Dyno Comparison Vortech SQ vrs KB Blowzilla

[final5-0]

I was playing around with some blown combos earlier today and I thought I'd throw this up for you guys.

Grady

 

[94MustangGT5.0]

Interesting chart Grady. I love how that KB car had all of that torque at 2500 RPM's, and it wasn't until nearly 4000 RPM's that the Vortech eclipsed the KB's torque figure. I wonder what the chart would look like if the Vortech car had a custom ground blower cam rather than stock? Needless to say, the side by side comparison makes it easy for one to see where each power adder shines.

 

[final5-0]

Interesting chart Grady. I love how that KB car had all of that torque at 2500 RPM's, and it wasn't until nearly 4000 RPM's that the Vortech eclipsed the KB's torque figure. I wonder what the chart would look like if the Vortech car had a custom ground blower cam rather than stock? Needless to say, the side by side comparison makes it easy for one to see where each power adder shines.

You would not believe how hard I looked to find that SQ combo

It was the only one I could find that came close to matching the KB combo. All the others were stroked, or had other things that made an unfair comparison

I do hope to find a Vortech S trim stock block combo about like this one but with a cam

Grady

 

[S/CBlack95GT]

That's a pretty cool comparison. Im glad to see my car up there too..hehe. A cam sure would wake my combo up.

But just FYI. The HP curve shown up there for mine isnt quite right. In real life the HP peaked at 415rwhp around 5400rpms and stayed there until we shut it down at 6000rpms. The graph up there shows it dropping off real fast after 5500rpms. Still a great comparison though

Here is my real chart:

 

[KBCobra95]

Here is my kb chart with almost the same mods running 7#s boost, pegging meter.

 

[Zero Signal]

400 ft-lbs @ 2500 rpm

 

[final5-0]

That's a pretty cool comparison. Im glad to see my car up there too..hehe. A cam sure would wake my combo up.

But just FYI. The HP curve shown up there for mine isnt quite right. In real life the HP peaked at 415rwhp around 5400rpms and stayed there until we shut it down at 6000rpms. The graph up there shows it dropping off real fast after 5500rpms. Still a great comparison though

Here is my real chart:

Shaun

When I look at these various combos I don't have numerical values about 95% of the time. I split the rpm range in increments of 250 when I build the chart. This means I have to arrive at 32 different values to build the curves. I did have to slide your peak hp over to 5500 due to the split I used.

If I used the value of 100 the curve shape might be a little closer. That would be too much work and using the 250 rpm split gets things close enough for me to see the jest of how things are. The chart you provided is the same one I used btw.

Your hp drop off at the end looks the way it does due to I only use one scale to measure hp & tq which keeps things simple. Your chart hp values are split in 50 where mine are in only 25. That is why your hp curve does not show as great a drop at the end.

I was in no way trying to misrepresent your combo and if you have numerical values of the pull, pm them to me and I will load them in the file and post them up in this thread.

I'm usually not off by more that 2 or 3 at the most.

I was really impressed with your combo
AND
Sorry if I offended you in any way

Grady

 

[final5-0]

Here is my kb chart with almost the same mods running 7#s boost, pegging meter.

Looks Good

What kind of dyno?

Are these values SAE?

Grady

 

[wytstang]

455tq on #7 wow what a tq monster.

 

[Killercanary]

Grady, my cousin Matt has since upgraded to a GT40 lower and a flowzilla inlet which should put him up near KBcobra95's numbers, which are STOUT BTW! That combo would be a better match IMO due to the flow of the intakes in question.

Very cool info though!

Shaun, how many lbs of boost do you see?

 

[KBCobra95]

Looks Good

What kind of dyno?

Are these values SAE?

Grady

It was done by Pro Dyno (Dyno Jet)

 

[final5-0]

I really do find this method to be an excellent way to see the big picture of what is going on between two combos.

It goes without saying, you really do want to have an apples to apples comparison between the two.

If anyone has a Vortech combo that would be a bit closer to Matt's combo
I would be happy to load it up.

BTW .............

A question to all members here ................

