Forced Induction Superchargers | Turbochargers | Intercoolers

How much boost for me?

Thread Tools
 
Search this Thread
 
Old Feb 16, 2016 | 04:52 PM
  #1  
newschool72's Avatar
Thread Starter
TECH Fanatic
10 Year Member
iTrader: (12)
 
Joined: Feb 2011
Posts: 1,863
Likes: 11
From: georgia
Default How much boost for me?

Ok , I knew my brain would get in the way of this simple, low boost turbo set up Ive been planning, .
My dynamic compression is 8.82....static is 10.7. Im building a single turbo, BLOW-THROUGH CARB set-up without an inner cooler, but with water-meth. I want to safely (somewhat) run between 6 and 8 lbs of boost. Do I have to change out my cam and lower my dynamic to live with my low boost plan? What is my dynamic/boosted/effective compression ratio?
Reply
Old Feb 16, 2016 | 05:42 PM
  #2  
oscs's Avatar
8 Second Club
iTrader: (19)
 
Joined: Jan 2013
Posts: 3,903
Likes: 6
From: Cypress, TX
Default

All of it
Reply
Old Feb 16, 2016 | 05:44 PM
  #3  
EarlyZ28!'s Avatar
On The Tree
iTrader: (2)
 
Joined: Sep 2009
Posts: 103
Likes: 0
From: Elgin, South Carolina
Default

No boost for you!
Reply
Old Feb 16, 2016 | 06:56 PM
  #4  
newschool72's Avatar
Thread Starter
TECH Fanatic
10 Year Member
iTrader: (12)
 
Joined: Feb 2011
Posts: 1,863
Likes: 11
From: georgia
Default

Yall aint doin crap for my confidence in this endeavor! LOL. Anyone with some higher level intell on the subject?
Reply
Old Feb 16, 2016 | 07:53 PM
  #5  
EarlyZ28!'s Avatar
On The Tree
iTrader: (2)
 
Joined: Sep 2009
Posts: 103
Likes: 0
From: Elgin, South Carolina
Default

Lol.. Sorry man jus had to! But for real good luck!
Reply
Old Feb 16, 2016 | 08:00 PM
  #6  
EarlyZ28!'s Avatar
On The Tree
iTrader: (2)
 
Joined: Sep 2009
Posts: 103
Likes: 0
From: Elgin, South Carolina
Default

Btw though. Not sure of your cam specs but im runnin a 235/243 with .630 /.610 lift an i was told that runnin a cam of that spec i jus wouldnt get as much power per # of boost as you would with a turbo oriented cam.. Hope that helps you a lil anyways...
Reply
Old Feb 17, 2016 | 09:06 AM
  #7  
newschool72's Avatar
Thread Starter
TECH Fanatic
10 Year Member
iTrader: (12)
 
Joined: Feb 2011
Posts: 1,863
Likes: 11
From: georgia
Default

Originally Posted by EarlyZ28!
Btw though. Not sure of your cam specs but im runnin a 235/243 with .630 /.610 lift an i was told that runnin a cam of that spec i jus wouldnt get as much power per # of boost as you would with a turbo oriented cam.. Hope that helps you a lil anyways...
Check out "DCR revelation" on this board. I think I figured it out,
Reply
Old Feb 17, 2016 | 03:22 PM
  #8  
panic's Avatar
Staging Lane
 
Joined: Feb 2005
Posts: 97
Likes: 2
From: Lynbrook, NY
Default

DCR is only accurate at cranking speed to perhaps 1,500 RPM.
By 3,000 you have nearly your full nominal static CR.
If you don't have at least nominal static CR when your torque curve starts your cam is wayyy too big.
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

6 Gifts Neither Your Dad Nor Grad Will Shove Into the 'Trinket Drawer'

 Brett Foote
story-1

Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

 Pouria Savadkouei
story-2

Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

 Verdad Gallardo
story-3

7 Most Reliable High-Performance Engines GM Has Ever Built

 Verdad Gallardo
story-4

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

 Verdad Gallardo
story-5

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

 Pouria Savadkouei
story-6

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

 Verdad Gallardo
story-7

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-8

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-9

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
Old Feb 17, 2016 | 04:46 PM
  #9  
newschool72's Avatar
Thread Starter
TECH Fanatic
10 Year Member
iTrader: (12)
 
Joined: Feb 2011
Posts: 1,863
Likes: 11
From: georgia
Default

Originally Posted by panic
DCR is only accurate at cranking speed to perhaps 1,500 RPM.
By 3,000 you have nearly your full nominal static CR.
If you don't have at least nominal static CR when your torque curve starts your cam is wayyy too big.
The cam im gonna use is the LS9 with 1.8 rockers.
Reply




All times are GMT -5. The time now is 06:22 AM.

story-0
6 Gifts Neither Your Dad Nor Grad Will Shove Into the 'Trinket Drawer'

Don't get dad new socks or a grill brush this year.

By Brett Foote | 2026-06-09 14:55:56


VIEW MORE
story-1
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

Slideshow: We take a close look at the ONE and Artidiag 800BT2 diagnostic tools from Topdon and the reasons to buy one over the other.

By Pouria Savadkouei | 2026-05-28 11:05:11


VIEW MORE
story-2
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

Slideshow: The controversial Ferrari F6 swaps its original flat-12 for a Corvette Z06-derived LT4 V8 and sends power to four rear wheels through a custom-built drivetrain.

By Verdad Gallardo | 2026-05-26 18:23:54


VIEW MORE
story-3
7 Most Reliable High-Performance Engines GM Has Ever Built

Slideshow:These GM engines didn't just make huge power, they survived abuse, boost, track days, and six-digit mileage with a reputation for refusing to quit.

By Verdad Gallardo | 2026-05-21 16:45:27


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