GEN 2 Ecoboost 3.5 HO Details

[TMW!]

I know that the HO version has a shorter stroke which reduces the CR to 10:1. However what are the other intimate and important differences that make this engine different than one in a King Ranch or Lariat?

Do the heads flow better?

Are the cam shafts different?

Is the intake and Throttle body different?

Turbos- are they bigger or have different impellers?

Also, are the blocks aluminum or compact graphite?





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[SilverBolt]

Shorter stroke??? Not likely. Different pistons perhaps.

 

[TMW!]

It has a shorter rod length. It's in the Ford Website


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[CatchMeOffroad]

I know that the HO version has a shorter stroke which reduces the CR to 10:1. However what are the other intimate and important differences that make this engine different than one in a King Ranch or Lariat?

Do the heads flow better?

Are the cam shafts different?

Is the intake and Throttle body different?

Turbos- are they bigger or have different impellers?

Also, are the blocks aluminum or compact graphite?





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I also am very interested in this same question.

 

[Truckzor]

It has a shorter rod length. It's in the Ford Website


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That doesn't mean shorter stroke.

 

[TMW!]

That doesn't mean shorter stroke.

If the crank is the same it does.


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[xrocket21]

If the crank is the same it does.


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Stroke is the distance the piston travels, and this is determined by the crank. The stroke may be the same, but the displacement/compression ratio may be altered by changing the length of the rod.

 

[Hamm3r]

If the crank is the same it does.


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Nope. Crank affects stroke, not the rod.

 

[TMW!]

Let's talk about the heads and cam etc. The rods are indeed shorter, if the stroke is the same great.

Do you guys know anymore?


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[Supertuner700]

Shorter rod could just mean different pin placement on the piston and may equal the same stroke