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Old Mar 9, 2017 | 12:41 PM
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Default Crankshaft help

Hi I'm from central Florida and new to the forum. So I've heard different stories from guys on crankshafts. I'm sure this has probably been brought up before and if so please direct me to that thread. So I have a 5.3 out of a 04 1500 that I'm putting in a s10 with a turbo. I've been told that a factory crank will hold every bit of what I'm looking for up to 12lbs under 600hp . Then I have guys telling me go with a forge bottom end because the factory won't hold. I'll have flat top pistons and h beam rods in the rotating assembly 317 heads Texas speed cam and valve train. I basically curious what the best way to go with my motor, it's just going to be used at on the street and track. Thank you
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Old Mar 9, 2017 | 12:46 PM
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Stock cranks start to flex somewhere around 1200-1400.
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Old Mar 9, 2017 | 12:52 PM
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Factory crank will work fine for your goals of 600HP.
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Old Mar 9, 2017 | 02:16 PM
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Factory is fine for 600, if it's apart though definitely put good rods and pistons in it.
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Old Mar 10, 2017 | 03:49 PM
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There's guys pushing 1000 hp at the wheels with unlocked converters with stock pistons, rods, and crank with 250,000 miles on the motor - including the main and rod bearings.

Don't start spewing money everywhere for no reason for 600 hp. Stock everything except a cam and valve springs and you'll be exactly where you are VERY safely.
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Old Mar 10, 2017 | 05:33 PM
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Originally Posted by Black89Z51
There's guys pushing 1000 hp at the wheels with unlocked converters with stock pistons, rods, and crank with 250,000 miles on the motor - including the main and rod bearings.

Don't start spewing money everywhere for no reason for 600 hp. Stock everything except a cam and valve springs and you'll be exactly where you are VERY safely.
Ls1tech wrapped up in one post
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Old Mar 19, 2017 | 07:07 AM
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Thank you guys I'm gonna stick with the factory crank with a set oh h beam rods.
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