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longer crank shaft, cylinders are pushing straight up and down not at a 45 degree angle.
 

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less friction within the motor because there are WAY less moving parts in an inline motor compared to a v motor
 

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It's the stroke length, mainly.

What truck has the most torque at the lowest RPM from the factory nowadays? Has the 6.7 taken that title back from the Duramax yet?
 

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less friction within the motor because there are WAY less moving parts in an inline motor compared to a v motor
so a V6 has more moving parts then a straight 6 ??
 

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so a V6 has more moving parts then a straight 6 ??
it depends. like the older v-6's were essentially small block chevy v-8's with 2 cylinders chopped off.

now, you can have single or double overhead cams, and that changes everything. also, the number of valves per cylinder.

4 valves per cylinder tend to have more top end flow than the traditional 2 valve combo.
 

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less friction within the motor because there are WAY less moving parts in an inline motor compared to a v motor
:rof:rof:rof :lol3:

how is that even possible? They both have equal number of valves, lifters, rocker arms, connecting rods, pistons, injectors, etc.
 

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:rof:rof:rof :lol3:

how is that even possible? They both have equal number of valves, lifters, rocker arms, connecting rods, pistons, injectors, etc.
that was the point i was trying to make :thud:
 

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its true there are fewer moving parts in a inline motor.

when they originally came up with the v8 confirguration it was to optimize space as you can only build an engine soo long before it becomes rediculous so if you put the cylinders beside each other or essentially two inline motors connected together then you can get more cylinders into the engine bay.

with diesel and sending the exhaust to a turbo it is optimal to do it in a inline confguration. and the 6 cylinders is because a 4 stroke motor is internally balanced with every 3rd cylinder.
 

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I think he was talking compared to a v-8 as thats what the title is..
 

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to compare apples to apples...a V motor and a inline motor has all the same moving parts

crank
pistons
connecting rods
lifters
push rods
valves
rocker arms
valve springs
cam
Etc.
 

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wouldn't there be two cams in a v-8 though?
not unless it was a dual over head cam motor

conventional V8 there is only 1 cam :thumbsup
 

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With the L6 over a V8 you are reducing the need for a 2nd set of cams if you have DOHC since you have only one head. You also are loosing 2 cylinders so everything associated with those cylinders is not goin to be needed. You also don't need to have those 2 extra fuel injectors so the computer wont need to do as many calculations in a second.
As far as a V6 vs L6 you only need one header and one head vs 2, you also only need one cam for SOHC.
 

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The I6 will have a little less friction due to the parts going straight up and down vs. outward up and down. The V engines have friction from the weight of gravity on the rods and pistons, pulling them down against the outer side of the cylinders. But it's not much more friction.

I6 engines get thier TQ from having such a long stroke. Any diesel (good diesel) has a relatively long stroke when compared to a gasser. That's why they push very few RPM's compared to a gasser. Also why the Cummins lasts longer than the flowerpoke and durasnatch. Less RPM= less wear on internals.
 

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If a v8 is essentially 2 straight 4 cylinder engines running at a 45 degree angle it would by default have more parts. I'm looking at a diagram of the powerstroke and the cummins and the cummins is way simpler of a design with less parts.
 
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