400+ hp ls1
Thread Starter
Teching In
Joined: Apr 2012
Posts: 19
Likes: 0
From: Charlotte, NC
400+ hp ls1 Hi guys. I have a 1999 Trans Am and I wanted to get some input from you guys of what you would do if you wanted over 400 HP to the wheels. Here is my dyno sheet and tell me what you think. It has a full 3" catback exhaust from Kooks Custom Headers along with American Racing stainless steel headers and an SLP Intake Lid that does not fit properly. I have a 00-02 Lid. All of this work was done before I bought my car. Please reply. I have a low budget since I am in school. But all of the work will be done by myself. Thanks
Budget? I'd do suspension mods and good soft tires to harness the power you have now. Add a converter if you have an auto. None of it will help with power. A converter will actually cost you power, but they will help the car to run quicker.
Trending Topics
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?
Pouria Savadkouei
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
TECH Enthusiast
Joined: Nov 2012
Posts: 555
Likes: 0
From: NearHouston, TX
Oh man, if you can do work yourself then install cam and port the 241 heads (upgrade rocker arms and push rod parts as the budget allows), port TB and get a SLP MAF and install a LS6 intake and a cheap BBK underdrive pulley. If you know how to tune, that is great but you'd probably want someone to dyno tune it since you'd want to know the rwhp anyway - that isn't cheap (by my standards) unless you can get a deal somewhere. That would put you over 400rwhp on a budget, I know because I'm' there now
A good cam-only set-up will make 400rwhp+ all day long with your simple modifications.
Depending on how you want it to run and drive, idle quality, and where you want your power to be made will determine the cam that needs to be used with your set-up.
Depending on how you want it to run and drive, idle quality, and where you want your power to be made will determine the cam that needs to be used with your set-up.
Last edited by Sales@Tick; Dec 23, 2012 at 10:24 PM.
If you want 50+hp cam only increase, I might check out the specs of those cams, first, and consider whether you'll want to drive the car that way, full time.
I don't want to go against those who have more experience than me, but I prefer an engine with components that match better....like the LS6 intake, or heads that flow more.
Also, if you've got stock injectors (26.3), you should be well over your 80% duty cycle @ 400rwhp...yes?
I don't want to go against those who have more experience than me, but I prefer an engine with components that match better....like the LS6 intake, or heads that flow more.
Also, if you've got stock injectors (26.3), you should be well over your 80% duty cycle @ 400rwhp...yes?
Launching!
Joined: Jul 2009
Posts: 221
Likes: 0
From: Colorado
Good point on dyno but I've always stuck to one dyno so that works for me. I can see what mods gained what power, my cam gained me 42 hp on my dyno and it's a tad smaller than the tv2.
Op if you want 400+ hp get heads cam intake and you won't have to worry about just grazing past 400hp.
Also injectors are a must, my cam makes my injector duty cycle sit at 85% no bueno for adding more powa
Op if you want 400+ hp get heads cam intake and you won't have to worry about just grazing past 400hp.
Also injectors are a must, my cam makes my injector duty cycle sit at 85% no bueno for adding more powa
Thread Starter
Teching In
Joined: Apr 2012
Posts: 19
Likes: 0
From: Charlotte, NC
Thanks for the input. Would you guys recommend a LS6 intake manifold or a FAST 92mm Intake? This is the first time I am going to be doing performance. Normally my father and I rebuild cars to factory, but I know now that performance things are a whole different story. Thank you for the help
Thanks for the input. Would you guys recommend a LS6 intake manifold or a FAST 92mm Intake? This is the first time I am going to be doing performance. Normally my father and I rebuild cars to factory, but I know now that performance things are a whole different story. Thank you for the help
I only recommend the Fast intake for guys that want to make over 460rwhp and already have H/C or are going to be installing H/C and want higher than 460rwhp. It's not needed unless you're wanting to squeeze every last ounce of power out of the set-up. They also don't add any RPM to the operating range contrary to popular belief as the runner length is nearly identical to a stock intake.
