Dre01SS

Got my 07 Z back from Vengeance today after WCCH + Tune, and happy as always with Vengeance. Car drives like stock, only mod is K&N intake and had the exhaust butterflies left open all times: 510rwhp/470rwtq

Given the car was bought used, I wanted to get the heads done ASAP, and have been behaving one could say, when it came to driving it. The drive leaving Vengeance today has been the best yet, truly enjoying the 427 - Road Atlanta in a few weeks now!

Thanks again Ron, Kevin, and Mike!

Here's the dyno sheet:

FrankTank

Wow , so stock cam and manifolds , you had the WCCH stage 2 with CNc porting tune and that's it ?

'06 Quicksilver Z06

Nice results, and you got the valve train issue addressed to boot.

Vengeance is doing some great things.

beale

I would love to know more as well. Was there any milling done to the heads? I assume the car was on the stock tune before the head swap?

No matter what, those are some great results!

Dirty Howie

Nice !!

Standard SS valves/bronze guides/dual springs ??


DH

LT5 John

WOW, some nice numbers...And piece of mind...There a great combination...

MarkC

You can't beat the Vengeance Racing solution to the valve issue. One day service, cost and results are the way to go. Another example of WCCH porting getting results.

Dre01SS

Yessir!
That's correct, WCCH Stage 2 package + Vengeance Dual Spring Kit wit Ti Retainers

This is the 3rd LSX vehicle they've worked on for me, and I've always left the shop more than pleased with both results, and service.

FrankTank

I've seen a few other cars they've tuned like yours, but they had a CAI, not that that makes a huge difference, I am just surprised you hit over 500RWHP with only a tune and ported heads ...don't get me wrong, not knocking your results, my car will have the same heads you have plus tune, CAI and headers, so if anything its encouraging, but I've also seen a number of comments where people are saying Porting has minimal gains for the $$$.

Glad you got such good results either way

Dre01SS

The car does have an intake, K&N series 63 I think. I've honestly spent no time looking at it since I've purchased the car other than make sure the filter was in good condition.

Seems from most posts, 495-505 is expected with the WCCH + Tune on manifolds. I'm not worried about it nonetheless, we'd be splitting hairs talking about peak numbers... I need to improve my braking zone/corner speed more than gain extra ponies.

spicytuna

That's what I was thinking too, which is why I created that thread last week.

I concluded that 90% of the gains were actually from the tune. In other words, if you take a car which was dyno tuned, installed a set of ported heads and reran the tests again, you'd come out with maybe 5hp.

Of course future mods such as intake and headers will bring the heads to life.

FrankTank

all good! And I could not agree more, if you are into the track etc... HP is only one part of all the equation.

0Ron@Vengeance Racing

Not true at all.. We have performed back to back testing showing the WCCH Heads are worth approximately 20 to 25rwhp by installing them on a Z06 that was fully tuned and only optimizing the tune after the heads were on.

JChastain

Vengeance did a wcch head swap on my car milled .25, ported. Car picked up 33 rwhp. Noticeable seat of the pants for sure! My car is also cammed with headers. Put down 570. Base lined 476 with headers and tune for a comparison in total gains.

z0sicktanner

HoustonSVT

Ron, 20-25 rw with stock cam?

spicytuna

That's good to know but I'm guessing the car had other mods done to it like headers and intake?

0Ron@Vengeance Racing

Yessir. If you look at the graph above I would attribute half of the gain to the tune and the other half to the cylinder head upgrade.

93Polo

Congrats Dre and Ron Good #s, It'd be interesting to see what Long Tubes and then a FAST would do without a cam.

J.J.D.O.