I came across a web site that put a turbo on a stock lt1 engine - 97 camaro 6 speed. STOCK ENGINE NO HEAD WORK NOTHING ALL STOCK. Turbo at 7psi made 485 rwhp and 12psi with a little nitrous made 556rwhp. Is it possible or true to make these numbers on a stock engine. I know a procharger 8psi will not make 485 rwhp from what I heard. Did anybody here ever make those numbers on a stock engine???? I'm sure with headers,throttle body,port heads,etc with 7psi you should be well over the 500rwhp mark if all this is true

 

Those numbers seem fishy to me.... a totally STOCK LT1 will be about 240RWHP. 7psi isn't going to double the HP. To get 485RWHP I think you would need 15 psi to double the HP on a totally stock LT1 with only boost (no N20, methanol, etc). They must be doing something else if they are getting those numbers from 7psi.

 

485 @ the flywheel maybe. I think mine made 380 @ the wheels w/ a completely stock drivetrain and an 8# Procharger.

 

If this is the car I am thinking of then the numbers are true. I was there for the dyno and when he limped it home. It almost died on the dyno and smoked all the way home. We were trying to kill it on the dyno that night and it wouldn't die. I was also there for the tear down and the engine was stock except for the turbo. One of the pistons had a pretty large hole in it too. You could fit a quarter through it.

 

nah the guy that made the post is right, it was 485 RWHP on 7 psi. pump gas.

It is my site u saw it on. On the dyno where it made 554 rwhp it wasn't spraying nitrous into the motor, just on the intercooler to cool the air.

Yes it was a completely stock 60,000 LT1. It made 260 rwhp before the boost. It had a mcleaud twin disc and 9" rear during the dynos.

I have a video of the night where the car was FLOGGED on teh dyno till death, when it made the 554 rwhp was on 7 cyls. here:

http://www.force-fed-fabrications.com/videos/speed.wmv

save as!



All pulls were on pump gas, stock pcm programming. Therefore why it probably died. But it died extremely hard, still drove home.

Best time at the track was 11.8 at 128 mph, 12 psi on race gas, 2.2 60ft, stock rear end during the track runs, never had a chance to run on the 9".

 

Yeah thats the site. Told you all. I'm going with a turbo know - forget a procharger. - turbo is the only way to go

 

Nice to see someone else has seen the light....

~BB~

 

Ok, I'm gonna do it ...


7 psi of boost is at best 1.5 times atmospheric pressure. The most you could hope for what ever the car made normally aspirated times 1.5. It's all in the arithmetic. In your case that would be 260 * 1.5 = 390 rwhp. That is assuming what you said about it being a stock engine and all.

And 554 rwhp on 7 cylinders ... I'm thinking ... put the crack pipe down ... and step away from the table.

Hope this helps

LWM

 

whatch the video its right there, if you don't believe 7 cylinders watch the video when the site comes back up, in the end there is a hole sandblasted below the cutout where piston chunks hit the ground. I have several cases of cars where your arithimatic fails extremely bad:



3.4L made 150 rwhp + 5 psi madee 290 rwhp.
3.8L made 160 rwhp + 7 psi made 300 rwhp
LT1 madee 260 rwhp + 7 psi maded 485 rwhp
LS1 made 290 rwhp + 10 psi made 615 rwhp

All cars were bone stock + boost except the 3.4 whichhas heads/intake (also includeed in teh baseline). The Ls1 has forged bottom end but that only hurts your calc since it lost 1.0 of compression ratio from the base line to the boost numbers.

 

its not just psi, psi only tells you how far your above the 14.7. it CFM thats what couts

 

I understand that, the point was that it was a "stock" engine, "completely stock" was the term used. In which case, 7psi of boost equates to at best 1.5 times atmospheric, losses incurred with the increased flow rates and other parasitic losses in the drive train will not allow the expected 1.5 times power increase over stock.

I'm thinking you also should cut down on the drugs ... pick up a book on flow dynamics ... naw ... just keep living the world that allows an 85% rwhp gain while the air supplied is increased only 50%, and on just 7 cylinders. No mention of increased parasitic losses through the drive train.

And please ... spell arithmetic correctly in future posts.

What absolutely amazes me is that you actually believe what you are posting ... I think it's time to increase funding for the War Against Drugs.

Hope this helps

And the flag still waves

LWM

 

I have to agree with LMV on this one . I cannot see where you are picking up 300+ rwhp . I figure 7 cylinders would make maybe around 200 rwhp with 7 psi I would maybe expect to see 285rwhp. I have a 383, afr's. t-trim with 13psi with a water to ice aftercooler and I am only seeing 565rwhp . So it is hard for me to believe that a vehicle not even running on all 8 cylinders could make that kind of power .

 

I am skeptical on this one. But I am not sure what it proves anyway. Who wants a "one hit wonder"?

Rich

Rich

 

The game of turbochargers is a little different - and though I see these posted numbers as nearly to the point of madness, I will not totally doubt them. After all, running a motor on the fine line of maximum performance and obliteration often yields incredible results.

And I also wont rule out the possibility that though nitrous was only sprayed on the IC, it may have increased the oxygen content near the filter and allowed more power to be run. I dont know - and none of us have all the variables. Nearly insane? Yes. But possible, espicially if some extra o2 made it through that filter...

 

just got another number for you yesterday, 3.8L custom kit I made:

na: 175 rwhp

7 psi : 330 rwhp.

wasnt even a full pull, shut down early due to lack of tuning right now.

We'll see what she does when tuned up.