What's the Sweet Spot (RPM) for the 2.3L & 2.7L?

[The Pope]

For NA V8's it's basically 3000RPM.

So, for the 2.3L & 2.7L, what's the Sweet Spot?

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[Spooled]

Very broad statement on the V8... The sweet spot on a Coyote and sweet spot on a LS7 are very different.

If your definition of sweet spot is peak torque, then it's 3,000 for the 2.3 and 2,750 for the 2.7

 

[The Pope]

I was thinking more like older V8's (289/302/351W/351C/400M/427/428/429/460).

Thanks for your response. Just wanted this information to assist me in determining which Tire Size & Gear Ratio to get.

By knowing the Sweet Spot and at what Speed you normally drive at, you can crunch the numbers to find a combination (Tire Size/Gear Ratio) that falls a little below the Sweet Spot. This "should" allow for best fuel economy and still have some torque available on reserve for hills and such (without downshifting).

Well... this is my thoughts on it. If anyone has a different thought about it, please post up, as I have been wrong before.

 

[D K]

They are very different. The 2.7 (at least on the F150) makes torque much lower RPM than either the 2.3 or the 3.5.
Probably because its a direct to head turbo.

 

[Spooled]

I was thinking more like older V8's (289/302/351W/351C/400M/427/428/429/460).

Thanks for your response. Just wanted this information to assist me in determining which Tire Size & Gear Ratio to get.

By knowing the Sweet Spot and at what Speed you normally drive at, you can crunch the numbers to find a combination (Tire Size/Gear Ratio) that falls a little below the Sweet Spot. This "should" allow for best fuel economy and still have some torque available on reserve for hills and such (without downshifting).

Well... this is my thoughts on it. If anyone has a different thought about it, please post up, as I have been wrong before.

For the Bronco and any other vehicle with the 10 speed, pairing axle ratio and tire size doesn't matter as much as it used to. with 10 closely spaced gears, there will almost always be a correct gear for the job. Pairing the wrong axle ratio with a 4 speed and big tires was devastating not long ago. I've posted this info in another thread, but in 10th gear, with the 4.7 ratio, and with the 315's equals out to 2019rpm at 70mph. If you want the manual, we don't know it's ratios yet.

 

[Cased]

Or if you drive more like me

 

[D K]

anyone know what the transfer case low gear is? Still 2.73:1?

and the 1st gear ratio for that matter?

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