# How VTEC actually works

**URL:** <https://forums.speedlife.net/t/how-vtec-actually-works/188841>\
**Category:** PittSpeed Off Topic\
**Created:** [March 26, 2007, 6:18pm UTC](https://forums.speedlife.net/t/how-vtec-actually-works/188841 "2007-03-26T18:18:41Z")\
**Posts on this page:** 1\
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**Author:** ![Hycomp](https://avatars.discourse-cdn.com/v4/letter/h/d6d6ee/32.png) [@Hycomp](https://forums.speedlife.net/u/Hycomp)\
**Post date:** [March 27, 2007, 2:17pm UTC](https://forums.speedlife.net/t/how-vtec-actually-works/188841/21 "2007-03-27T14:17:31Z")

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> [@FS: 93' 240SX S13 SR20 Redtop...SOLD](https://forums.speedlife.net/t/fs-93-240sx-s13-sr20-redtop-sold/27978/72):
>
> A 3.8 Liter v8 with DOHC VTEC would be about 250 lb-ft tq and 400 hp, rev to 8K and would sound like a Ferrari v8?

Here’s the specs on one of the naturally aspirated Mugen V8 race motors. Lots of rumors of that the replacement for the NSX will be sporting a street version of this set-up. 400hp and 250+ tq out of a 4.0 would defintely be doable.

Mugen MF408S engine  
Debuting in the 2002 ALMS (American Le Mans Series), this 4 liter V8 engine has seen action every year since then. In 2004, it was used in the JGTC Series by the VEMAC RD408R GT500 class racing machine.

Specs for the MF408S in the VEMAC RD408R

Layout: 90 degree V8 Naturally Aspirated  
Displacement: 4000cc  
Horsepower: 590hp / 9500rpm  
torque: 383lb/ft / 7500rpm

Also, theres some pics on this page of the engine above fitted into a Japanese Legend (aka Acura RL in the US)

[http://www.vtec.net/news/news-item?news\_item\_id=319284](http://www.vtec.net/news/news-item?news_item_id=319284)

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