dyno #1 on 7/2/2008 produced 268/296 (tuned stock lq9)
dyno #2 on 12/10/2008 produced 305/328 (added headers and cutout). Never dyno'd post heads and cam.

The above runs were done in 2nd gear and seem like ages ago. Plan to dyno it in 3rd gear this time.

Will dyno this upcoming Friday. As of now it should be on 10 psi. Although it's a dynojet and I'm not sure if I will be able to get the same boost as I see on the street.

My guess is 550-560 rwhp. Would be sorely disappointed with anything less than 500.

 

555


Looking forward to results

 

Good thing you're not using the dyno here in Tucson, you might put down 580hp on 20psi. Lol

 

Which heads are you running again? The PRC 215's?

I'm right there with ya on the dyno numbers... I would expect mid 500's at 10#, and I would be bummed to see less than 500. I hope you can hit full boost.

Do you have plans to crank up the boost any higher? How is the EPS cam with the turbo?

 

The cam works very well with the turbo, but it's a bit large given that I only spin to 6000 rpms now. I'm just too lazy to swap it out given how well it's working. The heads are just ported 317 castings by PRC, not the full aftermarket 215 castings.

As far as upping the boost, yes, I will be doing that but my fuel pump is maxed out now and the 1000cc injectors are already at 77% IDC. I'm probably going to switch to E60 fuel and see if that will allow me to up the boost to 13 or 14 psi. I'll see how that works. If I don't like it versus the straight E85 I'll just add the second Walbro 450 which I'll probably end up doing anyways. I just don't like the idea of hacking off the entire bottom of my fuel bucket, plus it's going to be a bitch to even get both of those pumps into the tank itself. May have to swap to the 04 up fuel tank.


EDIT:
My attempt to mix to E60 failed. I thought the tank was more run down than it was. I got in 14 gals of E85 and 4.8 gals of 93. By the math that comes out to E71 assuming the tank holds a full 26 gallons.

I actually measured the fuel from the test port and it's coming in just a hair over E75 which makes sense because I tested the straight E85 which was coming in around 90% ethanol! Potent stuff, and would explain why my truck takes around 2 seconds to fire off with the straight e85. With this blend it fires up instantly like E10.

 

575 if you can get enough spark in there. GL

 

Going with 585/600

 

Just got back from dyno

542 rwhp @ 5800 rpm and approx 10 psi.

They refused to run in 3rd gear due to the problems theyve had with flinging driveshafts, so had to run in 2nd (40-80 mph).

# isnt too far from what I was expecting but the dyno didnt load up the turbo like on the street (expected). Also continued problems with boost control. SP of 0 and 40 yielded the same boost.

 

Those numbers sound good to me!

You have a lot of legitimate 'excuses' that realistically drop HP compared to what you experience on the street.

I wouldnt be surprised if on a legitimate 3rd gear pull with a fully loaded 10# boost you are making 600 HP. very impressive.

 

Yep, I had a discussion with the dyno operator and we both felt it would be closer to 590-600 on a 3rd gear pull, but it's irrelevant. Eventhough I was dissapointed, I agreed with him about running it in 2nd. Better safe than sorry eventhough I highly doubt the 2 pc. steel driveshaft would have any issues. I'm just going to use this as a comparison for future upgrades.