Max boost stock ls3 ? - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

onebad1le · 03-29-2015, 11:39 AM

what the max boost u can run on a stock ls3 ? I have a 2013 1le with a zl1
blower and want to change pulleys , right now I have 9lbs of boost and want to go
higher on boost with a pulley change . Right now have plenty of fuel with 1000cc injectors
and all the extras to handle the power . I will run higher octane fuel if needed.
would like to run to two pulley combo --one for pump gas ( 9lbs) and one for race gas C16
maybe 15 lbs ?
How high can i go - until Boom lol

DarkCry956 · 03-29-2015, 03:25 PM

I think 13psi is reasonable. Many have gone above that and are above that but it's just a matter of time and luck if u ask me. I had all the bells and whistles at 15 and boom. Right parts and good tune is what most will say. Most just read it and don't live it though

NicKey · 03-29-2015, 04:03 PM

As a Performance Shop we have seen a lot and tested even more combinations. Our opinion for street driven, pump gas, stock block LS3 / L99 for longevity is 12lbs of Boost or less. A proper and safe tune is a given.

This in itself will not guarantee no issues down the road, but is where we have drawn the line in the sand. We know that there are those who are currently living with even more boost on pump gas.

Bo White · 03-29-2015, 04:50 PM

I've been at 12psi with 14* timing and 11.3 a/f for a long time. Currently 682rwhp.

2010_camaro · 03-29-2015, 04:56 PM

How much spray should one run on a stock LS3 with LSA blower on 10psi?

onebad1le · 03-29-2015, 07:55 PM

well, looks like I will go 12 lbs instead of 15lbs Will be ordering pulley soon
and since I'm at 9lbs now. The extra 3 lbs hopefully get to close to 650 rear wheel
When ever I get a built short block build, I will add nitrous (I already have it )
and push the limits of the stock block just to see how high it can go.

D3R3K · 03-29-2015, 10:25 PM

17psi here on stock ls3.

camarossdusk · 03-30-2015, 12:39 AM

was told to stay away from 15 psi, im at 13 psi with 14 degrees of timing, for almost a year now over 700 rwhp, I don't beat on my car, and has been mostly been a street car with no track passes yet. It helps to have a good tune, and water methanol or good fuel system.

williamp78 · 03-30-2015, 10:02 AM

Quote:

Originally Posted by D3R3K

17psi here on stock ls3.

AWESOME!!

1KillerSS · 03-30-2015, 03:18 PM

I have been told that its not about psi its more about hp, as long as you have the fuel, turn it up. The stock LS3 is good for some killer power, there are some at 900whp on stock bottom ends. I know you'll start pushing water past the 20's on stock engine, I dont know the exact number where you will start pushing water. Slowhawk or Mat from FSP can answer that question. I am sure there are a few others but those are the two that I know of, that have first hand experience with that.

NOTAV6 · 03-30-2015, 03:37 PM

14.5-15lbs here pump w/ meth though 798 wheel at sea level ... probably a little lower now that the car is at a little higher elevation

Unreal · 03-30-2015, 08:11 PM

Quote:

Originally Posted by 1KillerSS

I have been told that its not about psi its more about hp, as long as you have the fuel, turn it up. The stock LS3 is good for some killer power, there are some at 900whp on stock bottom ends. I know you'll start pushing water past the 20's on stock engine, I dont know the exact number where you will start pushing water. Slowhawk or Mat from FSP can answer that question. I am sure there are a few others but those are the two that I know of, that have first hand experience with that.

QFTT

Boost doesn't matter as much as HP/torque/Cylinder pressure.

800rwhp on 8psi with great heads and huge cam isn't magically safe while 650rwhp on 13-14psi with nothing else touched is unsafe. Boost is just measurement of restriction, so if you take restrictions out by doing things like heads/cam/exhaust you make more power at less boost, but as power goes up, cylinder pressure does and safety goes down.

Bone stock turbo car I have no issue at 15-16psi. That makes a solid 800rwhp. No blower to spin to take up power and only reason boost is typically that much is because you can easily turn it up and don't have to mess with heads/cams/headers/etc.

