Generation IV Internal Engine 2005-2014 LS2 | LS3 | LS7 | L92 | LS9

4.125" stroke in a LS2 block = ____ cu. "

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Old May 13, 2006 | 09:54 AM
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Default 4.125" stroke in a LS2 block = ____ cu. "

I was wandering how many cubic inches I would have putting my crank in a LS2 block?
I currently have a 395" stroker and was wanting to get to at least 520 rwhp.
Thanks
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Old May 13, 2006 | 10:01 AM
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Originally Posted by David Gordon
I was wandering how many cubic inches I would have putting my crank in a LS2 block?
I currently have a 395" stroker and was wanting to get to at least 520 rwhp.
Thanks
414


_
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Old May 13, 2006 | 10:07 AM
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Thanks.

What would be the normal power level I might achieve with this not going full race. I was even thinking of keeping my cam 240/244 610 112. I would like to get the best heads I could get though.
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Old May 13, 2006 | 11:39 PM
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Would a 4.125 or a 4.100 crank work well as far longevity? Any special conciderations?
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Old May 14, 2006 | 07:21 AM
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Volume of a cylinder = PI*R^2*H

Where Pi = 3.14, R=Bore/2, H=Stroke

So for a 4" Bore & a 4.125" stroke

(3.14)*(2^2)*(4.125) = 51.81 cubic inches per cylinder

51.81 * 8cylinders = 414ci.
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Old May 14, 2006 | 09:58 AM
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Im building a aluminum LS2 418cid. 6.8L , 4.100" crank & 6.125" rods and 4.030" bore.
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Old May 14, 2006 | 10:54 AM
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A goal of mine is to build a 427 out of an LS2 one day

4.060 bore x 4.125 stroke
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Old May 14, 2006 | 11:01 AM
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That is where the L92 block will shine. Its stock bore is 4.060 or 4.065
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Old May 14, 2006 | 11:05 AM
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Originally Posted by Rock_Daddy
That is where the L92 block will shine. Its stock bore is 4.060 or 4.065
What! nice, thats gona be sick!
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Old May 14, 2006 | 11:08 AM
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Will it be aluminum or iron?
I already have the 4.125 crank and rods.
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Old May 14, 2006 | 11:28 AM
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It's AL just like most of the LS family. There is lots of into in the sticky's of this forum. Everyone is waiting for them to become available.
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Old May 14, 2006 | 12:31 PM
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L92 is the '07 Escalade motor and is alum block/heads. The block is not yet available; however should be shortly.

Most people like to stick with 4" cranks, but plenty do run longer ones. A shorter throw typically allows you to rev it higher (safely).
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Old May 14, 2006 | 12:47 PM
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I have been reving my 4.125" stock bore to 7k for a long time. It made 470 rwtq. 2 years ago and the torque is from idle to 7k.

What would my 4.125 stroke crank make in the 6.2 litre block?
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Old May 14, 2006 | 12:57 PM
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Looks like a hair over 427
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