Where is the powerband on the 3.4?

fo_runner · 10-11-2005, 09:21 PM

Hey yotatechers, let me just start off by saying the 3.4 is the greatest V6 truck engine I ever drove. Hands down, this motor is much, much better than the its 15 year-old father, the 3.0. Ever since I first drove the 3.4, it was like a 3.0 on steroids, but its bone stock

After perfoming a; minor tune-up, air-box-lid MOD, and adding a k&N filter, she really starts to "fly" and pull hard!

After these MOD's, the idle strted to pick up alittle bit (900 RPM), better than the previous (500 RPM) I geuss. Is this because of the added airflow from the intake? Plus, the engine seems to feel more "Peppy" at 2000 RPM. Where is the powerband on the 3.4? It seems to me like around 2500 RPM, am I right?

Thanks for the info,

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paddlenbike · 10-11-2005, 09:24 PM

I believe the torque peak is 3600 RPMs and mine moves pretty well at that RPM. The low end torque on the 3.4 is a lot better than the 3.0 but in my opinion the 3.0 pulls better on the top end. My 3.4 is pretty much done at just before 5000 RPMs.

CoedNaked · 10-11-2005, 09:30 PM

Ironically I thought most people thought the 3.0 was a much torquier motor than the 3.4. I know the 3.4 has a lot more torque than the 3.0, but the 3.0 for what it is, is a relatively torquey motor in my opinion anyways. The 3.0 in my truck, which is bone stock, seems to choke out in the upper rpm band. What I personally attribute to, anyways, the fact that the exhaust manifold is a little restrictive and it backs up a bit maybe choking out the engine preventing it from really pulling hard in the higher rpm band because it can't exhaust, the exhaust, as fast as it could/should. Consequently I don't generally rev my truck past 4000, and rarely past 3200 say unless I'm on the highway or hammering the throttle to pass someone or something. It's mainly becuase I don't see any advantage to hammering it any harder than say 3200-3500 rpm's. The engine doesn't seem to pull any harder or move any faster. I think once I put an aftermarket exhaust on my truck will it really start to pull in the upper rpm band though from whom I know, what I've read and hear. I guess we'll see sometime in the Springtime.

Toysrme · 10-11-2005, 10:01 PM

http://www.geocities.com/MotorCity/P...neEngines.html

***midiwall*** · 10-11-2005, 11:47 PM

Quote:

Originally Posted by fo_runner

Where is the powerband on the 3.4? It seems to me like around 2500 RPM, am I right?

There's a LOT of info around here about this, but in short... Given the mods that you've done so far, yes, the 3.4 will show it's best kick around 2500 rpm.

That will change based on a number of things...

If you change the exhaust components (one or more of adding headers, add a highflow cat, or a highflow muffler); change the size of the exhaust piping (up or down from the stock 2.25"); increasing air flow (like you found, but more radically like with a supercharger); adjusting the timing (requires a "piggy back" box); and a couple of other things.

Flamedx4 · 10-12-2005, 09:52 AM

Power Band for a 3.4

10-11-2005, 09:24 PM	#2 (permalink)
paddlenbike Registered User Join Date: Jul 2002 Location: Sacramento, CA Posts: 1,051	I believe the torque peak is 3600 RPMs and mine moves pretty well at that RPM. The low end torque on the 3.4 is a lot better than the 3.0 but in my opinion the 3.0 pulls better on the top end. My 3.4 is pretty much done at just before 5000 RPMs. __________________ 2000 4Runner SR5 V6 4WD \| 5-speed \| E-locker \| Tundra/OME lift \| Stubbs Sliders \| Deckplate/TrueFlow \| Yakima rack \| Click here for specs & pics

10-11-2005, 09:30 PM	#3 (permalink)
CoedNaked Registered User Join Date: Apr 2004 Location: Vancouver, British Columbia, Canada Posts: 1,473	Ironically I thought most people thought the 3.0 was a much torquier motor than the 3.4. I know the 3.4 has a lot more torque than the 3.0, but the 3.0 for what it is, is a relatively torquey motor in my opinion anyways. The 3.0 in my truck, which is bone stock, seems to choke out in the upper rpm band. What I personally attribute to, anyways, the fact that the exhaust manifold is a little restrictive and it backs up a bit maybe choking out the engine preventing it from really pulling hard in the higher rpm band because it can't exhaust, the exhaust, as fast as it could/should. Consequently I don't generally rev my truck past 4000, and rarely past 3200 say unless I'm on the highway or hammering the throttle to pass someone or something. It's mainly becuase I don't see any advantage to hammering it any harder than say 3200-3500 rpm's. The engine doesn't seem to pull any harder or move any faster. I think once I put an aftermarket exhaust on my truck will it really start to pull in the upper rpm band though from whom I know, what I've read and hear. I guess we'll see sometime in the Springtime. __________________ 1993 Xtra Cab Pickup \| 4x4 \| 3.0 - V6 \| R150F \| Silver-Grey \| Amsoil 10w30 synthetic oil \| Amsoil Synthetic Drivetrain fluids\| Borla Cat-back Exhaust \| OME HD Leaf Springs \| Bilstein HD Shocks \| Downey Idler Arm Brace \| Grey Husky Liners \| SR5 Bucket Seat Swap \| Color matched Canopy \| Yakima racks \| Line-X OTR \| Michelin LTX A/T 31 x 10.5 x 15 \| 323,600 KM's (202,250 miles) \| Made in Japan - Vin starts with "J"\| Fish on

10-11-2005, 10:01 PM	#4 (permalink)
Toysrme Registered User Join Date: Jun 2004 Posts: 271	http://www.geocities.com/MotorCity/P...neEngines.html __________________ AIM/Yahoo/ICQ - Toysrme257th PM for anything, anytime; including v6 turbos! BoostPic!

10-12-2005, 09:52 AM	#6 (permalink)
Flamedx4 Registered User Join Date: May 2004 Location: 100 miles offshore as much as possible, & Springfield Oregon USA Posts: 3,285	Power Band for a 3.4 __________________ All my Yotas are gone. Stuff to sell: http://www.yotatech.com/showthread.p...39#post1009839 -Phil

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