6.3L, 470 HP, naturally aspirated?? Hmmm, slap on a blower .....

.....

Wonder if that'll find its way into the "Blue Devil" Corvette??

Even that motor (NA) would be a good fit for the "top" Camaro .

 

Tq is overrated anyway. The peak Tq number is not meaningful, as 4,000 ft lbs @ 2500 rpm does you little good when most racing occurs between 3000-6000 rpm. The overall tq curve and the RPM at which peak occurs is far more important.

 

In regards to air flow, what is the advantage here: Velocity or Volume?

The first thing that concerns me is the durability of this design...the increase in moving parts seems significant. Its a completely new design and untested. The second thing that concerns me are the aftermarket options for this setup. How difficult will it be to swap camshafts? How long will it take before vendors are able to produce cams/lifters/valves for these heads?

Hopefully someone in the know will pipe in.

EDIT: Maybe durability won't be that bad after all...yes, there is another set of horizontal push rods, another set of valves and rockers, but everything seems to be shaft mounted. I just wonder how valve lash is dealt with on that third valve. It doesn't appear that it can be hydraulic. Noise issues?

 

I highly doubt those numbers are correct. The LS1 had 375 ft/lbs torque at 5.7 litres. You expect me to believe that a 6.3 litre engine is going to have only 10 more ft/lbs of torque? That makes absolutely no sense at all.

Either the numbers are completely wrong, or someone is getting a little too anxious with their reporting.

 

What I'm thinking

 

What if this wasn't a 6.3 L but it was a 5.3 L? And it was still making that kinda power?

No winkie just thinking outloud.

 

sounds reasonable to me since the origional post says that the 3 valve design gives 13-18% more hp than 2 valve. that comes out to something like 61-81 extra hp. plz correct my #'s if they're wrong

 

Werent these pics floating around before the LS2 came out? They look very familiar.

 

Even a 340 hp motor would not get 470 hp w/ 18% power gain. I guess it is a 6.3.

 

Guys, this thing is spinning up to 6700rpms!! and still making good torque. Would you like GM to stop the dyno test at about 6000rpm so the hp is only 420? 420hp 385lbft sounds more like it right? Its because the engine is able to spin to such a higher rpm, the hp is also much higher than the torque. Remember, HP=(tq*rpm)/5252. More rpm, hp goes up.
I just hope that the torque curve is relativly flat. That torque peak is pretty up there.

 

I would love an engine the revved to 6700. Mmmmmmm.

 

Didn't we see something like this a while back with an indication that it was headed for the Escalade? Tall intake and all...

Help me out here.

 

no that's just where peak hp is. it will go higher.

 

Interesting technology but the torque peak is too high unless the curve is table top flat and the heads are huge and look heavy.

 

Actually, I recall reading that 'this' engine revs to 7000rpm with a 30% safety factor built into it. See here:

http://www.sae.org/automag/techbrief...1-111-9-26.pdf