LS3 416 Stroker Build Cost?
Thread Starter
Racer
Joined: Nov 2014
Posts: 405
Likes: 34
From: Forest Hills, New York
LS3 416 Stroker Build Cost?
Trying to figure out what it would cost to build an LS3 416 stroker?
I do not have a stock LS3 so would start from scratch
LS3 Engine Block - $1800 https://www.briantooleyracing.com/ch...-12623967.html
Rotating assembly Crank,Rods,Pistons - $2200 https://www.briantooleyracing.com/bu...-assembly.html
Camshaft,Springs,Pushrods Kit $1000
Heads - $1300 http://www.ebay.com/itm/Two-2-GM-Per...lWcCw2&vxp=mtr
Going to keep updating the list. if i missed something please let me know.
I do not have a stock LS3 so would start from scratch
LS3 Engine Block - $1800 https://www.briantooleyracing.com/ch...-12623967.html
Rotating assembly Crank,Rods,Pistons - $2200 https://www.briantooleyracing.com/bu...-assembly.html
Camshaft,Springs,Pushrods Kit $1000
Heads - $1300 http://www.ebay.com/itm/Two-2-GM-Per...lWcCw2&vxp=mtr
Going to keep updating the list. if i missed something please let me know.
Last edited by RomanNYC; Jan 9, 2017 at 02:23 PM.
Safety Car
Joined: Mar 2016
Posts: 3,534
Likes: 432
From: Atlantic Beach FL.
Why not get a used LS3 since you will be rebuilding it any way. Then you would have heads, intake and all that good stuff. Unless you are planning going completely aftermarket which is more expensive.
What are your goals?
What are your goals?
Thread Starter
Racer
Joined: Nov 2014
Posts: 405
Likes: 34
From: Forest Hills, New York
i have an ls6 right now and i was about to put like 7-8k in mods to it but than i thought i might as well build a forged ls3
Last edited by RomanNYC; Jan 9, 2017 at 03:11 PM.
Safety Car
Joined: Mar 2016
Posts: 3,534
Likes: 432
From: Atlantic Beach FL.
If you build a 402 it would leave some room to bore the engine in case you need to in the future.
You need an intake and throttle body... You will need valve springs to match the lift of your cam. Bearings etc..
What puts me over budget on a engine is all of nickel and dime stuff like hardware and gaskets. ARP bolts for example.
You need an intake and throttle body... You will need valve springs to match the lift of your cam. Bearings etc..
What puts me over budget on a engine is all of nickel and dime stuff like hardware and gaskets. ARP bolts for example.
Thread Starter
Racer
Joined: Nov 2014
Posts: 405
Likes: 34
From: Forest Hills, New York
If you build a 402 it would leave some room to bore the engine in case you need to in the future.
You need an intake and throttle body... You will need valve springs to match the lift of your cam. Bearings etc..
What puts me over budget on a engine is all of nickel and dime stuff like hardware and gaskets. ARP bolts for example.
You need an intake and throttle body... You will need valve springs to match the lift of your cam. Bearings etc..
What puts me over budget on a engine is all of nickel and dime stuff like hardware and gaskets. ARP bolts for example.
will the transmission and differential need to be changed if i do go to and ls3? im not talking about 800hp stuff, more 550-600
Last edited by RomanNYC; Jan 9, 2017 at 04:30 PM.
Safety Car
Joined: Mar 2016
Posts: 3,534
Likes: 432
From: Atlantic Beach FL.
Beefing up the drive line is not cheep. RPM has some nice differentials built with C6z internals and other upgrades. If you are using really sticky drag tires then the applied torque can be hard on drive-line parts. I'm not much into racing anymore. I'm okay with the LS6 for now if anything ever happens to it I will probably opt in for an LS3.
Maybe someone who really knows the drive-line weaknesses and has broken a few parts will chime in.
Maybe someone who really knows the drive-line weaknesses and has broken a few parts will chime in.
Instructor
Joined: Jun 2014
Posts: 172
Likes: 11
If you build a 402 it would leave some room to bore the engine in case you need to in the future.
You need an intake and throttle body... You will need valve springs to match the lift of your cam. Bearings etc..
What puts me over budget on a engine is all of nickel and dime stuff like hardware and gaskets. ARP bolts for example.
You need an intake and throttle body... You will need valve springs to match the lift of your cam. Bearings etc..
What puts me over budget on a engine is all of nickel and dime stuff like hardware and gaskets. ARP bolts for example.
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Melting Slicks
Joined: Jan 2014
Posts: 2,764
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From: Central Florida
You could get a forged stroked ls6 long block, ported heads, cam specd' how you want all put together from a reputable builder for about what you listed so far. What are your power goals? lots of built crazy horsepower ls6 out there without going to a ls3.
I got mine from SDPC for under 7k
I got mine from SDPC for under 7k
Thread Starter
Racer
Joined: Nov 2014
Posts: 405
Likes: 34
From: Forest Hills, New York
You could get a forged stroked ls6 long block, ported heads, cam specd' how you want all put together from a reputable builder for about what you listed so far. What are your power goals? lots of built crazy horsepower ls6 out there without going to a ls3.