Say Shaun had a cam

What kind of change does everybody think it would make

Will the fact, boost is involved, inflate the resusts compared to NA

Grady

 

[S/CBlack95GT]

Shaun

When I look at these various combos I don't have numerical values about 95% of the time. I split the rpm range in increments of 250 when I build the chart. This means I have to arrive at 32 different values to build the curves. I did have to slide your peak hp over to 5500 due to the split I used.

If I used the value of 100 the curve shape might be a little closer. That would be too much work and using the 250 rpm split gets things close enough for me to see the jest of how things are. The chart you provided is the same one I used btw.

Your hp drop off at the end looks the way it does due to I only use one scale to measure hp & tq which keeps things simple. Your chart hp values are split in 50 where mine are in only 25. That is why your hp curve does not show as great a drop at the end.

I was in no way trying to misrepresent your combo and if you have numerical values of the pull, pm them to me and I will load them in the file and post them up in this thread.

I'm usually not off by more that 2 or 3 at the most.

I was really impressed with your combo
AND
Sorry if I offended you in any way

Grady

Nah man, I wasnt bothered at all. I was actually very flattered that you used mine. When I was looking at your graph I just thought something didnt look right and then I noticed that power there at the end. I understand now why it looks the way it does. I didnt realize that you made the graph. I thought it was just pulled from somewhere else on here.

 

[S/CBlack95GT]

Grady, my cousin Matt has since upgraded to a GT40 lower and a flowzilla inlet which should put him up near KBcobra95's numbers, which are STOUT BTW! That combo would be a better match IMO due to the flow of the intakes in question.

Very cool info though!

Shaun, how many lbs of boost do you see?

It was around 9.5 at peak power and 11.25 at 6000rpms.

 

[wytstang]

A question to all members here ................

Say Shaun had a cam

What kind of change does everybody think it would make

A tune silly....

 

[S/CBlack95GT]

A tune silly....

Yea def.. Id have to put it on the dyno....again

 

[Stang D]

The KB does max HP is at a higher RPM than the Vortech? That's not typical at all is it? That's most likely the camshaft difference right? I have a feeling the Vortech is going to sail through 450HP with a cam. In any case, looks like a couple very fun rides.

 

[Killercanary]

It was around 9.5 at peak power and 11.25 at 6000rpms.

Thanks Shaun! What pulley are you running?


Grady, what do you think the KB setup would have done with 9-11lbs? Matt was only seeing 6lbs with the setup you illustrated above. I also wonder what his true peak is/was since the dyno graph was still climbing when they shut it down. The torque had started to drop but it wasn't falling like a rock. I used to know an equation to determine peak power from peak TQ at a given RPM, but I can't remember it anymore.

 

[S/CBlack95GT]

Thanks Shaun! What pulley are you running?


Grady, what do you think the KB setup would have done with 9-11lbs? Matt was only seeing 6lbs with the setup you illustrated above. I also wonder what his true peak is/was since the dyno graph was still climbing when they shut it down. The torque had started to drop but it wasn't falling like a rock. I used to know an equation to determine peak power from peak TQ at a given RPM, but I can't remember it anymore.

The stock ones, 3.33 blower and 6.87 crank, along with an AFM PowerPipe.

 

[final5-0]

Grady, what do you think the KB setup would have done with 9-11lbs? Matt was only seeing 6lbs with the setup you illustrated above. I also wonder what his true peak is/was since the dyno graph was still climbing when they shut it down. The torque had started to drop but it wasn't falling like a rock. I used to know an equation to determine peak power from peak TQ at a given RPM, but I can't remember it anymore.

Well Paul

You do remember we have briefly talked about boost before.

Matt was only seeing 6lbs.

However that is with a pretty good flowing combo!

If he upped the boost, he would have to see a larger gain, thats for sure.

And I also think it would be cool if we had Matt at the same boost level as Shaun.

I really would like get my hands on a fair and equal KB/S-Trim set of combos to load up and look at their curves but so far, I can't find a good pair of them to use.

The Question I still have not had answered is this .................

What if Shaun had a cam ???????????????

I feel if he was NA he might see a gain of around 20 to 30

Since he is boosted ..................

Would that gain be greater ??????????????
Seems to me, it would be!

Grady