Isn't 12 PSI a little high for stock internals on an LT1?
Are there any Dyno numbers for one running at around 5 PSI?

 

The 12psi was with meth injection and a good tune. Stock numbers @5psi for the LT1 are 350/390; completely stock. The LT1 can take more boost mainly due to piston design.

 

I don't get why everyone thinks this If this were the case why are there not methanol injection kits everywhere for NA cars? The methanol allows more timing to be run because of it's high octane content, it also adds an itercooling effect. Any car with a turbo that adds an intercooler and runs higher octane gas to run more timing is going to pick up power... Right?!?!?

Bill

 

Trtturbo, no track times?

 

Gotta chime in with my standard "STS, the Powerdyne of turbo kits."

 

I'd like some track times too, with 5 PSI of boost. 12 just seems too high, but then again I don't know jack about this kind of turbo.

 

On these kits, the primary use for the meth is to cool the charge temps.We dont use intercoolers since the charge pipe is exposed to ambient air as well as the turbo running on average 500 degrees cooler. The reason for meth is no matter what, your charge temps are going to raise under more boost. I dont run the meth on my car because I only run 5psi. For the customers who want to raise the boost, we usually set it up so when you flip the switch to raise the boost, you also arm the meth. The meth starts to spray at 4psi. It is wired in with an injector so that it only pulses when the injector pulses.
This way you dont overload the engine with meth.
I dont have any track times yet. My car is a 6speed on stock GSC's so lauch will never be good. I do need to take it out just to see though. The "seatofthepantsmeter" says it should do well.
If any of you are in the Dallas area and want to check it out, just let me know. I would be glad to give you a ride.

 

My son just bought a '94 LT1 car and should have a system on it before too long. Will keep you updated.

 

Sweet.

 

Does the 3600 bucks include install?

 

It does not include install, but I only charge $300.00 for the install. It is that easy. The kits come with very detailed directions. Anyone with average ability can install one in a day with basic tools.

 

12psi was not stock. 12psi was on forged pistons, ls1 rods at the very least, and I've heard mixed wording that it was also a 383 engine.

If you try to tell me a hypo piston and the factory pins can take those forces and I will never believe you. Nitrous on an lt1 I can see, but the heat you're talking about here will crack the pistons, blow ringlands, or heaven forbid destroy the pins. The stock pistons have the ringlands too high for a good boost setup.

If guys are running intercooled superchargers and blowing ringlands at 8psi, 12psi is asking for trouble. Methanol helps to advance timing and deter detonation, but there is a point where the heat alone is going to start causing problems.

The STS kit is easy to install, and it's cheap. And it's creative. And it is "the powerdyne of turbo kits" and there are a lot of guys running their kits. There are also a lot of guys running a hot cam. It works, and I wont dispute that. You will have to decide what you want from your car and where you want to go.

Look at their dynos. Loot at their slips. Think of where you want to be. Think of that. Realize all those numbers werent necessarily on a stock shortblock. Read the complaints, read the compliments. Look at the guys who want lots of power and see where they went. See if you want to go that way.

And I'll give you this as an example, from my own setup, I've put $3340 into it (BOV, turbo, headers, downpipe, wastegate, oil ines, pipes) and I'm ALSO going to get an intercooler in another month. And my turbo is good for 800rwhp easy (I dont need to pay for an upgrade). I've done no fabrication work. Install is as easy as installing headers.

Again, search. Listen to all the guys that have gone each way and decide where you want to be. I nearly went the STS route - but I wanted something to make more power, be more efficient, and be cheaper. So I bought what I needed and made the kit myself. I want 800flywheel HP at 14psi on pump gas. What do you want?

 

Most people cant make a kit themselves. There are also not many people who can install a traditional front mount turbo. I put the turbo on my stock, yes stock, LS1 and made 412/451 @ 5psi. No modifications to make it fit. No searching for a particular part. Just follow the directions and put it on.
If you want more power it is easy to expand. There is an LS1 with forged rods and pistons, LS6 cam, LT's, and fuel making 570 at 10psi. No head work, not much of a cam and great power. This car is using a t-67 with the meth injection.
I am not saying this is the only way to go turbo, but for someone who wants a kit they can install themselves and get a nice gain, its a kit you should consider.

 

What are the IATs looking like without methanol injection?

 

IAT @ 5psi w/o meth is 115 degrees.