Even though forced induction is all the rage these days, we still can’t get enough of a naturally aspirated engine. Especially the 2015 C7 Corvette and its incredible LT1 6.2-liter small block V8.
But as petrolheads, gearheads, car guys, whatever you call yourself, we need to upgrade our vehicles for faster track times, better driver feel and are always in the pursuit of more power. Katech is ready to help us out there with their Street Attack and Track Attack packages for the 2015 C7 Corvette.
Best of all? You get to keep the naturally aspirated LT1 V8. As if that didn’t your  attention, if you missed the headline, these two packages offer 650 hp without forced induction. That figure is achieved through the following performance upgrades, as provided from Katech:
- 427ci Street Attack LT1 engine
- Forged 4340 crankshaft
- Forged H-beam rods
- Forged 2618 pistons
- Halltech C7 carbon fiber air intake system
- Katech Camshaft
- VVT limiter
- 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
- LT1 long stroke piston squirters
- Katech CNC-ported heads
- Chassis dyno calibration
Apparently, it’s quite a bit of work to achieve those numbers without forced induction, but the fact Katech is up for the challenge delights us. There is one hiccup, though. Studying the offerings shows availability for the Street Attack package for February 2014. As you know, we’re living in 2015. Hopefully this is a typo, and Katech hasn’t gotten our hopes up for no reason.
Would you rather the forced-induced power from the LT4 supercharged small block V8, or would you prefer the naturally aspirated route with the Katech upgrade listed? Let us know down below what you’d prefer.
Comments
Forced induction all the way. I doubt torque numbers of the NA will match the LT4 supercharged.
this is a great way to go . Lighter . I would love have one
In a short race environment (a sprint) I’ll take the NA throttle response, no one torques there way around a short race when in the lead. In a long race environment (endurance) the torque as in the P1 (diesel) class, steady as you go (no mistakes) wins the game.
I guess its a toss up with me, now was it, “left to Nürburgring” ? ? ?
ooh well, the So Cal tracks, and (Laguna Seca) will have to do for now, again!
P.S. what a great time to be alive!!!
Having an engine by them is like having an engine built by Tradco or Andial.
Katech is a part of GM and Corvette history and would prove to be a real good package to have now to drive and in the future for collectability.
Add this engine the C7R package GM is coming out with and you would have a real collectors car but one so very fun to drive.
We have been working on this for the past year and have achieved over 700hp.
http://www.hotrod.com/how-to/engine/1504-how-to-build-a-z06-corvette-slaying-lt1-small-block-without-a-supercharger/
I still believe that there is no replacement for displacement. Although I own a new Z06 with the LT4 engine, and it runs quite well, I would have preferred a big inch NA engine. Wish Chevrolet would offer a 427 NA engine as an option to the LT4 supercharged engine.
You can’t go wrong with either option. It would be awesome either way.
Horsepower is horsepower. Let’s see some performance stats and the final cost.
Can’t imagine the resale value and warranty will compare to the Z06. Seems great however and probably better throttle response without FI.
Big cube NA every time!