0Mike69@ECS

Many of you are probably familiar with the ECS Zr1 that was on the cover of Vette magazine back in May of 09.

http://www.vetteweb.com/tech/vemp_10...rts/index.html

At the Time we added a IW overdrive balancer, a set of American Racing Headers, a 2.6 upper pulley, hand ported the SC Inlet, added Tuning and cracked off 722rw on our DynaPack Dyno with 100 octane unleaded.

This time, we installed a ported LPE ZR1 blower inlet, a 2.3 Pulley, LPE's Zr1 Air Box and an ECS LS9 Blower Camshaft. Still running 100 octane unleaded, this package yielded 823RWHP, and 874RWTQ - with a nice little lope to boot.





This package was yielding 780+ at the wheels with back to back pulls during tuning, and after letting it cool cracked off the 823.... Hopefully this package proves to be enough for the owner, or we'll have more udates coming shortly!!!

Racer

Nice! Sounds great at idle too.

prostreet_632

823/874 with no head work looks to be pretty impressive. Not sure how you sqeeked that much power out of it, but good job. Have you done a pump gas tune and how much boost are you running?

BillY2KFRC

Great numbers, car sounds awesome as well!

Does that mean the owner is actually going to pick it up and I won't see it next time I stop by???

355Spider

So the 2.3 pulley yields more boost than the 2.6? That's what I thought but someone else said it was the other way around.

range96

Yes, the 2.3 pulley will turn the supercharger faster, providing more boost than the 2.6 blower pulley.

ss2z06

I would also like to know about the pump gas. How is the driveability?

Supersonic_ZR1

Andrew M

What kind of boost is this on? Are we talking 20+ psi?

Didn't realize that the zr1's blower was capable of so much power even over-spun were talking what like 1400cfm?

Mr turbo rotary

That thing's an animal!

0Mike69@ECS

We havent run this set up on 93 pump - and I doubt we will. You would certianly need meth to compensate though.

We logged a peak of 17.7psi on these pulls...

ss2z06

Is the meth needed due to lack of fueling? or to cool the charge? I will be running a similar setup but I only have 91 out here in CA. I plan on upgrading the heat exchanger to help. Any specs on the cam? How does it drive? Is there a lot of surging or is it pretty smooth?

DOUG @ ECS

The car drive fantastic! No surging or bucking, but it does sound like your driving a C6R race car though!
Either Meth injection or 100 octane is needed for the octane requirements of that kind of power. The owner of this car has 100 octane available locally, and is not concerned with the added expense. If you were to duplicate this package on 91 octane, it would not last very long to say the least. Cam specs are proprietary, sorry!

ALLNTRL

VERY Impressive #'s!!! Nice Job!

johnglenntwo

Some have said that even with 100 octane the ZR1 still heats up!

Pfadt Racing

Oh man, that thing is a beast. Great work gentlemen!

Fartpipe

Lots of HP whats it run in the 1/4???? I see LPE running 9's 2 years ago. LMR running mid 9's this past year. Is this ECS's year with a ZR1?????