it looks like it would be a good race on paper, the ss s/c has a few more rpm's so it would probably be a drivers race with the edge given to the ss t/c.

 

tuning wise i completely agree.

i think maybe i may have misunderstood the point.

Im just saying that 100lbs of rotating mass is CERTAINLY going to make a difference to a reading.

 

SS/SC also 5% shorter gears 4.05 vs. 3.85 final drive.

 

true statement. I think a race between a stage 2 SS/SC and a stock SS/TC would definitely be close.

But these definitely aren't god's gift to the fwd sport compact market. Hopefully there will be a few running around when I get back to omaha in september. I love get a vid of a stock pulley SS/SC raping one. lol.

 

Hmmm.

5% shorter gears vs. +10whp and +55 ft lbs. That's gotta be a close one.

I think for our next "test" (and seeing how too many variables enter into E.T.) we should get both cars on the same drag strip, on the same day, and then compare their Trap Speeds.

That'd be interesting ...

 

you def got 229.5 on that second one

 

Not to split hairs, but that's exactly what I thought!

But you can hear Morgan saying "227".

???

 

its a sc vs tc conspiracy!!!

turbos always tryin to keep a blower down i tell ya!

 

Nice dyno's. Did they tell you if they will dyno the car again after 500 miles when its cherry is popped? Im curious to see what numbers it puts down then with a few more psi. Its wierd though seeing a SS at the dyno not whining away..

 

 

ahaha tc owns

finally got some numbers... thanks guys

 

Morgan said that the 75 miles on the car were almost all testing/racing miles, and that the SS/T was making full boost as of right now.

So the SS/T's already broken in!

As far as the noise thing, yeah, that SS/T was almost "quiet" on the dyno (especially with no tires pressing up against a roller to make any noise).

The supercharger definitely took the "Best Sounding Engine" award that day.

Finally? Where have you been?

And just to clarify PL2, the SS/T only owned in torque against my Stage 2.

A simple 10whp difference owns nothing!

 

Thanks

 

If I remember correctly, Morgan said the SS/T was boosting at 17.

So I don't know, is that full boost then?

 

So are Gm's numbers correct by their standards?

 

And here's the proof!



^I'VE BEEN HAD!

 

Well I know the turbo can make 21 psi to meet the 260hp if it needs to be. But my buddys dad who has a sky RL says his makes 23 psi out in vegas.

 

Well, GM states that the SS/T produces the same amount of hp at the flywheel as it does torque (260/260).

But on the dyno, that the SS/T got 237whp and 258 lb ft.

???

In addition to that, I read an article where people who routinely tested on a Dynapack said this about drive train loss:

"In our experience, a manual transmission FWD car will lose 20-25 hp to the hubs on the Dynapack. A RWD car will lose 25-30 hp and an AWD car about 35-40 hp (the FWD case has been verified on an engine dyno). In contrast, losses on the Dynojet will be in the 12-14% range for FWD and 14-16% for RWD (opinions vary)."

Seeing that their FWD conversion numbers were verified by actually testing the engine on an ENGINE dyno, and then on the Dynapack dyno, I'd say those figures are probably right on.

That would mean 247-252 crank hp for my Stage 2 SC, and 257-262 crank hp for the SS/T.

Pretty believable ...

It was like 70 degrees and dry out the other day when we tested, so does that mean the engine only needed 17psi then?

 

I agree but that is a bad reading on the stage 2. My stage 2 on a mustang dyno pulled 241 in third gear with nothing but an intake. Think about it....800+ dollars for 12 whp? (stock cobalts can pull 215)

Don't get me wrong....id much rather have a turbo

 

Believe me, if you had put your SC on our dyno the day we tested, you would not have been making 241whp.

But we gotta remember something here, we're not comparing dyno vs dyno.

We're comparing 2 different cars on the same dyno, on the same day, at the same time.

And that's what counts.

 

Thank you.

 

^Men Of Few Words

 

I'm just glad someone did it finally, and took a Stage 2 in for comparison on the SAME dyno...

now we know where numbers stand for the most part, but I think after about 1000miles on the TC, you may see even more power...

 

I'm all for having a drag race with cobalts in various "stages" of tune at the track.

At 75 miles, i'm confident our engine is 95% broken in. Brand new engines built here get broken in on the dyno, tuned and are ready to go.

It was great meeting Frank, and i'll agree his stage 2 sounded better. I think once the TC is "opened up" it will have a nice sound to it. Supercharger whine is tough to beat though

 

No a/f readings? I'm curious to see how GM has it (ss/tc) tuned under boost.