07-16-2011, 11:25 PM | #1 |
Supercharging advice
What's up everyone, so I am going with a centrifigal supercharger set up, I keep hearing the weak point in an ls3 is the valves, what is the max psi or max hp an ls3 can run safely? I hear 12 psi and under all the time, I also hear no more then 650 hp and psi doesn't matter... I already have full bolt ons
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07-17-2011, 12:12 AM | #2 |
Drives: 2011 imperial blue SS, black 92 RS Join Date: Apr 2011
Location: Denham Springs
Posts: 2,580
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Weak part is the connecting rods and high compression with weak pistons.
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2011 imperial blue SS/RS a6 12.43@112 vararam, tune, jba cats, magnaflow axle back, self ported tb, under drive pulley, NO headers, Stock tires. 1.87 60ft. Stock tires. SOLD :(
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07-17-2011, 12:29 AM | #3 |
Camaro SS Lover
Drives: 2010 Camaro 2SS/RS Black IOM Join Date: Jun 2010
Location: Toronto, Ontario (Canada)
Posts: 2,863
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I have a ProCharger installed and although the engine IAT's and all were good, engine still cracked up inside this past week. Only, took 1 1/2 months. We used all brand new top of the line accessories in the heads. Medium size custom grind 3 pin. blower CAM and still kaboom.
Word of advice; Save yourself some serious stress and stay stock or forge the engine first, then get a supercharger or figure out a way to go no more than 5psi. of boost (seems pretty useless to go that low though). I ran 7.5psi. at 6400rpm. which is very modest (rarely hit more than 4500rpm.), and as you know centris provide boost based on RPM's. Upon inspetion so far a bent valve, now need to tear down the entire engine to figure out what went wrong. Not good at all. Everyone believed this LS3 engine could handle <10psi. yet lot's of stories of cracked up engines. The only guys that don't have busted engines are the ones that bored them to 416ci. or 427ci. and forged the internals. I thought I could have things done well below the 10psi. and wait until next spring to have engine stroked and forged.
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2010 Camaro SS, P1SC SuperCharged Livernois LSX429ci., 1 7/8" LT Headers, full 3" MBRP exhaust, SPI built/tuned, a total
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07-17-2011, 02:48 AM | #4 | |
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Location: ST Helens, OR
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compression, iat's, pump gas and lean conditions ... you should do reserch on all that a meth kit will help |
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07-18-2011, 01:29 AM | #5 | |
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__________________ Originally Posted by FbodFather My sister's dentist's brother's cousin's housekeeper's dog-breeder's nephew sells coffee filters to the company that provides coffee to General Motors...... ........and HE WOULD KNOW!!!!__________________ Camaro Fest sub-forum |
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07-18-2011, 06:27 AM | #6 | |
Drives: 2010 SS & 2008 C6 Join Date: Mar 2008
Location: VA
Posts: 1,819
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If this was on the stock rotating assembly, you were pushing some serious horsepower through it. I`m not suprised something let go at that power level. Sorry it happened to you, definetly sucks. To the OP stay around 550rwhp and you should be fine on the stock motor, but boost is a finicky animal, some stay together for a long time, others die early.
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2010 SS L99, 536rwhp 10.843@126.72. Whipple Supercharger stock pulley, ARH 1 7/8 longtubes w/ catted xpipe, magnaflow 3" mufflers, ADM Race CAI, 3:70 gears, lightweight wheels and nitto drag radials. Stock internal L99, stock converter.
