Completely stock 6.0, no upgrades, (2500 series truck engine!)
18* timing on dyno
11.5 afr,
mpt-70
6PSI
Peak torque ---467@ 3200rpms
Peak HP ---382@ 5000rpms

Running through 4l80E, stock converter,

12 bolt, 3.08 gears

Sound right?

 

Not sure but with 3.08gears, stock TC and 80E.. i bet it doesnt get out of the hole too good.


OH yea, you got the Dyno Graph?

 

Sounds about right to me, not bad.

 

This thing is really a mover!

The torque on it is really great, it just runs out of steam around 5000, a complete fall off the mountain.

I think it is time for cam and springs.

DM

 

Those numbers are similar to what I was running at 6psi on my 5.3L but my torque was no where near 467, I think it was 398ft/lbs for me. I can see the 6L doing better than mine easily!
I have no idea why she would die down after 5000rpm's what cam is in it?

 

what size exhaust ar housing you got on that mpt-70

 

it has the stock cam for a 2002 2500 series truck, 6.0l w/ 4l80e.

.96 a/r on exhaust housing!

DM.

 

Looks pretty good to me. I made 398hp and 406tq w/ my 4.8 at 6#, but i didnt have the 4L80E.

 

Was the the converter locked?

 

were you spinnin out on the dyno? i know i was and put down 392hp and 485tq with a 5.3 at 8psi t-67 and 4l60e