LS3 What is anyone thinking for stroking

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May 11, 2007 | 02:46 PM

johnrigby

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8th Gear

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LS3 What is anyone thinking for stroking

Now that the LS3 is fact on the 2008 with a 6.2L displacement, what is the thought process that any has pondered about stroking it. I believe with the bore size of ~4.065 with a 4.1 stroke it is equal to a 7.0 L motor. Is there a physical limitation on the stoke length on this new motor.

OBTW Does anyone know if the Z06 7.0 can be stroked too.

May 11, 2007 | 03:50 PM

andreas g.

Drifting

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From: laguna niguel ca

First kid on the block with one

I've got a stroked LS3 ( L92 ) 4.065 boreX 4.1 stroke = 427 ci. It's in my 05 C6 6sp Z51. It also has CNC ported L92 heads Flowing 360 cfm in/270 cfm ex. Better than stock ls7 heads. The cam is a mild street cam,232/234/595/598/112LSA's with a speed density tune, it ildes great.It's a daily driver,it had to. This is a road car not a drag car. Even with a mild cam it dynoed 525rwhp/500rwtq. All the internals are forged. egale crank, scat rods, diamond pistons. The heads have ARP studs. It's a stout bottom end. It should live a long life. As time goes by the LS2 stroker will fade and these L92's will be the standard. Also I wouldn't be surprised if the standard motor for the C7 2010 is the LS7 505 hp, and the 700hp supercharged motor being in the high end car as the Z06 is today. Anyway love the motor, great power, very happy with it.

andreas g

Last edited by andreas g.; May 11, 2007 at 03:55 PM.

May 11, 2007 | 04:58 PM

johnrigby

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8th Gear

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So my idea isn't based on fantasy

Sounds like a great combo you got for the street, I may have to clone it some day

Thanks

May 13, 2007 | 03:52 AM

TTRotary

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From: Florida

Umm, they're already out there, readily available. 418 ci strokers, look it up. $4,700 or so for a bare block. Remember, this engine has been available in trucks / Escalade for a year now.

May 13, 2007 | 08:59 AM

valdeztke

Le Mans Master

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From: Alexandria VA

Quote:

Originally Posted by TTRotary

Umm, they're already out there, readily available. 418 ci strokers, look it up. $4,700 or so for a bare block. Remember, this engine has been available in trucks / Escalade for a year now.

Its the LSX block right?

May 13, 2007 | 01:47 PM

aTX427

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I think it is just called the L92 block. The LSX is the new iron GMPP block that supports up to 481ci.

May 15, 2007 | 01:17 PM

johnrigby

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Second part of question not answered

So can the 7.0L be stroked?
or is it at it's physical limitations now

May 15, 2007 | 05:33 PM

andreas g.

Drifting

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From: laguna niguel ca

yes the LS7 can be stroked. 4.1 would be the max. SDPC has them. Short block is $6,289. 440 inches. Anymore than 4.1 inches and the piston would be comming out of the bottom of the cylinder to far. You would need a taller deck for more stroke.