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12-13-2014, 08:10 PM
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#1 |
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JT Synergy RS/2SS
Drives: 2011 Camaro RS/2SS (L99) Synergy Join Date: May 2013
Location: Hager City, WI
Posts: 697
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"Safe" boost levels for stock bottom end?
Hey guys,
I'm currently running 9.5 psi on my L99 Magnacharged Camaro. I plan to upgrade to E85 and pulley down next spring but I'd like to know how much boost a stock bottom end can take? I realize this is a loaded question and it depends on how hard I drive, but is 13 psi "dangerous" or can our cars live at this level? I drag race 5-6 times during the summer and I don't want to worry about racing it. Just trying to get a game plan. The E85 will give me plenty of octane and I'm already running ID850's so fuel shouldn't be an issue. Just trying to be smart. Thoughts. Thanks! |
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12-13-2014, 10:54 PM
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#2 |
           
Drives: 2015 Summit White 2SS 1LE Join Date: Feb 2012
Location: Vance Alabama
Posts: 8,018
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I've been at 12 for a while and will be changing to the next pulley soon to crank it to 15psi.
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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 |
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12-13-2014, 11:14 PM
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#3 |
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Eh, that'll happen
Drives: 2010 2SS Join Date: Apr 2012
Location: Mesa, Arizona
Posts: 1,841
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As long as your tune is spot on, you should be fine. Theres a car on here running 919whp on a stock short block. Youll never hit that on a maggie so throw everything you want at it!
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2010 Camaro SS LS3 - No Modz
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12-13-2014, 11:18 PM
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#4 |
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Drives: 2015 Summit White 2SS 1LE Join Date: Feb 2012
Location: Vance Alabama
Posts: 8,018
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Agreed. You mentioned injectors but what pump are you running?
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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 |
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12-13-2014, 11:24 PM
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#5 |
 Drives: Camaro Join Date: Aug 2014
Location: NEB
Posts: 242
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As on any ls3/l99 I always recommend valve springs, unless it's already cammed, as I have witnessed valve float as low as "8 psi".
Other than that they are fairly stout from the factory as long as tune etc. Is spot on. |
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12-14-2014, 01:24 AM
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#6 |
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whippled 5th gen
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agreed on spot on tune, been running 12-13 lbs on water methanol raced a few times at track already with water methanol injection no issues.
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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.
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12-14-2014, 03:40 AM
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#7 | |
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JT Synergy RS/2SS
Drives: 2011 Camaro RS/2SS (L99) Synergy Join Date: May 2013
Location: Hager City, WI
Posts: 697
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Quote:
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12-14-2014, 03:42 AM
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#8 |
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JT Synergy RS/2SS
Drives: 2011 Camaro RS/2SS (L99) Synergy Join Date: May 2013
Location: Hager City, WI
Posts: 697
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Thanks guys. I think I'm good with my tune. Jannetty has been great!
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12-14-2014, 06:07 AM
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#9 |
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Drives: 2015 Summit White 2SS 1LE Join Date: Feb 2012
Location: Vance Alabama
Posts: 8,018
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No meth here. All pump.
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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 |
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12-14-2014, 07:23 AM
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#10 |
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Drives: 2006 Z06 Join Date: Oct 2010
Location: Gilbert, AZ
Posts: 5,712
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Don't worry about boost, and more so about power. 12psi on a turbo, vs 12psi on a big centri, vs 12psi on a maggie is all different levels. Maggies have lower limits because of the hot IATs, and less efficiency compared to others.
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Nick
Corvette Z06 -1200ish rwhp |
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12-14-2014, 08:11 AM
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#11 | |
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JT Synergy RS/2SS
Drives: 2011 Camaro RS/2SS (L99) Synergy Join Date: May 2013
Location: Hager City, WI
Posts: 697
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Quote:
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12-14-2014, 08:41 AM
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#12 |
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Drives: 2006 Z06 Join Date: Oct 2010
Location: Gilbert, AZ
Posts: 5,712
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L99 6l80 car I wouldn't push it much past 650rwhp IMO. Tranny will start giving you issues anyways much higher than that.
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Nick
Corvette Z06 -1200ish rwhp |
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12-14-2014, 09:34 AM
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#13 |
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JT Synergy RS/2SS
Drives: 2011 Camaro RS/2SS (L99) Synergy Join Date: May 2013
Location: Hager City, WI
Posts: 697
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Ok, thanks again
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12-14-2014, 10:34 AM
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#14 |
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2010 transformer
Drives: 2010 ss camaro Join Date: Nov 2014
Location: Lee's summit mo
Posts: 591
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I am planning on a Procharger I worry about actual hp vs lbs of boost
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