and the separator but have 10psi pressure between the separator and engine.

Regulate it at the engine and you won't have that problem.
Reply
Old May 21, 2011 | 11:48 PM
  #5  
LASTLS1's Avatar
Thread Starter
6 Second Club Moderator
iTrader: (7)
 
Joined: Sep 2002
Posts: 3,682
Likes: 0
From: Lombard .IL
Default

I resolved the over flow problem. How much vacuum at wot?
Reply
Old May 22, 2011 | 08:38 AM
  #6  
98Z28CobraKiller's Avatar
Restricted User
iTrader: (17)
 
Joined: Nov 2005
Posts: 5,783
Likes: 5
From: WPB, FL
Default

Why are you guys saying that a vac pump is required? You blowing oil out of the motor?
Reply
Old May 22, 2011 | 07:59 PM
  #7  
LASTLS1's Avatar
Thread Starter
6 Second Club Moderator
iTrader: (7)
 
Joined: Sep 2002
Posts: 3,682
Likes: 0
From: Lombard .IL
Default

Originally Posted by 98Z28CobraKiller
Why are you guys saying that a vac pump is required? You blowing oil out of the motor?
No. But I'm going to turn up the wick and I have both set ups. Catch can is easy but if it helps the motor I'll put the vacuum pump back on. Some have said it's no big deal others say a vac pump is a must!
Reply
Old May 22, 2011 | 09:17 PM
  #8  
Fbodyjunkie06's Avatar
10 Second Club
iTrader: (10)
 
Joined: Mar 2009
Posts: 4,712
Likes: 5
From: Greensboro, NC
Default

I have heard David(mighty mouse) speak of making the breather set-ups work with a lot of boost. I haven't read much into this, does this only occur at high boost levels, or any and all just to a lesser degree?
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

 Verdad Gallardo
story-1

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-2

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-3

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-4

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-5

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-6

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

 Verdad Gallardo
story-7

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

 Verdad Gallardo
story-8

10 Camaros You Should Never Buy

 
story-9

10 LS Engine Myths That Refuse to Die

 Verdad Gallardo
Old May 22, 2011 | 10:41 PM
  #9  
Snyper's Avatar
10 Second Club
iTrader: (27)
 
Joined: Nov 2006
Posts: 1,905
Likes: 0
From: Connecticut
Default

What I was thinking about doing(stop me if its a bad idea) but I have a catch can running to both valve covers and I was going to run a hose from the filter on the turbo to the port on the valley cover(since it has an oil separator) That way it will act like a vacuum pump when in boost..and any excess will go to the ccan.
Reply




All times are GMT -5. The time now is 10:11 AM.

story-0
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-1
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-2
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-3
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-4
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-5
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-6
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE
story-7
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-8
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-9
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE