Dyno Day

[Paul Workman]

Originally Posted by XfireZ51

Very nice day in Chicagoland for mid-November. Had to take car out for a brief playtime. The power is intoxicating. 2nd and 3rd gears pull. You can feel the power on reserve. Just tip the throttle and there's MORE, period.
Torque? Yep!
Banging 3nd gear, the car jumps as tires grab. Still keeping ASR ON with street tires but the Nitto Invos feel pretty good. I find myself looking for unsuspecting GTs, Sti's or M3s. Damn this is fun!!!!!
What's fun is having a ZR-1 with 100k+ on the ODO and not giving a shi* about driving it to keep the miles down.

You've come a long way "since then", Dom!

As for the "unsuspecting", you can add all C5s and base C6s to the "road kill". Now, Pete, Kevin, Bob G, and Al...doan hafta tip their hat to nuttin!

P.

[XfireZ51]

Originally Posted by Paul Workman

Looking good, Dom. Welcome to the "500" club!

Now a nice 4.30 gear for the rear, and you can bench race with the best of 'em!


(U know I'm juss pullin yer tail, buddy! LOL!)

P.

Paul,

With my 19" Z06 wheels the 4.30's would reduce down to 4.10's or so. I'd at least like to raise the current gearing which is 3.45 but runs as if it's about a 3.0 gear. A 3.90 gear should get me very close to the stock setup.

[tomtom72]

From the peanut gallery.......A tip 'o the hat ( a ZR-1 hat ofcourse! ) to you Dom.

That looks like it will be another FBI-land Killer Z!



Tom

[XfireZ51]

Originally Posted by tomtom72

From the peanut gallery.......A tip 'o the hat ( a ZR-1 hat ofcourse! ) to you Dom.

That looks like it will be another FBI-land Killer Z!



Tom

Tom,

Actually tip of the hat goes to FBI guyz! Pete, Kevin, Al, Bob G., Marc are all very helpful and real enthusiasts when it comes to the ZR and LT-5. They're the pioneers who have spent the time to investigate, the trial and error and money it costs relentlessly pursuing the power and performance. Paul and =Jeff= just are always ready to lend a hand or tool.

[FU]

Originally Posted by XfireZ51

Actually tip of the hat goes to FBI guyz! Pete, Kevin, Al, Bob G., Marc, Paul and =Jeff=

And too you also Dom. Congrat's to all

[XfireZ51]

Here's a Before and After when looking at Ported Heads + Intake Cams v.
stock heads and ported top end. At the end of the day, its significant.

[XfireZ51]

At our last pizza night, I asked Marc if he could access the final run from his tuning session for Paul W's motor. He was kind enough to send it to me last week and so I have attached a .jpg with each of our final runs superimposed. Paul's run is in BLUE, mine in RED.
As you look at this, recall the variables still in place when doing a apples to apples, but regardless its an interesting comarison. The differences are:

1. Different dynos although both are DynoJet
2. Paul has used the Pete the Greek porting template
3. Paul has stock cams
4. My heads were done by VanDeventer
5. My cams are Pete's Stage 1 intakes at 236/.425" single pattern profile
6. Paul has SW 2" primary headers/ I am using 1 7/8" Watsons. We're both using SW Xpipe and MFlow mufflers.

Also if you look at top of Dyno run, you'll see that Gear Ratios are different. Not sure what that means or why because Paul and I both have 3.45's. AFR is only available for my run since Marc uses his own WB during his tuning.

The question that occurs to me is whether porting or cams is the bigger bang for the buck. It would be interesting to get Dave Johnson's car on the dyno since he has the same cams I do, BUT with the cylinder head porting by Pete.

[mike100]

Too close to tell if they weren't dyno'ed the same day. A drag race might be the best way to find out who has the most area under the curve.

[XfireZ51]

Originally Posted by mike100

Too close to tell if they weren't dyno'ed the same day. A drag race might be the best way to find out who has the most area under the curve.

The curves are both SAE corrected. However, not on the same dyno. Same dyno, different day would be closer.