3.9 Liter LZ8 specifications needed

[Beau]

p.s. do we have any info on the 60 degree 2.8T saab motor yet? Thats another one that looks nice to me

[bszopi]

p.s. do we have any info on the 60 degree 2.8T saab motor yet? Thats another one that looks nice to me

http://media.gm.com/us/powertrain/en/product_services/Spec%20Sheets/HFV6/2006%20HFV6%20(LP9).pdf

http://media.gm.com/us/powertrain/en/product_services/HPT%20Library/HFV6/2006_28L_Turbo_LP9_english_250hp.pdf

http://media.gm.com/us/powertrain/en/product_services/whats%20new/06%20car%20eng/06_PIG_2.8L%20Turbo%20(LP9)_rev101005.pdf

That's about all we know right now...

[TurboZ24]

I basically run a similar setup, T4 P trim .69 A/R / 60-1 compressor. Full boost is still achieved by 3000-3500 rpm range (well, at least upto 16-20 psi), 3" downpipe, 2.5" charge pipes, etc. I have run the motor as high as 20 psi on the current setup (upto 23 on a previous T3/T4 hybrid), but I simply can't put the power down and when I ran it at the track with 16 psi and full slicks, it shattered various parts of the manual trans.

The dyno could probably be better, the engine wasn't running it's best at the time.

As for peak HP, on that basically stock 3.1, peak occured actually at 5500 rpm, which is nice. Mine was at 6000, but considering that's where the spark crapped out, it should peak somewhere in the 6800-7000 rpm range with a maximum of 8000 rpm. So, as you said, it's a rev'er.

There is a ton of potential in the 60 degrees, even the older 3.1. There is no problem with the "Core" motor, it's the manifolds, exhaust, cam, and ports in the heads that limit the various generations.

[Beau]

What is it about the ports would you say?

I've ported a set of heads for a 3.1 or 3100 Im not sure which.

P.S. that turbo 2.8 Looks.. Beautiful
Get a larger single turbo on that with some exhaust manifolds that will flow, and that would probably be a powerful motor. 250 horse from 7 psi. I just wish it was lower compression :]

AHh I guess Gm powertrain left part of it out, the 2.8 Liter NA version which we won't see has 10.0:1 CR while our Turbocharged 2.8 Variant has 9.5:1 that makes me feel.. MUCH better :-D

[SappySE107]

Once my folder is uploaded, I can show you some flow sheets. The gen 3 heads flow a lot better than gen 2. I have flowed the heads with manifolds as well to show those losses (not exhaust manifolds yet though).

If someone wants to send me 3500 heads or 3900 heads with intakes, i will design a new flowbench box to allow me to swap in different size cylinders as right now im stuck with the 3.4 bore.

[Manitcor]

I can attest to the power of turbos on 3x00s. I had a small t3/t4 on an otherwise stock 3100 and put down 171hp/218tq at the wheels at a mere 4psi intercooled.

There are a couple other folks running turbo 3400s and make north of 285whp on 7-8psi. Im working on a kit myself with a target of about 310-330whp at about 9-10psi. If some of the dynos are any indication I may surpass that. Im honestly more worried about the trans than I am the bottom end. Though based on what ive been reading once you start to approch and pass 400hp crank you are getting close to the upper limit of the rated tensile strength of the stock rods. Im still trying to confirm that information however.

Ben, Im uploading your personal folder now, Im on pokey DSL here in florida with the family so its going to take a couple hours to push up all 70meg. Ill email you with the location of the file.

-EDIT-

File upload complete