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Old 03-20-2012, 07:18 PM   #1

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Forged Internals Ls3

Im looking to Forge out my engine/bore it out to get it ready to handle my twin turbo setup. Any brand in particular youd recommend?
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Old 03-20-2012, 08:46 PM   #2
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Brand of what, internals, or twin assuming internals. I wouldnt necessarily bore it out but hone out the cylinders a bit to 4.07" and add a 4.00" stroker crank. Shoot for about 416 - 418 cubes. Callies Compstar crank and callies h-beam/I beam rods and Wiseco or Diamond forged pistons. Think about coating the pistons with ceramic tops for a little extra strength. This will be a start What boost are you looking at and what is your final HP goal?

ARP hardware and ACL coated bearing etc. etc. etc
HKE LSX427(Mast blk lbl 305 6bolt LS7heads, PatG231/246 blower cam, RWHP/TQ: 1281/1133 SNL Performance Custom Twin PT6766 BB turbos 4 to 25psi selectable on the Boost Leash controller, Squash dual 400LPH/ID2000s, ALKY 4 gal meth, Autometer AFR/Bst/oilpres/oiltemp/fuelpress gauges, Pedders Justice road crs pkg: All HD bushes, supercar 12kg coil overs, supercar ZL1 sways, camber plates all setup by JusticePete! :Gforce 9" 35spline S-Trac, 1500hp Outlaw axles, 3.5"alum DS, Monster Triple disc; 4xForgeline 19x10.5 4xBridgestone 305/30R19 RE-11, CTS-v calipers/rotors/Cobalt friction XR1/3 pads
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Old 03-21-2012, 02:41 PM   #3
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Don't bother boring it out, you need all the sleeve thickness you can get. Also don't bother with a stroker crank, you don't need that for a turbo car. Keep the stock crank unless you plan on putting down more than 7-800hp.

Put your money towards the pistons and rods (callies, diamond, wiseco, eagle, scat) all make good products and on other misc parts like head studs, fueling etc.
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Old 03-21-2012, 02:51 PM   #4
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For twin turbos, I'd sell that motor complete. Then send an engine builder like Nelson or Pro Line and pile of cash and your first born.

That's not going to be a DIY project. For massive TT power you want a pro engine builder that specializes in TT LS motors.

Just my opinion.
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