Big Let down.....
Thread Starter
Pro
Joined: Oct 2009
Posts: 680
Likes: 24
From: Durham North Carolina
Big Let down.....
Fellas after months of waiting and seeing pretty good reviews/feedback......I had my VMax ported ls3 manifold installed and gained a whopping 1.8 hp! I know dynos read different from day to day and has a million variable, but WTF!
Drifting
Joined: Dec 2012
Posts: 1,717
Likes: 28
From: O'Fallon IL
I would't expect to gain anything unless you have a heavily modded engine or a positive displacement blower behind it. I bought a hand ported one and my expectation was to gain responsiveness...nothing else. This is on a cammed full exhaust ls3.
Race Director
Joined: Oct 2005
Posts: 14,999
Likes: 200
From: Bay Area Ca.
Tune gets ok improvement and response. Going to 4:10 diff also adds performance pleasure.
Cams add some power but also have driveability issues as they get larger along with increase valve train wear and maintenance.
Improving heads along with a cam and other bolt ons can bring good power gains but it is easier just going with a supercharger and getting more power. It can be taken off too easier.
Plus the power is there when you need it and with light throttle drives like stock.
If you want real power go F/I.
Everything else is just small gains.
Your $$'s, spend as you wish.
Cams add some power but also have driveability issues as they get larger along with increase valve train wear and maintenance.
Improving heads along with a cam and other bolt ons can bring good power gains but it is easier just going with a supercharger and getting more power. It can be taken off too easier.
Plus the power is there when you need it and with light throttle drives like stock.
If you want real power go F/I.
Everything else is just small gains.
Your $$'s, spend as you wish.
Last edited by Boomer111; Sep 6, 2014 at 11:09 AM.
Drifting
Joined: Dec 2012
Posts: 1,717
Likes: 28
From: O'Fallon IL
Tune gets ok improvement and response. Going to 4:10 diff also adds performance pleasure.
Cams add some power but also have driveability issues as they get larger along with increase valeve train wear and maintance.
Improving heads along with a cam and other bolt ons can bring good power gains but it is easier just going with a supercharger and getting more power. It can be taken off too easier.
Plus the power is there when you need it and with light throttle drives like stock.
If you want real power go F/I.
Everything else is just small gains.
Your $$'s, spend as you wish.
Cams add some power but also have driveability issues as they get larger along with increase valeve train wear and maintance.
Improving heads along with a cam and other bolt ons can bring good power gains but it is easier just going with a supercharger and getting more power. It can be taken off too easier.
Plus the power is there when you need it and with light throttle drives like stock.
If you want real power go F/I.
Everything else is just small gains.
Your $$'s, spend as you wish.
agreed!
Thread Starter
Pro
Joined: Oct 2009
Posts: 680
Likes: 24
From: Durham North Carolina
I have been debating the blower for the past few months. Uncle Sam sent me on a little journey too and it will be a substantial time frame before I am stateside again. At the moment my brother is car sitting for me.
Melting Slicks
Joined: Nov 2010
Posts: 2,626
Likes: 195
From: On the east coast we drive until we die
Do you have any other mods? The stock LS3 IM isn't as restrictive as the LS2's so a stock/minor bolt-on LS3 probably wont benefit much from it.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
5 Best & 5 Worst Corvette Daily Drivers
Joe Kucinski
The Headlights of Every Corvette Generation Explained
Joe Kucinski
5 Best & 5 Most Overrated Corvette Track Packages of All Time!
Joe Kucinski
Every 2027 Corvette Engine Explained
Joe Kucinski
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette
Verdad Gallardo
10 Ugly Corvettes That We Still Kinda Love
Joe Kucinski
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
Drifting
Joined: Dec 2012
Posts: 1,717
Likes: 28
From: O'Fallon IL
If you want the best price on an ECS kit let me know. I bought mine for an awesome price with a vendor here.
Btw, stay safe wherever you are
