No Replacement For Displacement?

[Broosedamoose]

So, I'm not looking to start an argument here! I'm just looking for the logic behind this and if it still applies in todays engines. My 4.0L is said to make 207 Hp. and 238 Lbs. of torque. But, my wife's Highlander has a 3.5L and it makes 270 Hp. and 248 Lbs. of torque! So, less displacement and more Hp. Even with Headers, a cat back exhaust and a custom tune my truck still makes nowhere near that much Hp. So how can this be true?

 

[Uncle Gump]

Technology...

Things like variable cam timing... cylinder head flow rates... compression ratios... volumetric efficiency.

 

[Blmpkn]

Stroke & compression? Cam profile difference?

 

[ericbphoto]

Stickers and cup holders

 

[Dirtman]

Think that's baffling, a ford 7.5L (460) V8 only made 245 horse in it's last production year....

Technology makes things go vroom better.

 

[19Walt93]

A 3.5 EcoBoost makes over 400 hp in some tunes, my son's 2.7 EcoBoost Fusion is 325 hp, my 2.0 EcoBoost Escape is 240-280( I forget which). Note that the torque is only 10 lb/ft higher? If the torque peak is higher it would feel doggy in a heavy vehicle. Talking about horsepower is one thing, what you feel accelerating is torque.

 

[85_Ranger4x4]

Think that's baffling, a ford 7.5L (460) V8 only made 245 horse in it's last production year....

Technology makes things go vroom better.

I read somewhere that the stock heads on a 460 flowed about right for a 302...

 

[Dirtman]

They had to get that old dinosaur to pass a smog test somehow...

 

[85_Ranger4x4]

They had to get that old dinosaur to pass a smog test somehow...

Ford heads were a weakness for a long time.

If 460 heads were about ideal for a 302 where does that leave the 302?

But they were also trying to squeeze all the torque they could out of the for truck applications which is usually counter to getting max power.

 

[Blmpkn]

So, I'm not looking to start an argument here! I'm just looking for the logic behind this and if it still applies in todays engines. My 4.0L is said to make 207 Hp. and 238 Lbs. of torque. But, my wife's Highlander has a 3.5L and it makes 270 Hp. and 248 Lbs. of torque! So, less displacement and more Hp. Even with Headers, a cat back exhaust and a custom tune my truck still makes nowhere near that much Hp. So how can this be true?

What year is the highlander, and what year is your truck?

Right off the bat I see that the yotas motor is 4 valves per cylinder, the ranger only 2.

The ranger motor could only be 9:1 CR and the yota depending on year could apparently be as high as 11.8:1. Those two things alone would make a good difference.

 

[DILLARD000]

Racing Stripes!

 

[85_Ranger4x4]

What year is the highlander, and what year is your truck?

Right off the bat I see that the yotas motor is 4 valves per cylinder, the ranger only 2.

The ranger motor could only be 9:1 CR and the yota depending on year could apparently be as high as 11.8:1. Those two things alone would make a good difference.

Cosworth DOHC 24v 2.9 heads get the 4.0 in the ballpark.

4.0L DOHC 24V Cosworth V6 for 2005 Mustang

www.corral.net

4.0 OHV into 4.0 24v COSWORTH

As the topic. It's based upon a 93:ish 4.0 bottom end and the rest of the bits are from a 2.9i 24v BOB cosworth. Just missing a few bits to be able to put it all togehter. But here are a few old pics from how a few bits fit together.

www.explorerforum.com

In my rather uneducated opinion it is a shame Ford didn't do that instead of the 4.0 SOHC.

 

[pjtoledo]

the saying still holds true if you consider how modern engines displace more air due to design improvements.

 

[Blmpkn]

Cosworth DOHC 24v 2.9 heads get the 4.0 in the ballpark.

4.0L DOHC 24V Cosworth V6 for 2005 Mustang

www.corral.net

4.0 OHV into 4.0 24v COSWORTH

As the topic. It's based upon a 93:ish 4.0 bottom end and the rest of the bits are from a 2.9i 24v BOB cosworth. Just missing a few bits to be able to put it all togehter. But here are a few old pics from how a few bits fit together.

www.explorerforum.com

In my rather uneducated opinion it is a shame Ford didn't do that instead of the 4.0 SOHC.

It's a shame ford didn't give us a lot of what they gave those limey shmucks back in the day.

 

[85_Ranger4x4]

It's a shame ford didn't give us a lot of what they gave those limey shmucks back in the day.

Cosworth isn't really Ford though.