So don't worry about boost. For a beat on street car I would say ~600-650rwhp without added octane and 750-800rwhp with enough octane (meth, e85, etc) is where you want to stop.

2010SSRSM6 · 03-31-2015, 08:18 AM

I've been running 11#'s of boost for almost 50k miles. I'll be adding meth and E85 in a few weeks and bumping up to 13#'s of boost.

My buddy has been running 13#'s of boost in a similarly built car for about 15k miles and both of us beat the snot out of our cars and haven't had any issues.

If you are going to attempt to get above 11#'s of boost, get a dual pump fuel system, add meth and start a contingency fund. That is the only way I would go and feel comfortable with that much power beating on cast parts. Last thing you want to do is starve the motor of fuel when it is already working beyond its originally designed/tested parameters.

revived · 03-31-2015, 04:46 PM

Why do all the kits selling with tunes only run the minimum 6-8psi if it can handle 12 safely that's a big difference?

03-29-2015, 11:39 AM	#1
onebad1le Account Suspended Drives: 2013 1le Join Date: Nov 2012 Location: houston Posts: 459	Max boost stock ls3 ? what the max boost u can run on a stock ls3 ? I have a 2013 1le with a zl1 blower and want to change pulleys , right now I have 9lbs of boost and want to go higher on boost with a pulley change . Right now have plenty of fuel with 1000cc injectors and all the extras to handle the power . I will run higher octane fuel if needed. would like to run to two pulley combo --one for pump gas ( 9lbs) and one for race gas C16 maybe 15 lbs ? How high can i go - until Boom lol

03-29-2015, 04:50 PM	#4
Bo White Drives: 2015 Summit White 2SS 1LE Join Date: Feb 2012 Location: Vance Alabama Posts: 8,019	I've been at 12psi with 14* timing and 11.3 a/f for a long time. Currently 682rwhp. __________________ Retired wanna be cylinder head porter 2015 2SS 1LE Clutch reservoir, Vararam DRX, ported TB, TSP 2" headers, MGW shifter Totalled: 2010 1SS Wilkes Performance/Eagle 416 shortblock, TSP custom valvetrain, PRC 260 heads, Edelbrock Pro Flo 102, th400 swap, 8" PTC 5500 stall= 535/435 at the wheels tuned Gen 3 Performance and Dyno 10.97 @ 124 full weight in 3100 DA CamaroFest X

03-29-2015, 04:56 PM	#5
2010_camaro Drives: 2014 Camaro SS Join Date: May 2011 Location: Florence, KY Posts: 2,238 View My Garage	How much spray should one run on a stock LS3 with LSA blower on 10psi? __________________ MODS 6.0 forged iron block, TH400, B&M shifter, DSS axles & driveshaft, Viking / BMR suspension, Full custom fuel system with cell, Twin 76mm teriyaki tornados on 24lbs. https://www.instagram.com/whoopa_ss/

03-29-2015, 07:55 PM	#6
onebad1le Account Suspended Drives: 2013 1le Join Date: Nov 2012 Location: houston Posts: 459	12lbs of boost well, looks like I will go 12 lbs instead of 15lbs Will be ordering pulley soon and since I'm at 9lbs now. The extra 3 lbs hopefully get to close to 650 rear wheel When ever I get a built short block build, I will add nitrous (I already have it ) and push the limits of the stock block just to see how high it can go.

03-29-2015, 10:25 PM	#7
D3R3K Sittin side ways Drives: 2010 2SS/RS IOM Join Date: Nov 2012 Location: Arlington,Tx Posts: 232	17psi here on stock ls3. __________________ 850+hp club member Procharger F1-A

03-29-2015, 03:25 PM	#2
DarkCry956 Drives: 2011 Camaro 2SS/RS Join Date: Oct 2011 Location: Texas RGV Posts: 794	I think 13psi is reasonable. Many have gone above that and are above that but it's just a matter of time and luck if u ask me. I had all the bells and whistles at 15 and boom. Right parts and good tune is what most will say. Most just read it and don't live it though

03-29-2015, 04:03 PM	#3
NicKey Drives: Nickey Super Camaro Join Date: Nov 2008 Location: Loves Park, Illinois Posts: 1,668	As a Performance Shop we have seen a lot and tested even more combinations. Our opinion for street driven, pump gas, stock block LS3 / L99 for longevity is 12lbs of Boost or less. A proper and safe tune is a given. This in itself will not guarantee no issues down the road, but is where we have drawn the line in the sand. We know that there are those who are currently living with even more boost on pump gas.

