So Ive finally saved enough dough to purchase a big power mod for my 97 c5, I was interesed in doing a twin turbo set up but I am afraid I will have to start going into the internals of the motor and up grading the cam, fuel injectors ect,...is there anyone out there that has ran a twin turbo set up on a stock ls1??? The practical thing i saw out there was a procharger kit, I know you cant compare it to a twin turbo set up but im sure that'll due the trick for me, anything with a good 100-150rwhp increase will do, my only concern here is will i have to upgrade the engines internals if im running a procharger kit probaly with about 10psi, also once installed can you use a personal programmer to tune it, or does it need to be tuned up on a dyno?

 

I would look into the SC kits made by A&A Corvette or ECS (forum vendors). They both can set you up with everything you need. Many people here run these kits on stock internals. I have the A&A Vortech kit with stock internals. My RWHP is 532, thats up from about 300RWHP stock. I do have a few other bolt on part also.

Depending on the miles on your car you may want to change out your valve spring with the SC install.

 

I would recommend you take a look at the TTi Twin Turbo Kits for Turbos and of course the ECS supercharger kits if you go the supercharger route.

There are many of these kits being put on stock bottom ends without issue. You can run an easy 550 RWHP on a safe tune. Add an ECS akly kit and you will be on your way.

Phil (RoadRebel) or I can help you out on the TTi stuff and either ECS or I can help you out on an ECS system.

Phil is close to you and could do the install and the tuning for you. I guess I should not speak for him... I feel like his agent...

 

He has a stock '97 LS1. I think making 550rwhp safely is a little optimistic on the LS1 motor. On a LS6, I would agree with you, but not on a LS1. You would have to up the boost too high to be safe in order to get the air flow through the LS1 heads/cam/intake to make that power. I think 500 is a more ralistic and appropriate goal, considereing he just saved enough for a kit, and it doesn't sound like he want to replace an engine.

Also, don't forget to check out the STS twin turbo kit. The kit is easy to install, you dont have to remove/touch/move/alter any of your emmisions components including catalyic converters, etc. to get great results, and the system performs great.

Anyway you go at it, you will be needing to replace the fuel injectors. I also think 10lbs is pushing it on a stock engine in my opinion, but I believe others have done it, but I don't know how safe and reliable that is. If you do your research, you see most poeple, including some tuners, would only recommend 7-8lbs on a stock engine to be safe if there is such a notion with FI. The most important thing is getting a good tune once the system has been installed!! The best thing you can is do your research, ask some of the forum supporting tuners their thoughts, and talk to the peolpe that already have the system that you want to get. Check out my thread of owners to help you out:
http://forums.corvetteforum.com/show....php?t=1587048
You will see we have about a dozen options for FI for our C5's. Good luck, and have fun.

 

You are right... 500-520 is more realistic for that car...

 

Hey Nick, do you want to be added to my owners club thread? Just let me know.

 

I just have a lowly .. TTi X kit.. nothing special...

 

It's OK, we're all loved here. And for some reason, I was thinking your car was more than just the tryical twin turbo Vette.

 

Like the people above me stated you can't go wrong with a forum vendor's kit. I have tun the Paxton kit on my stock block. Kit comes complete. I ran 7 psi. That is the safe margin IMO. There are people running more than that on a stock block. SleepieAce is running 10 psi and things are holding up well. His stock clutch is giving out though. I would stay within the 7 psi limit on a stock block just to be safe. 500+ rwhp is very possible with a 6sp. A4s will dyno a bit lower.

 

Let's not forget, the OP is just looking for 400-450 rwhp (stock plus 100-150).

So either way, the short answer is that unless he has abused the engine, he will be fine whatever way he goes about getting the extra 150 hp. - As long as he has an expert tune the car (and finding one is easy here on CF.c) Just tell the tuner to put a safe tune on it, and everything should be fine at 400 rwhp.


I'm sure everyone will agree that his biggest problem will be:
Going For More.

- Since whatever system he chooses and installs can be easily tweaked (with pullies or controllers, or jets) to produce more than the shortblock can handle. The hardest thing to do will be to resist temptation and leave it alone once the tuner has finished with it.

 

if you are only looking for 150rwhp added, I would look into buying one of the I/C maggie kits for sale in the parts section. with about 4k in blower you could get there. IMO if all you want is 150rwhp a TT kit is way overkill and the basic maggie kit is a rock solid kit for a street 450rwhp car (only good up to about 550rwhp) if you want more than 550rwhp look into other kits.

More Than Zero

 

What will a 550rwhp maggie do in the quarter mile running on drag radials or hoosier slicks? 6 speed.

 

Nah it only put 750 to the wheels...

 

Shorty86s, how mant miles on your 97 C5?

Scotty

 

about 23k its pretty much a stock set up, stage II PCM and gutted out cats, the motors in beautiful condition, rarely do i beat on the thing unless its one of those moments.. as a mustang tries showing you whos boss (key word..."tries") I dont call it my baby for no reason!

 

I'm no expert; but this sound like the perfect application for a dry nitrous setup to me. - Maybe right on the border of needing a wet system though. An IC Maggie at the absolute most ( You DO know that you need a new hood for a maggie, Right shorty86?) Either way, I find myself in the familiar teritory of agreeing with what MTO said. A TT setup does not sound like what you aer looking for.