400 whp on N/A VQ possible?

Jordo! · 12-01-2014, 03:17 PM

Quote:

Originally Posted by Elmo370z

Bringing back this old thread. Producing 400 N/A whp on a stock block isn't to far fetched after all. With my original thought of keeping the cost under 10K isn't possible with all of custom or 1 0ff parts having to be purchased. Thanks to 1slow370z for pushing the envelope, guess time will tell how far the stock block. Lets see if the motor can spin 9,000 RPM's and make 400whp.

To rev that high it would still need a lot more work -- now we're talking stock block with all new reciprocating parts, different valve train. Look how much went into 1slow's build, and that's without touching the valves (EDIT: although he did swap out the exhaust cam --I forgot about that!) or the rods, pistons, etc.

So yes, everything 1slow did PLUS open the engine, replace with completely different internals, custom valvetrain (more complex due to VVEL), run E85 or very high AKI petrol etc. This is pretty much what was said previously, tho'...

Honestly, if you really want a Z that could be a monster off the line, with 400+whp, and a table top flat torque curve starting off idle, no high rev's or dry sump needed, someone needs to figure out how to make a roots or twin-screw blower work.

If that could be sorted out, it would feel like a N/A V8 and absolutely be a DD beast -- note all the roots blown pony cars and how fast they are...

We've seen great results with TT's and centrifugal blowers, but there's a reason why OEM's use roots type S/C's for their road cars -- it makes the engine perform like a larger version of itself -- no lag, just immediate torque.

You'd need (I think), a clutch type engagement roots or twin-screw blower, a new IM, maybe with laminova A2W coolers (or W/M inj.), probably a different hood, and a tune -- DONE. No high revs or complete overhauls needed, and almost certainly OEM cam.

Throw in headers (bigger primary shorts or LTH's) and it would be a monster. The peak torque and power levels might be kept more modest relative to turbine-type blowers to preserve things like weaker high gears on the AT, but whether AT or MT, it would feel like you stuffed a 5.0 in there when you hit the gas.