The Stovebolt Site Forums The Shop Area The HiPo Shop Made it to the dyno

Thought I'd post the results

DYNO

Forged 348ci
Stock LS6 heads
Stock LS6 intake
Stock Throttle body
Stock pulley
Edelbrock 1 3/4 stepped 1 7/8 HVMC headers
223/228 @ .050 108/108
Stock 4L80E with Stock verter
8.5" 10 bolt with 3.73 (riveria wheels)


Nitrous to follow:

http://performancetrucks.net/forums/showthread.php?t=398925

Good curve. What changed between runs??

Did some air fuel changes and timing adjustments. It needs some more tweaking between 3k and 4k. I think I can fix that dip in torque. I'm also going to make some pulls starting at 1200rpm to get the bottom end of the curve fixed up. Since it's got a small verter in it (stock) I feel I should get that dialed in as well. I also have a couple other changes I'm going to make. I ported a stock throttle body last night and did some clean up as well as ordered an underdrive pulley. Once the motor is broken in fully I'll swap to a synthetic instead of the HD diesel oil I have in it now. I'm hoping to get it to 385rwhp and 375ftlbs. Then the fun begins with the bottle.

That engine's making a ton of power. Was that at the rollers behind a 4L80e! Nice work!
MV

Yes those are numbers at the rear tires. I have a few changes I will be doing (more than likely after I get married and back from the honeymoon) but the goal is 385rwhp and 375ftlbs.

Right now I am running Delo (HD/Diesel oil) and I will be swaping to Mobil 1 synthetic.

I have a stock crank pulley which I bought a underdrive pulley and waiting for it to come in.

I had a second Throttle body which I just finished porting and filling a big void in it to help air flow.

I'm hoping that does the trick.

Super 73 ,
What did you do for wiring,ecm ? I'm in the process of installing a 2006 6.0 w/4L80E in my 61 4x4 Burb and I'm undecided what to do with the harness .Buy a after market or retro the original please share your set up.
Thanks 61 Suburban

We used a stock harness and removed the smog wires. If you go to LS1tech in the Hybrid section there is a ton of info there. Also, Performancetrucks.net is another great site. There is an older truck section under specialty vehicles. I go by LIL SS on both sites.

How come in neither run do the torque and hp curves cross at 5252RPM? And the crossovers occur at different RPM for the two tests?

Kevin,

I did not notice this. I'm wondering if the tach was not reading right on the dyno. I'll be back there in 3 weeks after my honeymoon (getting married on Sunday). I need to swap out the Delo oil for synthetic, put on an underdrive pulley and a ported throttle body. I'm going to make 4 back to back pulls to see what kind of TQ/HP each one gives if any. So I'll take a closer look at the RPM when I am there again.