Bolt on best before blower 12.22@113.29 w/ nothing but ARH headers, catted x-pipe, ADM CAI and a tune on stock Pzero`s! Other car 2008 C6 Ls3, z51, A6, Npp Exhaust, best bonestock pass 11.80@118.82, Number 2 on the Corvette Forums Bonestock fastest list.. Last edited by GMRULZ; 07-18-2011 at 06:42 AM. |
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07-18-2011, 06:40 AM | #7 | |
Drives: 2SS/RS CGM CAMARO BEAST Join Date: Jul 2009
Location: carrollton, ga
Posts: 425
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2010 CGM 2SS/RS; 418 stroker; JE Forged Pistons (offset wrist pin); Forged Crank; upgraded valvetrain; Custom Comp Cams Cam; Kenne Bell 2.8; ID 1000s; Aeromotive Fuel pump with return; ARH Long Tubes; Spec heavy duty clutch; 3" Magnaflow Cat Back; Nick Williams 102 mm Throttle Body; Tune fixed by Dave Steck; 815 HP and 14 mpg
Upcoming-- Disintegrated drivetrain; Divorce if/when my wife catches on to my addiction |
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07-18-2011, 08:48 AM | #8 | |
Drives: BLUE CAMARO ZL1 1LE M6 Join Date: Jun 2009
Location: ON THE DYNO WATERBURY CT.
Posts: 15,271
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We currently have an LS3 Stock Long block that puts down 800 RWHP on 100 octane unleaded race fuel, owned by Bigdog. Vortech YSI supercharger Vortech optional Cog drive JRE Rough Idle blower cam 2 inch long tube headers Magnaflow 3 inch exhaust. 1000 cc Injector Dynamics injectors ADM dual fuel pump system JRE custom Tuning. Centrifugal superchargers are Easier on Parts as the boost is Linear with Engine RPM. We have Hundreds of supercharged cars running around with 6-10 PSI for years and years drag racing and daily street driving. Give me a call and I will Hook you up, I have a Polished V3 Vortech system in stock. GQ4life has about 40,000 miles on his and He is NOT easy on it by any means Ted.
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Celebrating 37 years Performance parts, Installation, Fabrication, Dyno tuning, Remote custom tuning, and alignments. 203-753-7223 Waterbury CT. 06705 email tedj@jannettyracing.com |
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07-18-2011, 09:29 AM | #9 | |
Drives: 2010 Summit White Camaro SS/RS Join Date: Dec 2010
Location: Toledo Ohio
Posts: 388
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07-18-2011, 09:34 AM | #10 |
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Yeah boosting is scaring me away from it. I may just go longtube headers and LS3 conversion with 3 bolt CAM and call it a day.
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07-18-2011, 10:34 AM | #11 |
Drives: BLUE CAMARO ZL1 1LE M6 Join Date: Jun 2009
Location: ON THE DYNO WATERBURY CT.
Posts: 15,271
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Don't Be Scared, when done Properly it is as Reliable as any other factory car on the road.
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Celebrating 37 years Performance parts, Installation, Fabrication, Dyno tuning, Remote custom tuning, and alignments. 203-753-7223 Waterbury CT. 06705 email tedj@jannettyracing.com |
07-18-2011, 10:45 AM | #12 |
Drives: 2010 IOM 2ss/RS Join Date: Sep 2009
Location: SoCal, I.E.
Posts: 1,545
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when you say "properly", does that include being forged? or are you saying this based on a stock bottom end? i also am looking forward to a modest amout of boost at some point, so i am reading more and more about it. thanks.
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07-18-2011, 11:25 AM | #13 | |
Drives: BLUE CAMARO ZL1 1LE M6 Join Date: Jun 2009
Location: ON THE DYNO WATERBURY CT.
Posts: 15,271
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Modest boost is 6-8 PSI which could net you 500-550 RWHP Easy and Reliably. We built hundreds of Stock Bottom end Supercharger packages over the last 20 years. Ted.
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www.jannettyracing.com
Celebrating 37 years Performance parts, Installation, Fabrication, Dyno tuning, Remote custom tuning, and alignments. 203-753-7223 Waterbury CT. 06705 email tedj@jannettyracing.com |
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07-18-2011, 12:50 PM | #14 |
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i ts picking a good combination and having realistic goals.... Then having Confidence in your tuner and his goal..... Some are in it for sheer Horsepower numbers others have your cars health in mind....and a few rare ones balance both... At the end of the day ....stick to what you said .... dont add anything else and Trust your tuner....You start tweaking without him ......and your begging for it..... This winter Ill be taking the next step and forging and Once again going to my tuner for his magic touch
Brian |
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