Katech_Zach

We have completed valvetrain stability testing on our LT1 camshaft and finalized our Head/Cam package. This camshaft is extremely mild and very streetable.

Stage 2
600hp
523lb-ft
Halltech C7 carbon fiber air intake system
CNC port throttle body
MSD Atomic Air Force LT1 intake manifold
Katech Camshaft
VVT limiter
Katech CNC ported cylinder heads
Katech AFM delete billet valley cover
High speed lifters
High Lift valve springs
Valve spring locators
Intake valve seals
Exhaust valve seals
Titanium valve spring retainers
C5-R timing chain
160 thermostat
Chassis dyno calibration
Serialized plaque
Price: $8,999

Katech valve covers and coil relocation kit optional

CNB

Very nice! That combination will really wake up with some headers!

marcouvo

That's with headers, according to the Katech website.

http://katechengines.com/performance...s/c7-corvette/

Katech_Zach

Just for clarification, the 509rwhp chassis dyno sheet posted was for a car without headers.

leadville1

I see your recipe includes an MSD intake did you guys test the before and after with this set up, curious if it was a difference maker, the pictures look like a stock cover on on the manifold not the MSD one.

Higgs Boson

Why do you run a 160 thermostat? Everyone knows they don't do anything and they are bad for your engine.

Katech_Zach

Yes. It makes a huge difference. The photos were taken before the intake was tested.

leadville1

Anything you can share as to how much it added?

My car made similar horsepower as this one but I did have headers but no intake manifold.

marcouvo

No headers on this car explains the additional 30 ft-lbs torque for the website car, which listed headers.

That's more HP from a mild cam than what I've seen on here, so part of that increase must be the MSD intake manifold.

Oops, sorry, didn't see the 523 ft-lbs above. The website lists 533 ft-lbs, so looks like the headers were worth 10 ft-lbs.

Nataphen

I'm sorry for digging this thread up, but I'm curious if any testing has been done with this combination and long tubes. I love that it doesn't seem to lose much down low, but still pulls very well to 7,000+. Most cams seem to shift the curve way more to the right than this. Thank you for the information that you've posted!

Katech_Zach

The engine dyno test was done with dyno headers inititally to develop the camshaft. The final package was tested on the chassis dyno by the time the production MSD intake came out and that car was not equipped with headers. It made 509rwhp. We have not tested a car on the chassis dyno that has headers.

Nataphen

With headers and E85, another 40-50whp would be very possible then. That's incredible with a mild cam setup. Do you happen to have any videos of the idle? I'd like to keep the idle pretty tame to keep from burning up cats.

7LitreC5

I'd like to see an idle video as well if it is available.

Nataphen

So, this LT1 cam sounds just like this Z06 at idle? I'm not sure I follow.

Katech_Zach

Sorry. Wrong videos. I'm pulled in too many directions today. Let me see if I can find the videos I was thinking of.

Nataphen

You don't have to run through yourself for a video. I'm basically just trying to find out if it's safe for cats. Don't want to dump too much fuel at idle and melt them.

Katech_Zach

All four cats have been on this car with this cam for about a year.

Here is the video.

123sugey

Pretty good power with a pretty soft cam. I know there is lots of work on the C7's when doing heads and cam.... But is it ?!? A smarter choice to to a stroker when spending lots of cash ? Not bashing at all... I'm a guy that will spend $2,000.00 to get the last 5hp. My 15 A8 is still stock. I'll pull the trigger at some point. Waiting for the correct time.

marcouvo

Valid questions IMO. My 2015 A8 is stock except for a Trifecta tune, and I'm leaning towards the stroker route. I estimate the additional stroker cost over heads & cam is worth it for a street car that don't get beat on drag racing a lot, so long as a guy got the extra cash.

Nataphen

Thanks so much! I'm amazed by how mild the idle is, the car practically sounds stock. I think this is the perfect setup for me. I've been searching for days on end for a combination that keeps most of the low end torque, increases the usable power band, and is catalyst and wife friendly. Check, check, and check.