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01-15-2018, 06:22 PM
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#1 |
 
Drives: 2012 Camaro ZL1 Join Date: Oct 2016
Location: St. Louis
Posts: 98
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LSA Crankshaft Limits
So I️ know the LSA crankshaft is shared with the B15 LSX Block and is a Forged crankshaft. But, has anyone ever broken an LSA crankshaft or know what it’s limits truly are? Any insight or opinions would be great. Thanks!
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01-15-2018, 07:35 PM
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#2 |
 
Drives: '11 2SS/RS LS3 M6 (Sold) Join Date: Dec 2015
Location: VA
Posts: 200
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I'd say if you are running an aluminum block that you will meet the block limits before the crank runs out. LSA crank should be good from 1000hp to 1200hp at the crank, and up to 1500hp if you wanna test your luck.
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2011 IOM 2SS/RS LS3 M6- Injen CAI, TSP 1 7/8” headers, PTB, Hurst short throw, Corsa catback exhaust, 20" TSW Nurburgrings, BMR lower control arms, BMR tunnel brace, Hotchkis lowering springs. 3660lbs. Tuned by me (sold)
2010 RJT 1SS/RS LS3 M6- CAI, TSP 2” headers, TSP F-35 cam, PTB, Hurst short throw, Dronemaster catback, BMR lowering springs, Kirkey seats, 20”/18” Weld Belmonts, 3550lbs. |
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01-15-2018, 07:41 PM
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#3 |
  
Drives: 2023 SS 1LE 10SPD/2015 SS 427 Man Join Date: Aug 2015
Location: Sacramento Area
Posts: 803
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Depending on the tune, 1200hp, it will go further but you will see deflection in the bearings as it starts to flex and bounce around.
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01-15-2018, 08:43 PM
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#4 | |
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Drives: 2012 Camaro ZL1 Join Date: Oct 2016
Location: St. Louis
Posts: 98
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Quote:
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*2012 Camaro ZL1 (1 of 69 preproduction) A6*
376CI Built Bottom End LSA (10.1:1) Ported LSA Heads, BTR STG 3 400+ CI Camshaft, F1X Procharger - Cogged, Holley Sniper High Rise Intake, 1 7/8” TSP Headers, 1700CC ID Injectors, Fore Innovations Triple 450lph, DSX Flexfuel Sensor. Making 1000+rwhp. Tuned by Tuning by Shane Hinds LLC. |
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01-15-2018, 08:44 PM
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#5 | |
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Drives: 2012 Camaro ZL1 Join Date: Oct 2016
Location: St. Louis
Posts: 98
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Quote:
__________________
*2012 Camaro ZL1 (1 of 69 preproduction) A6*
376CI Built Bottom End LSA (10.1:1) Ported LSA Heads, BTR STG 3 400+ CI Camshaft, F1X Procharger - Cogged, Holley Sniper High Rise Intake, 1 7/8” TSP Headers, 1700CC ID Injectors, Fore Innovations Triple 450lph, DSX Flexfuel Sensor. Making 1000+rwhp. Tuned by Tuning by Shane Hinds LLC. |
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01-16-2018, 12:44 PM
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#6 |
Drives: Fast Join Date: Mar 2015
Location: Michigan
Posts: 3,696
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Inside an original engine LSA, it's good for about 900-1000 crank. In a motor with upgrades; like it looks like you have, it should do 1000-1200 but I must say you'd be pushing the hell out of it and it will start to flex as noted above; I might recommend going to a Callies or something like that.
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01-16-2018, 01:07 PM
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#7 |
Drives: 2013 ZL1, 2016 Denali HD Join Date: Jun 2013
Location: Greensboro Ga.
Posts: 540
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I had 1000 rwhp for three years and my crankshaft held up great. It is/was the pistons that will be the week point......
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LSX 427, Twin Precision Turbo's, 64/66. Nitrous Outlet System. Pro EFI Engine Management Systems. Vengeance Racing Built......
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01-16-2018, 04:31 PM
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#8 | ||
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fo'shizZL1
Drives: 2017 ZL1 Join Date: Aug 2017
Location: ATL
Posts: 1,281
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Quote:
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2017 ZL1 M6 Black | Maggie 2650 // 103TB // Big Gulp
Past Rides- 2014 ZL1 M6 Red Hot | Tons of mods 2004 CTS-V M6 Silver | Many mods 1995 Corvette M6 Torch Red | A few more mods 1992 Camaro M5 White | A few mods |
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01-18-2018, 11:36 AM
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#9 | ||
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Drives: 2013 ZL1, 2016 Denali HD Join Date: Jun 2013
Location: Greensboro Ga.
Posts: 540
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Quote:
__________________
LSX 427, Twin Precision Turbo's, 64/66. Nitrous Outlet System. Pro EFI Engine Management Systems. Vengeance Racing Built......
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