SPE Q&A Regarding Our 1025hp Dyno Run

[SPE]

**This is copied from our Facebook page**

With the posting of our truck making 1025hp on fuel only, we've had many of you asking questions so we want to try & address them below.

Q- Why is the torque number so low?
A- That's because of the big chargers on the truck. The turbos are just lighting & the 6.7 can't fuel past 3800rpm but we are working on that.

Q- What's the set up on this truck?
A- The race truck is now running a 75 / 106. Both are Borg units s400 and s500 based.

Q- What kind of shifter is in the truck?
A- That's a custom one-off shifter designed for & only utilized by SPE.

Q- What engine is in that truck?
A- It's still a 6.7 Powerstroke. We have no plans on putting a 6.4 in it. Sorry.

Q- What was the 926hp I saw on the previous run?
A- That was us running it in overdrive. The transmission didn't like that with the load required to spool the chargers properly.

Q- What's all done to the engine?
A- SPE Stage II Long Block

Q- Whose dual fueler are you using?
A- SPE dual C4 .2 high pressure fuel pumps (one of only 2 made)

Q- What injectors are in it?
A- SPE 60% Over

Q- What dyno settings are you using?
A- SAE with a smoothing of 4

Q- How much boost does it make?
A- The pull was made with a street boost level of 90psi & the dyno load was constant through the pull.

 

[Jbenso127]

**This is copied from our Facebook page**



With the posting of our truck making 1025hp on fuel only, we've had many of you asking questions so we want to try & address them below.



Q- Why is the torque number so low?

A- That's because of the big chargers on the truck. The turbos are just lighting & the 6.7 can't fuel past 3800rpm but we are working on that.



Q- What's the set up on this truck?

A- The race truck is now running a 75 / 106. Both are Borg units s400 and s500 based.



Q- What kind of shifter is in the truck?

A- That's a custom one-off shifter designed for & only utilized by SPE.



Q- What engine is in that truck?

A- It's still a 6.7 Powerstroke. We have no plans on putting a 6.4 in it. Sorry.



Q- What was the 926hp I saw on the previous run?

A- That was us running it in overdrive. The transmission didn't like that with the load required to spool the chargers properly.



Q- What's all done to the engine?

A- SPE Stage II Long Block



Q- Whose dual fueler are you using?

A- SPE dual C4 .2 high pressure fuel pumps (one of only 2 made)



Q- What injectors are in it?

A- SPE 60% Over



Q- What dyno settings are you using?

A- SAE with a smoothing of 4



Q- How much boost does it make?

A- The pull was made with a street boost level of 90psi & the dyno load was constant through the pull.

I've asked twice where the 1045hp number came from.. lol

 

[SPE]

I've asked twice where the 1045hp number came from.. lol

Sorry. Missed that. That was us using up the little bit of nitrous left when the truck was in overdrive.

 

[Jbenso127]

No worries! Just curious.. Awesome numbers.. Is the large turbos the only reason why this 6.7 didn't make big torque or is this engine not going to produce the big torque numbers that some of the other platforms do?

 

[ChattyCathy]

No worries! Just curious.. Awesome numbers.. Is the large turbos the only reason why this 6.7 didn't make big torque or is this engine not going to produce the big torque numbers that some of the other platforms do?

That isn't the case...There has been a single turbo 6.7 that did 885 and 1840.

 

[Jbenso127]

That isn't the case...I know of a single turbo 6.7 that did 885 and 1840.

And who what that be?

 

[SPE]

No worries! Just curious.. Awesome numbers.. Is the large turbos the only reason why this 6.7 didn't make big torque or is this engine not going to produce the big torque numbers that some of the other platforms do?

It's the larger turbos & the inability to run passed 3800rpm. We are working on the rpm situation tho.

 

[TyCorr]

Is it possible you could garner better spool and numbers by slightly downsized chargers? Or do you anticipate the rpm issues resolution opening up a whole new world beyond for these chargers?

At any rate this is incredible!

 

[ChattyCathy]

And who what that be?

It doesn't matter in this thread, or really at all

 

[Jbenso127]

It doesn't matter in this thread, or really at all

Then I guess you shouldn't have brought up at all then?

 

[Doodie]

It doesn't matter in this thread, or really at all

I was going to ask what muffler they were running but that doesn't matter either...

 

[ChattyCathy]

I was going to ask what muffler they were running but that doesn't matter either...

Just trying to keep the thread related to SPE and still address that a 6.7 can make torque.

 

[jdgleason]

Torque is low because the chargers are huge and aren't lit down low where torque is normally made.

 

[TyCorr]

Aaaand this ***ker is in the toilet.....

 

[ChattyCathy]

Aaaand this ***ker is in the toilet.....

Dyno threads....

 

[Super Diesel]

What size tires were used, and what was the gear ratio?

Congrats by the way, that thing sounds awesome. Makes me REALLY want a 6.7

 

[Dzchey21]

i dont know why people even care about torque anyway. HP is what you measure at the track snyway

 

[ChattyCathy]

i dont know why people even care about torque anyway. HP is what you measure at the track snyway

If you could make identical passes what would the E T difference be between a 1000 1000 truck to a 1000 1500 truck ya think?

 

[TyCorr]

Ummmm, depends on the rpm that the torque peak takes place. I think? Theoretically wouldn't they do the same but in different points of powerband?

 

[Danny26]

What trans you guys running? ATS?