Boosted C6Z advise requested
Thread Starter
Melting Slicks
Joined: Jul 2007
Posts: 2,825
Likes: 24
From: LS MO
Boosted C6Z advise requested
Bought a Procharged C6Z about a month ago, and am looking at making a few changes and am looking for advise.
Car made 565 to the tires when Procharger had it back for a refresh about a year ago. I have no intentions of wanting to up the boost past the 4 lbs it already makes. I want to create a more efficient boosted car.
The car has B&B Fusions on it which I am selling to replace with a set of stock mufflers. After that is done, I was wanting advise on which headers with off road x to use and what recommendation could be made for switching to E85.
Again I do know that boost will drop from the current level with the headers installed, but I will bring that back up to a safe level with a pulley change. Car has been procharged for 14k miles with no issues and I want it to continue this course.
Thanks for any insight.
Car made 565 to the tires when Procharger had it back for a refresh about a year ago. I have no intentions of wanting to up the boost past the 4 lbs it already makes. I want to create a more efficient boosted car.
The car has B&B Fusions on it which I am selling to replace with a set of stock mufflers. After that is done, I was wanting advise on which headers with off road x to use and what recommendation could be made for switching to E85.
Again I do know that boost will drop from the current level with the headers installed, but I will bring that back up to a safe level with a pulley change. Car has been procharged for 14k miles with no issues and I want it to continue this course.
Thanks for any insight.
Thread Starter
Melting Slicks
Joined: Jul 2007
Posts: 2,825
Likes: 24
From: LS MO
Thread Starter
Melting Slicks
Joined: Jul 2007
Posts: 2,825
Likes: 24
From: LS MO
Melting Slicks
Joined: Feb 2006
Posts: 3,191
Likes: 43
From: Scottsdale Az
Thread Starter
Melting Slicks
Joined: Jul 2007
Posts: 2,825
Likes: 24
From: LS MO
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Melting Slicks
Joined: Mar 2002
Posts: 2,880
Likes: 39
From: Austin Texas
Forget the FAST. Also, keep in mind that the stock Fusion is not exactly considered loud as far as exhausts go. I have had stock, Fusion, PRT, and Bullets and the Fusion and OEM mufflers are very similar at idle and cruise. I wanted a slightly louder sound OUTSIDE the car so I Dynamatted my interior to the best of my ability. Love the outcome.
Pro
Joined: Jul 2008
Posts: 604
Likes: 1
From: Little Rock, AR
I think the longer runners from the fast would help with tq down lown and would flow more air in total for higher hp on the big end, but interested in hearing why the FAST would not give better overall results than the stocker? He isn't intersted in raising the boost, so if he is looking for more power why not the FAST?
Pro
Joined: Jul 2008
Posts: 604
Likes: 1
From: Little Rock, AR
Thread Starter
Melting Slicks
Joined: Jul 2007
Posts: 2,825
Likes: 24
From: LS MO
Yep that is where I am going, plus E85.
Pro
Joined: Jul 2008
Posts: 604
Likes: 1
From: Little Rock, AR
[QUOTE=b16gsr;1577677121]I was after 1 phone call. Putting long tubes and off road x will KILL the midrange. I am not interested in that, FAST effectively can do the same.
I find that hard to believe. Good Luck with whatever you decide.
I find that hard to believe. Good Luck with whatever you decide.
Melting Slicks
Joined: Feb 2006
Posts: 3,191
Likes: 43
From: Scottsdale Az
I think the longer runners from the fast would help with tq down lown and would flow more air in total for higher hp on the big end, but interested in hearing why the FAST would not give better overall results than the stocker? He isn't intersted in raising the boost, so if he is looking for more power why not the FAST?
I do however subscribe to the long tubes are good theory. LTs take stress off the motor thus the usual psi drop when adding them. When you pulley down to make up for the pressure loss you pick up pretty good power without as much stress on the motor as just adding more boost.
Pro
Joined: Jul 2008
Posts: 604
Likes: 1
From: Little Rock, AR
Longer runners, maybe may make some difference. Better flow doesn't matter as your blower makes the flow what you want it to be. Want to flow an extra 100cfm? One pulley swap and blamo! The amount of air after the blower will be a finite amount no matter what the "flow" is on your application.
I do however subscribe to the long tubes are good theory. LTs take stress off the motor thus the usual psi drop when adding them. When you pulley down to make up for the pressure loss you pick up pretty good power without as much stress on the motor as just adding more boost.
I do however subscribe to the long tubes are good theory. LTs take stress off the motor thus the usual psi drop when adding them. When you pulley down to make up for the pressure loss you pick up pretty good power without as much stress on the motor as just adding more boost.
Are you saying no matter the constriction on the engine, it would not make more power by removing the constriction because of the amount of air the blower is pushing? He could in essence put on an worse IM than what he has now and make the same power?
What do think would happen if this gentleman does put on a FAST?
Last edited by HoustonSVT; May 22, 2011 at 07:33 AM.
Pro
Joined: Jul 2008
Posts: 604
Likes: 1
From: Little Rock, AR
While I understand the correlation between boost pressure lost when adding LT, the boost lost doesn't mean he would be lossing power. In fact he would make more power at a lower boost. My advice is to add the LT, survey the increase in HP and TQ, and boost lost. Then consider putting a smaller diameter pulley on, but I am quite sure the OP is concerned with the amount of boost he his running on his LS7. I'm going to guess he could run less boost but have >600 rw with the addition of the LT and FAST.
Curious on why the FAST is getting said to be a bad addition to his arsenal? If it is the price of the setup, then that is relative to the person purchasing, but doesn't mean it would not provide a benifit.
Curious on why the FAST is getting said to be a bad addition to his arsenal? If it is the price of the setup, then that is relative to the person purchasing, but doesn't mean it would not provide a benifit.
Le Mans Master
Joined: Jul 2005
Posts: 6,118
Likes: 4
From: Slidell La
Are you saying no matter the constriction on the engine, it would not make more power by removing the constriction because of the amount of air the blower is pushing? He could in essence put on an worse IM than what he has now and make the same power?
What do think would happen if this gentleman does put on a FAST?
What do think would happen if this gentleman does put on a FAST?
What are they $2000 for 10-15whp gain? He could easily add 100whp for $1k if he so chose.