Stock LS7 on engine dyno with BS3
I can tell you that I have tried 2 of the 3 on my new Z06 with very different results. First we made installed the Dynatech C6 LS2 headers and LOST about 4 rwhp due to the D port design needed on the LS7
Awesome numbers! Now that you have proven BS3 to work w/ the LS7 I can see a lot of possibilities here! Question, did you have a chance to do a baseline with a stock LS7 computer and if so could you post those numbers for reference?
Thread Starter
TECH Junkie
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From: Clayton, North Carolina
The engine only ran with the BS3, should be no real difference between the two other than the speed density/mass meter difference. They both use seq control.
Kurt
Kurt
Originally Posted by Cyborg
Awesome numbers! Now that you have proven BS3 to work w/ the LS7 I can see a lot of possibilities here! Question, did you have a chance to do a baseline with a stock LS7 computer and if so could you post those numbers for reference?
Teching In
Joined: Oct 2004
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Originally Posted by billreid1@***.net
Well I guess "505hp" is out the window 
Bill
Bill
The factory rated 505 is SAE J-1349 (29.23" Hg and 77F) corrected, which most people refer to as SAE corrected. Kurt's numbers are SAE J-609 (29.92" Hg and 60F) which is referred to as STP corrected. The difference is about 3.8%, STP being higher. This makes the peak HP 527hp J-1349 or SAE corrected.
So...22hp gain with headers, dyno exhaust, and calibrations sounds about right.
Last edited by Paynful; Jan 19, 2006 at 12:24 PM.
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From: Reno, NV
Originally Posted by chuntington101
Builder, not long before you will gunning for Gman and the 0-100-0 record! 
and he only has a little 377!
Chris.
and he only has a little 377!
Chris.
).Unfortunately, I can't make a record attempt. The 9.8 second record for 0-100-0 is for a car as available from the factory. I could only go for it if Ultima would start offering the LS7 and G50/52 combination for the GTR.
That's not to say I won't be working on beating it anyway.
Teching In
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Originally Posted by Builder
According to American Speed, his little 377 is putting out 680 bhp (with a big, unexplained correction factor on the dyno ).
Unfortunately, I can't make a record attempt. The 9.8 second record for 0-100-0 is for a car as available from the factory. I could only go for it if Ultima would start offering the LS7 and G50/52 combination for the GTR.
That's not to say I won't be working on beating it anyway.
).Unfortunately, I can't make a record attempt. The 9.8 second record for 0-100-0 is for a car as available from the factory. I could only go for it if Ultima would start offering the LS7 and G50/52 combination for the GTR.
That's not to say I won't be working on beating it anyway.
I have to say that if I was to do a Canam ( which I am think about ) I would use an LS7, a motec m800 , fly by wire throttle, traction control.
I think this project is as important to the Ultima brand as my 377ci was ....
Teching In
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I know the factory are very interested in the LS7 engine, we spoke last year about doing a Canam ls7, they were up for it !!
It really has to be the new engine of choice .. issues would be the the exhaust manifold and catalyst convertors that a new engine would require in the UK and Euroland. But considering it has the head designed by Chapman who did my head, Ti rods and valves it has the right parts for $14K (£8K) is unbelieveable
You would in my opinion have to run the reverie carbon side pods with a cold air feed to the throttle body
It really has to be the new engine of choice .. issues would be the the exhaust manifold and catalyst convertors that a new engine would require in the UK and Euroland. But considering it has the head designed by Chapman who did my head, Ti rods and valves it has the right parts for $14K (£8K) is unbelieveable
You would in my opinion have to run the reverie carbon side pods with a cold air feed to the throttle body
Staging Lane
Joined: Dec 2001
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From: crystal lake, IL
Ultima recieved one of my ready to run Supercharged LS2's in England last week.
And yea, I'm Scott's friend doing a twin turbo LS2 with a pair of Turbonetics T61's
Jeff S
www.schwartzperformance.com
And yea, I'm Scott's friend doing a twin turbo LS2 with a pair of Turbonetics T61's
Jeff S
www.schwartzperformance.com
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From: Reno, NV
Originally Posted by Reckless
Sounds like that will be a very fast car. I like the styling of those cars, and 500hp? More than enough. 
Didn't catch your post earlier. Thanks!
Do you think it will be competitive in the quarter? I hope to run mid-10s at ~140.
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TECH Junkie
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From: Clayton, North Carolina
We are done tuning the LS7 with Big Stuff 3 controls.
In final runs, we fell just short of 560hp with the FAST TB upside down on a spacer. After installing the UMI tb upside down with the spacer, we made 564hp@6000 rpm. The UMI seems to drive up smoother on the transition from idle.
Thanks Scott(Builder) for sending your LS7 to be used in the test, I will be the one crying when it ships out......
Kurt
In final runs, we fell just short of 560hp with the FAST TB upside down on a spacer. After installing the UMI tb upside down with the spacer, we made 564hp@6000 rpm. The UMI seems to drive up smoother on the transition from idle.
Thanks Scott(Builder) for sending your LS7 to be used in the test, I will be the one crying when it ships out......
Kurt
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From: Reno, NV
Kurt and John (from BS3)...you guys rule! Mark, your UMI TB rocks!
I can understand your tears, Kurt. Take comfort in knowing that it will be tears of joy at my end. You guys have accelerated my build in more ways than one and I am truly grateful.
564!!! Ohhhh, yeah baby!!!
I can understand your tears, Kurt. Take comfort in knowing that it will be tears of joy at my end. You guys have accelerated my build in more ways than one and I am truly grateful.
564!!! Ohhhh, yeah baby!!!
So Kurt,
Do you think that the UMI throttle body is worth the price???
How did it compare to the FAST unit by quality standards?? Is the throttle as cheesy as the FAST or not. I think we are all waiting to see what you have to say about this new throttle body.
Do you think that the UMI throttle body is worth the price???
How did it compare to the FAST unit by quality standards?? Is the throttle as cheesy as the FAST or not. I think we are all waiting to see what you have to say about this new throttle body.
Thread Starter
TECH Junkie
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From: Clayton, North Carolina
The off idle response was much smoother than the FAST. It has bearings on the shaft and comes with the hardware to attach the IAC and TPS. Overall this would be the one for a driver for sure and overall HP it was good for about 4hp over the FAST.
Kurt
Kurt