Katech_Zach

Katech customers are very loyal.Once they realize the high level of craftsmanship and pride Katech employees have, they come back for repeat business. In this instance a customer came to us for a Street Attack build. Katech Performance built him an engine based on the existing LS7 platform; he then preceded to road race the car. After attending several Katech Track Attack events and logging over 40 hours, the customer was hooked on road racing and the engine was ready for a rebuild. Instead of going to another engine builder the customer came back for another build, a full race Track Attack LS7.



A build of this magnitude fits well with Katech, as we are experienced with building cars of this stature. Katech became famous in endurance road-racing by winning 24 hour races such as Daytona and Le Mans. This is no small feat as engines have to be extremely durable, yet maintain great power throughout the duration of the race and beyond.



To bring the build to the next level and turn this Corvette into a full Track Attack Z06 Katech scrapped the LS7 and went with a completely different engine. A strong block had to be selected, so we went with a RHS LS race block which has priority main oiling and allows the main bearings to see oil before it goes to the cam and valvetrain. This block is made of a heavy-duty A357-T6 Aluminum, which is much stronger than the softer material used in the factory LS7 block. The RHS cylinder case has added crank clearance if a customer wants to increase stroke up to 4.600”. A Callies Compstar crankshaft and H-beam rods were used with forged pistons that are cooled by oil squirters. The camshaft of choice for this engine is GM stage 3. It has been proven to provide a stable valvetrain and make great power. An ARE pump and pan are used to combat oil starvation experienced in high lateral-g turns. To supply air and fuel LS7 cylinder heads and a FAST 102mm intake are fed by a huge billet throttle body and injectors. This combination made 644 HP on Katech’s engine dyno and is track ready.




Mike Kasatkin, Marketing dept.




Katech Track Attack LS7/RHS
RHS Block
Callies crankshaft
Callies H-beam rods
Forged 2618 pistons
DLC pins
Piston squirters
Katech HCS/HCP "red" oil pump
ARE Stage 3 dry sump system
Head studs
Main studs
GM Stage 3 camshaft
WCCH LS7 heads
Bronze valve guides
Katech Ti/Mo intake valves
LS7 exhaust valves
Katech Ti retainers
Trend Pushrods
Halltech CF112 air intake system
FAST LSXR 102mm intake
NW102mm TB
ATI damper
Katech billet fuel rails and installation kit
Katech aluminum valve covers
Katech coil relocation
Katech billet belt tensioner
Katech LS9X clutch
Katech remote clutch bleeder
Turn One power steering pump

Previously equipped:
Brembo GT brakes
Moton coil-overs
Pfadt sway bars
Pratt & Miller C6RS seats
Halltech GT2 hood

sky1

Wow what a piece.Nice build and great looks!

Everett Ogilvie

Nice cam choice, although I may be a bit biased in that opinion!

BigMike NY

RHS LS Race Block

Painrace

SWEET!

I am looking forward to seeing it run Sean!

JIm

wstaab

Valve springs used?
Rocker arms?
Picture of the Turn One PS pump and pulley?

Poor-sha

Me too Jim. Now I just need to get away from work long enough to pick it up. The anticipation is killing me!

kentz06

Sean, that is a thing of beauty that Katech has built for you! So have you installed a full cage in your car?

I decided to not install the GM Stage 3 cam due to concerns about street drivability. Let me know how it acts once you have a few miles in.

Enjoy!

Dean

kentz06

So Everett, did you have a Stage 3 cam in your Mosler when I drove it at TA, or did that arrive later?

Dean

4GS7

Goddamn, I need that exact car. Plus your spoiler and a set of Forgelines.

Poor-sha

Dean, will do. I have to admit that its a bit odd going from the exedy to ls9x clutch for better driveability but then going to the stage 3 cam. Jason swears it isn't bad with how Vector tunes them now.

4GS7

I thought Katech did all of their tuning in-house.

Everett Ogilvie

I used to drive it on the street and it only took a brief time to get used to it. I would never go smaller.

Just wait till you drive it next time.....

Mookster

Must be nice to be baller-sha with unlimited funds

Gering

Short-Throw

Sean,

Take your time, the car is at Autobahn going through some 'easy ' testing to make sure it's up to snuff.

Would like like me to bed in your brakes again?

The car looks great and the build sheet is a smorgasbord of high end products!!

Mike

DaOtherOne

That car is going to be fast

tim414

Nice.
My fav color (now) to boot.

VGLNTE1

why a rebuild after 40 hours?

Werks

You do realize that 40 hours of racing use is like doing 2x 24hrs of LeMans races back to back. Even finishing one of those is an accomplishment for a built motor, let alone two. Jason can speak better about this but 40 hours of racing use is probably an equal amount of stress as 30-40k miles of street use.