# smaller intake valve ports more power and flow? **URL:** https://forums.speedlife.net/t/smaller-intake-valve-ports-more-power-and-flow/266545 **Category:** Shift518 Automotive **Created:** [March 18, 2013, 9:51am UTC](https://forums.speedlife.net/t/smaller-intake-valve-ports-more-power-and-flow/266545 "2013-03-18T09:51:11Z") **Posts on this page:** 1 **Showing post:** 4
### Author: ![pitman](https://avatars.discourse-cdn.com/v4/letter/p/4da419/32.png) [@pitman](https://forums.speedlife.net/u/pitman) #### Post date: [March 20, 2013, 6:12pm UTC](https://forums.speedlife.net/t/smaller-intake-valve-ports-more-power-and-flow/266545/4 "2013-03-20T18:12:56Z")
> [@Fuel pressure constantly changing](https://forums.speedlife.net/t/fuel-pressure-constantly-changing/52053/2): > > There’s WAY more involved in determining this. Way more. More than I care to post here on this forum. > > Smaller valves doesn’t mean more power > Bigger valves doesn’t mean more power > Velocity change doesn’t mean more power > > It’s what’s done TO the motor that necessitates and determines what the valve port size, shape, and length SHOULD be for the given parameters the motor is designed for. This is the most complicated and developed part of an engine design, only in comparison to that of maybe the thermal dynamics of the engine itself. > > Far more in determining this than just what posted in those pages. i just wanted to post this so people dont think porting the head is guaranteed power. just becasue a head flows better on a flow bench does not mean it makes more power. your post is good. and i agree its a important part of the engine design. i would just like more opnions on this for all motor cars. say everything else was the same but ports were samller on the same engine would that make more power? i know theres alot to consider but what other info is needed to tell if smaller valves make more power? --- _[View the full topic](https://forums.speedlife.net/t/smaller-intake-valve-ports-more-power-and-flow/266545)._