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06-10-2010, 03:40 PM
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#1 |
 Drives: c Join Date: Feb 2010
Location: c
Posts: 627
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What is MAX RWHP before needing to build the bottom end of the engine?
After adding super chargers, full exhaust... how high can I go before I need to consider getting forged internals?
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06-10-2010, 03:45 PM
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#2 |
 Drives: Z06, 69 Camaro Join Date: Oct 2009
Location: Orange County
Posts: 197
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A better question might be how many variables effect (your question).
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06-10-2010, 03:46 PM
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#3 |
       
Drives: Silver 2010 SS Camaro Join Date: Jul 2009
Location: TN
Posts: 2,562
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Well I haven't heard any specific numbers but in my opinion 650 rwhp is getting close.
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ADM built 417, 2.9L Whipple with 3.250 pulley, ADM ported and polished LSA heads,ADM stage3 cam,ADM LSA belt drive system,ADM CAI race scoop, ADM dual fuel pumps, ID 850's, BMR full suspension, Gforce 9 inch kit with 3.5 inch driveshaft, Street Slayer twin carbon clutch, Lingenfelter oil seperator. Tuned by built by ADM Performance, 763rwhp,705rwtq |
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06-10-2010, 03:46 PM
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#4 |
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Drives: c Join Date: Feb 2010
Location: c
Posts: 627
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Ok, well. at point of upgrades should I consider getting forged internals?
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06-10-2010, 03:54 PM
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#5 | |
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Drives: Z06, 69 Camaro Join Date: Oct 2009
Location: Orange County
Posts: 197
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600whp seems to be the limit for any longevity on stock pistons. A bad tune or fuel limit your odds of survival. If you want to play over 550whp you should have a foged short in the back of your mind.
Quote:
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06-10-2010, 04:28 PM
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#6 |
Drives: everyone crazy... Join Date: May 2009
Location: SW Florida
Posts: 2,109
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I've seen stock LS3 running close to 700RWHP with good tune and seen stock LS3 with 423 RWHP blownup with bad tune.
I'd say, stay below 550 RWHP and TQ! |
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06-10-2010, 04:50 PM
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#7 |
 
Drives: 2010 Camaro SS/RS Join Date: Sep 2009
Location: The Woodlands, TX
Posts: 332
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I have 760 hp at the crank and have stock internals. To me it depends on how much you intend to drive it and how hard. One school of thought is to go stock internals and if it comes apart then wait at that time to rebuild with forged. That is my vote.
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Yellow SS/RS
LMR Twisted Slayer 650 RWHP, ARH Headers, Hi-flow cats, Carbon/Organic Twin Disc/Pfadt/BMR/Hurst Shifter/D2forged VS1's |
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06-10-2010, 04:54 PM
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#8 |
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Blessed
Drives: 2013 Sonic RS MT Join Date: Dec 2007
Location: Saint Augustine FL
Posts: 28,444
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I would look more at AFR...
anything over 12 is pushing the limits of the stock bottom end... 12.5 and up should have at least rods and pistons, and a fuel pump booster. FWIW, it does seem that a 12 AFR is right about where you get to 600+ RWHP with the mods mentioned in the OP. 
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06-10-2010, 05:03 PM
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#9 |
  Drives: 2010 Join Date: Jul 2009
Location: NH
Posts: 4,788
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you aren't going to hit 800 RWHP without quality parts... and have it stay together.
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06-10-2010, 05:40 PM
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#10 | |
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Drives: Maggie blown LS3 vette Join Date: Aug 2009
Location: SE TX
Posts: 1,490
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Quote:
 ). If you aren't hell bent on destruction, and have a slight clue about machinery, I think 650rwhp is doable with a spot on tune. 650 will be a little tough on the rest of the drivetrain though  .
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06-10-2010, 05:47 PM
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#11 |
Drives: 2013 A6 GT 5.0 Join Date: Nov 2009
Location: Edmond, OK
Posts: 2,909
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Its all in the tune and type of power adder as stock shortblock LS motors have lived at 800RWHP. Without knowing anything about the setup or useage I would say below 550RWHP is moderatly safe.
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BLK/BLK 1SS/RS Ordered 11-01-2009 Took delivery 12-22-2009. Heads/cam/converter/bolt ons. SOLD Feb 2015 to fund 6th gen LT1 SS with 8L90E.
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06-10-2010, 10:34 PM
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#12 |
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812.3whp then boom..
alot of people at 600wHP and r just fine.. couple at 730 to 770wHP and r fine but Id say safety zone between 650 and 700wHP to have engine last awhile
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06-10-2010, 11:02 PM
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#13 | |
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Drives: 2013 A6 GT 5.0 Join Date: Nov 2009
Location: Edmond, OK
Posts: 2,909
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Quote:
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BLK/BLK 1SS/RS Ordered 11-01-2009 Took delivery 12-22-2009. Heads/cam/converter/bolt ons. SOLD Feb 2015 to fund 6th gen LT1 SS with 8L90E.
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06-10-2010, 11:26 PM
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#14 |
Drives: 2010 Camaro SS Join Date: May 2010
Location: Phila,Pa.
Posts: 557
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Cant speak for LS3, But we have a few FI LS6 Z06's making 700RW
I have a few LS2's at 575 to 680 RW None of them broke YET but imo 600RW is pushing it...
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