Forced Induction Superchargers | Turbochargers | Intercoolers

compression question

Thread Tools
 
Search this Thread
 
Old Oct 11, 2007 | 10:54 PM
  #1  
Ego Killer's Avatar
Thread Starter
TECH Fanatic
iTrader: (147)
 
Joined: Feb 2003
Posts: 1,067
Likes: 1
From: Tullahoma,Tn
Default compression question

just wondering I have tossed around the idea for a while of doing a 88mm turbo or a procharger f1 on my 408..but the thing is its about 12:1. I know thats to much but what is perfect for this? and whats the most you can get my with?
Reply
Old Oct 11, 2007 | 10:57 PM
  #2  
STALL UP's Avatar
Launching!
iTrader: (2)
 
Joined: May 2005
Posts: 208
Likes: 0
From: north louisiana
Default

My 408 is 9 to 1 but most people go with a 9.5 to 1 ratio with a procharger and even lower with a turbo setup.
Reply
Old Oct 12, 2007 | 12:39 AM
  #3  
njc.corp's Avatar
TECH Resident
 
Joined: Jun 2007
Posts: 952
Likes: 0
Wink

Originally Posted by Ego Killer
just wondering I have tossed around the idea for a while of doing a 88mm turbo or a procharger f1 on my 408..but the thing is its about 12:1. I know thats to much but what is perfect for this? and whats the most you can get my with?



the thing u lefted out is pump fuel or race-fuel?

u will get a lot of help whether u can or not-if u tell us what u want to run-

Last edited by njc.corp; Oct 12, 2007 at 05:23 AM.
Reply
Old Oct 12, 2007 | 02:56 AM
  #4  
menlatin's Avatar
Staging Lane
 
Joined: Jun 2005
Posts: 62
Likes: 0
Default

i'm kind of in a similar boat. I plan on a a turbo for my 10.5:1 iron head 355, but a bit scared of the compression with 91 octane. I plan to run meth, but it'd be nice to be able to get by with just an IC. Its about 430-440 hp motor, so only planned on about 8psi with a t70.

If you don't mind using meth/water injection, i'm sure you can run atleast 15psi with a good tune. I've got a book by A Grahm Bell (not that one) and i remember reading that with 10:1 and meth/water you could typically go up to 25psi.
Reply
Old Oct 12, 2007 | 05:07 AM
  #5  
Slowhawk's Avatar
LS1Tech Sponsor
iTrader: (12)
 
Joined: Nov 2001
Posts: 14,865
Likes: 6
From: Bridgewater,Ma
Default

12-1 is high for a Turbo but I would think 5lbs could be done.
We are actually doing a Supercharger on a NA 12-1 comp 408 soon.The owner wants to try it before we swap the pistons.The plan is to run a dual nozzle meth kit too.
Reply




All times are GMT -5. The time now is 09:13 PM.

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