03-30-2015, 12:39 AM	#8
camarossdusk whippled 5th gen Drives: 2013 camaro ss Join Date: Jun 2013 Location: West Texas Posts: 442 View My Garage	was told to stay away from 15 psi, im at 13 psi with 14 degrees of timing, for almost a year now over 700 rwhp, I don't beat on my car, and has been mostly been a street car with no track passes yet. It helps to have a good tune, and water methanol or good fuel system. __________________ Whipple running 13 lbs of boost, Innovators west 8 rib with 10 percent over drive crankshaft pulley. Fore level 2 Dual pump fuel system, with duel TI auto fuel pumps, ID 1300 fuel injectors, tuned on e85. Driveshaft shop aluminum driveshaft, 1400 hp half shafts, Detroit tru-trac. ls9 camshaft, CNC ported heads, with trunion and dual valve spring upgrade, LS9 head gaskets, ARP 2000 head studs, Manley stainless valves. Adjustable Bmr toe rods, trailing arms, rear adjustable sway bar, full cradle bushings, upper control arm bushings, BMR diff. bushings, bmr driveshaft safety loop.

03-30-2015, 03:18 PM	#10
1KillerSS Too much is never enough! Drives: AGP TT SS [COTW] 4/20/15 Join Date: Feb 2014 Location: Toledo,OH Posts: 4,149 View My Garage	I have been told that its not about psi its more about hp, as long as you have the fuel, turn it up. The stock LS3 is good for some killer power, there are some at 900whp on stock bottom ends. I know you'll start pushing water past the 20's on stock engine, I dont know the exact number where you will start pushing water. Slowhawk or Mat from FSP can answer that question. I am sure there are a few others but those are the two that I know of, that have first hand experience with that. __________________ AGP TT kit, 54/57 Forged rotating assembly, Custom grind cam... Dual nozzle meth, ID850's, Livernois dual fuel pumps, ECS BAP, 25% UDP, 3 inch Magnaflow catback with X pipe, Mantic 9000 clutch, DSS 1000hp axles, DSS aluminum driveshaft, ZL1 rear end, solid subframe bushings, HE differential offset bushings, BMR Trailing arm, BMR toe rods, Lingenfelter LNC-2000,SJM Line Lock. 747 whp 714wtq *Build thread* http://www.camaro5.com/forums/showth...55#post8107855

03-30-2015, 03:37 PM	#11
NOTAV6 Drives: 2010 ECS Camaro SS Join Date: Aug 2014 Location: Lubbock, TX Posts: 58	14.5-15lbs here pump w/ meth though 798 wheel at sea level ... probably a little lower now that the car is at a little higher elevation

03-31-2015, 08:18 AM	#13
2010SSRSM6 Drives: My wife crazy with my C5 usage. Join Date: Apr 2009 Location: DFW Posts: 6,558 View My Garage	I've been running 11#'s of boost for almost 50k miles. I'll be adding meth and E85 in a few weeks and bumping up to 13#'s of boost. My buddy has been running 13#'s of boost in a similarly built car for about 15k miles and both of us beat the snot out of our cars and haven't had any issues. If you are going to attempt to get above 11#'s of boost, get a dual pump fuel system, add meth and start a contingency fund. That is the only way I would go and feel comfortable with that much power beating on cast parts. Last thing you want to do is starve the motor of fuel when it is already working beyond its originally designed/tested parameters. __________________ UNDER CONSTRUCTION......again......

03-31-2015, 04:46 PM	#14
revived Vrrrm. Drives: 2011 2SS/RS LS3 Join Date: Jun 2013 Location: MA Posts: 1,495	Why do all the kits selling with tunes only run the minimum 6-8psi if it can handle 12 safely that's a big difference? __________________