I got mine from SDPC for under 7k
I got mine from SDPC for under 7k
Safety Car
Joined: Mar 2016
Posts: 3,534
Likes: 432
From: Atlantic Beach FL.
Increasing your HP 20-25% would definitely be noticeable but not so much that it is so hard to imagine. It's only 60 cubic inches and a little better intake and heads.
I could appreciate the better low to mid-range torque of the LS3 vs the LS6 on the street.
I could appreciate the better low to mid-range torque of the LS3 vs the LS6 on the street.
Thread Starter
Racer
Joined: Nov 2014
Posts: 405
Likes: 34
From: Forest Hills, New York
going from 370whp to 600 whp is a pretty big difference more than 25%
Safety Car
Joined: Mar 2016
Posts: 3,534
Likes: 432
From: Atlantic Beach FL.
I assumed you were at the limits of the LS6.
600HP naturally aspirated is pretty radical. Probably not the best street manners.
This why we asked what your goals are. Is most of your driving going to be done above 4500 RPM? I am assuming High compression.
You will need better fuel delivery.
600HP naturally aspirated is pretty radical. Probably not the best street manners.
This why we asked what your goals are. Is most of your driving going to be done above 4500 RPM? I am assuming High compression.
You will need better fuel delivery.
Race Director
Joined: Apr 2007
Posts: 18,049
Likes: 53
From: long Island NY
thats why im hesitating to put any money into an ls6, im affraid down the road i will want to increase the power but will need to spend big time
will the transmission and differential need to be changed if i do go to and ls3? im not talking about 800hp stuff, more 550-600
will the transmission and differential need to be changed if i do go to and ls3? im not talking about 800hp stuff, more 550-600
Your motor with headers, meth will hit those hp goals at 7psi with a safe tune it will last. As I told you last time I'm on my 04z stock motor, ECS installed Novi 2000 with AR headers, hi flows, X pipe, meth all stock cooling system at 6psi 581whp 515tq. 9 years, 20,000 miles always passes inspection and drives 100% stock and never runs hot. If and when motor goes will keep same 346 and just forge it and massage heads.
Racer
Joined: Mar 2015
Posts: 336
Likes: 40
From: Longview WA
At minimum:?
Crank Reluctor = 24x
CAM Wheel = 1x (Make sure you have the right one installed.)
--or make sure they are 58x and 4x and use LPE converter box.
Different injectors are used (ls3) (and use EV6>EV1 converters)
MAF / MAP / CAM sensor wires must be moved or get the adapter kits
Intake Manifold LS3
Throttle Body LS2 (silver blade) or 3bolt to 4bolt adapter
Get the rear oil galley plug from SCS vettes (i think thats them)
LS3 valley cover with orings to block oil towers
If you are building the block and it will be stroked, pick up a different windage tray unless you plan on hacking yours up to fit it.
Rear end is a different story - will cost as much as the engine or more.
RPM or RKT can help you with it
Crank Reluctor = 24x
CAM Wheel = 1x (Make sure you have the right one installed.)
--or make sure they are 58x and 4x and use LPE converter box.
Different injectors are used (ls3) (and use EV6>EV1 converters)
MAF / MAP / CAM sensor wires must be moved or get the adapter kits
Intake Manifold LS3
Throttle Body LS2 (silver blade) or 3bolt to 4bolt adapter
Get the rear oil galley plug from SCS vettes (i think thats them)
LS3 valley cover with orings to block oil towers
If you are building the block and it will be stroked, pick up a different windage tray unless you plan on hacking yours up to fit it.
Rear end is a different story - will cost as much as the engine or more.
RPM or RKT can help you with it
Last edited by derz_vette; Jan 9, 2017 at 11:52 PM.
Thread Starter
Racer
Joined: Nov 2014
Posts: 405
Likes: 34
From: Forest Hills, New York
If that is the only power you are looking for, stay with the centri.
Your motor with headers, meth will hit those hp goals at 7psi with a safe tune it will last. As I told you last time I'm on my 04z stock motor, ECS installed Novi 2000 with AR headers, hi flows, X pipe, meth all stock cooling system at 6psi 581whp 515tq. 9 years, 20,000 miles always passes inspection and drives 100% stock and never runs hot. If and when motor goes will keep same 346 and just forge it and massage heads.
Your motor with headers, meth will hit those hp goals at 7psi with a safe tune it will last. As I told you last time I'm on my 04z stock motor, ECS installed Novi 2000 with AR headers, hi flows, X pipe, meth all stock cooling system at 6psi 581whp 515tq. 9 years, 20,000 miles always passes inspection and drives 100% stock and never runs hot. If and when motor goes will keep same 346 and just forge it and massage heads.
Pro
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2021 C5 of the Year Finalist - Modified
Thread Starter
Racer
Joined: Nov 2014
Posts: 405
Likes: 34
From: Forest Hills, New York