Stroked LS3 ? Who has one ?

[CC Performance]

We're doing an LS3 416 for boost for someone in Forida right as a matter of fact.. I'll pm you some info

[Dreamer2430]

Hey CC, is it possible to stroke the motor to 416 (for FI build later) and leave the rest of the car completely stock? Will my stock drivetrain (transmission, clutch, flywheel, diff) be ok with the power increase? Will I need to upgrade the fuel system? 'm not in the market immediately, but probably some time in the next year-ish, depending on the amount of $$ I'll need to have at once.

I asked this yesterday the thread that has all the pricing and details for your 416 and 427 builds, but it seems like that thread does get as much attention. So, sorry to post the same question twice.

[CC Performance]

Sorry must have missed it in the other thread....
yes and no..
Yes we can just stroke the bottom end and leave the top alone, the rest of the car will react as to how it is driven. If you dont do anything to the heads we're not picking up a whole lot of hp to begin with so the power wont be that detrimental. Its traction that hurts ... the fuel system will depend on how much power you want to make.
SO yes for the most part is the answer to your questions but driving habits will determine if you break something. The clutch should be fine for a while I would think but it comes down to how much you slip it when you start from a stop and how hi the revs are when you dump it.. same for the rear.. manual trans shoud be fine as well

[XclusivEric]

Originally Posted by CC Performance

True that but that Lunati crank wouldnt be my choice... CCW ( center counter weight) Callies is what we use in our big dollar big HP builds.. bout a $3800 crank but you get what your paying for.

Which Callies Crank is that? The Magnum, Magnum XL or Ultra Billet?

[newmoon]

Intersting thread for sure and it seems like a stroked forged LS3 might be the better way to go but I have a few questions. First is what are the typical costs above and beyond the stroker kit, obviously you have to remove motor, dis-assemble, ship(?), install, and tune. My next question is how strong is the block itself? Also you would have to decide right now if you plan to supercharge this stroker kit in the future correct?

I think after all is said and done the reality costs of this transformation is probably equal to the costs of a supercharger and install. The supercharger would more than likely have better normal driving manners, but the stroked engine much more durability. Either way to great choices I will have to make in the near future

[K1SSRSS]

I have an LS7 shortblock sitting in my garage, do you know how big you can go on one of these or is it basically just a factory stroked LS3.

[Matster]

My builder is putting the final touches on a Supercharged forged 416 stroker among other things,http://www.camaro5.com/forums/showthread.php?t=140568 There have been a number of things added to the list since we started this build as well as a number of delays waiting on parts. The expectation is over 700rwhp when they get the final tune dialed in for the street.

[mrh923]

So if I put a cam in my LS3 (which is my next move), and I decide to stroke to 416 later on, it won't be a problem will it? I will only be swapping the crank and rods/pistons correct?

[CC Performance]

Originally Posted by XclusivEric

Which Callies Crank is that? The Magnum, Magnum XL or Ultra Billet?

ultra billet... HKE/Erik Koenig actually got Callies to make/produce the crank and now its very popular with hi hp engines. We are in the front of the class when it comes to making power with these engines.

[CC Performance]

Originally Posted by newmoon

Intersting thread for sure and it seems like a stroked forged LS3 might be the better way to go but I have a few questions. First is what are the typical costs above and beyond the stroker kit, obviously you have to remove motor, dis-assemble, ship(?), install, and tune. My next question is how strong is the block itself? Also you would have to decide right now if you plan to supercharge this stroker kit in the future correct?

I think after all is said and done the reality costs of this transformation is probably equal to the costs of a supercharger and install. The supercharger would more than likely have better normal driving manners, but the stroked engine much more durability. Either way to great choices I will have to make in the near future

Its really debatable... The s/c done correctly on an OEM engine needs a meth kit to be safer... about 650 right there so you looking at 7550 if you do the installation yourself ... The stroker is 3875, headwork is 1200 and he cam is 425.... thats 5500.... that leaves you enough money to upgrade things like the oil pump... 165, timing set...100, lifters 540.....$6305.... injectors and fuel pump maybe..... $6905'ish....
I put it about the same maybe a little less but you then need a tune ... $450... so your at about 7355... but way more dependable... rough breakdown but it is close

[CC Performance]

Originally Posted by K1SSRSS

I have an LS7 shortblock sitting in my garage, do you know how big you can go on one of these or is it basically just a factory stroked LS3.

LS7 = bigger cubic inches than the factory LS3..

Its a 427 cid... 4.125 bore by 4" stroke
The LS3 is a 376 cid .... 4.065 bore by 3.622 stroke


We build a 457 from the LS7 same as we can build a 457 from the LS3 but coming from the factory the LS7 is bigger.

[CC Performance]

Originally Posted by mrh923

So if I put a cam in my LS3 (which is my next move), and I decide to stroke to 416 later on, it won't be a problem will it? I will only be swapping the crank and rods/pistons correct?

No the cam is just the cam, you can forge later with no issues... Just keep in mind that you need a cam speced for FI

[mrh923]

Originally Posted by CC Performance

No the cam is just the cam, you can forge later with no issues... Just keep in mind that you need a cam speced for FI

Would the TSP 231/236 cam kit be a good choice?