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Old 12-08-2010, 05:52 AM   #1
papabearcamaro

 
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Ballpark $ figure to bulletproof bottom end on LS3

Will soon be installing a Maggie and ported heads on my car.
Question is,what is a rough estimate to have the bottom end on my LS3 reworked to accept a higher boost from the Maggie?
I realize there are alot of variables with this question so that is why I am wondering about a ballpark figure. I would have the shop do the motor,heads,and Maggie install all at the same time.
If it is something that sounds near my budget I will persue my question with the shop that I use.
Thanks everyone!
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SOLD(Traded for 2012 Silverado Z71 4x4 and 2012 Sonic Hatch.)...2010 Camaro 1SS/RS/LS3,yellow with House of Kolor Tangerine Pearl rally stripes,manual trans.Hurst short throw shifter,4 pack rally gauges,Roto-Fab air intake,Kooks long tube headers with high-flow cats,Borla S-Type catback exhaust,Comp Cam,PRC ported heads,Maggie with 3.6 pulley and 1:1 cog drive,secondary fuel system with 65lb injectors,ADM digital A/F and Boost gauge,Pfadt trailing arms and subframe bushings.614.25rwhp/566.82rwtq on 8# of boost.

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Old 12-08-2010, 12:00 PM   #2
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Why not ask the shop first? That's what I do. 99% of the people here don't have a built bottom end and would probably just be repeating what they heard from someone else. If you trust your guy and he's done this kind of job before, then he should be straightforward with you...
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Old 12-08-2010, 03:43 PM   #3
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4k or so.
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Old 12-08-2010, 05:19 PM   #4
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People are running well over 700HP on the stock bottom end. Unless your Maggie is gonna be above that, you should have no worries, as long as it's tuned and set up right.

As for cost to redo bottom end to be stronger, your looking at about what the SC costs. For just the normal 550-650HP Maggie, I wouldn't bother. Now if you were running a ton of boost from a YSI or something, then you may have a reason to beef up.
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Old 12-08-2010, 05:25 PM   #5
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The LS series stock bottom end will handle over 1000 hp. It's the rods, pistons, rings, and rod bolts that are the weak links. If you're looking to do that, you might as well stroke it. It'll be about $3800 + installation. To me, that's cheap insurance and it allows you to really turn up the boost and break more drivetrain parts....it never stops my friend.
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Old 12-08-2010, 07:20 PM   #6
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cheaper to sell your ls3 and start over with a 427 LSX short block now!! $5650
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Old 12-09-2010, 08:27 AM   #7
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Lol @ "the ls series shortblock can handle 1000 rwhp stock, except for the *insert almost every component for the shortblack here*"
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Old 12-09-2010, 08:34 AM   #8
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Lol @ "the ls series shortblock can handle 1000 rwhp stock, except for the *insert almost every component for the shortblack here*"
Yup....The foundation is strong (and to a degree so is the stock rotating assembly), but once you start to crank the boost past 8psi, you'll be using the stock pistons and rods as paperweights.
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Old 12-09-2010, 08:53 AM   #9
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Quote:
Originally Posted by Prochargedchevyi View Post
Yup....The foundation is strong (and to a degree so is the stock rotating assembly), but once you start to crank the boost past 8psi, you'll be using the stock pistons and rods as paperweights.
Lol wtf are you talking about? Foundation? We are building a motor here, not a house. Lol

Are we copying all of this from a magazine?
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Old 12-09-2010, 09:00 AM   #10
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Old 12-09-2010, 05:41 PM   #11
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Quote:
Originally Posted by Prochargedchevyi View Post
Yup....The foundation is strong (and to a degree so is the stock rotating assembly), but once you start to crank the boost past 8psi, you'll be using the stock pistons and rods as paperweights.
Really? There are quite a few, including me, that have been running well over 8 psi for some time now with no problems.
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Old 12-09-2010, 06:20 PM   #12
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Really? There are quite a few, including me, that have been running well over 8 psi for some time now with no problems.

I was at 12.5 psi for about a month. I now have a forged setup. You can figure what happened.


And I have a nice souvenir to show for that much boost on a stock bottom. Over a year at 10 psi, a month at 12.5.
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Old 12-09-2010, 07:13 PM   #13
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Quote:
Originally Posted by mikepage0007 View Post
cheaper to sell your ls3 and start over with a 427 LSX short block now!! $5650

what can you convert from the ls3 to work with the 427? i am talking about things like headers, Maggie supercharger, the computer and etc?
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Old 12-10-2010, 03:30 AM   #14
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Quote:
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what can you convert from the ls3 to work with the 427? i am talking about things like headers, Maggie supercharger, the computer and etc?
Good question. Cost of the short block is'nt so bad,what probably hurts is the labor and parts that are not interchangeable from motor to motor.
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SOLD(Traded for 2012 Silverado Z71 4x4 and 2012 Sonic Hatch.)...2010 Camaro 1SS/RS/LS3,yellow with House of Kolor Tangerine Pearl rally stripes,manual trans.Hurst short throw shifter,4 pack rally gauges,Roto-Fab air intake,Kooks long tube headers with high-flow cats,Borla S-Type catback exhaust,Comp Cam,PRC ported heads,Maggie with 3.6 pulley and 1:1 cog drive,secondary fuel system with 65lb injectors,ADM digital A/F and Boost gauge,Pfadt trailing arms and subframe bushings.614.25rwhp/566.82rwtq on 8# of boost.

2012 Chevrolet Silverado 1500 EX.Cab 4X4 Z71.
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