ral66352

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

JoeNova

Stock cranks start to flex somewhere around 1200-1400.

Aaron at SDPC

Factory crank will work fine for your goals of 600HP.

lmt0705

iTrader: (7)

Factory is fine for 600, if it's apart though definitely put good rods and pistons in it.

Black89Z51

iTrader: (2)

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.

oscs

iTrader: (19)

Ls1tech wrapped up in one post

ral66352

Thank you guys I'm gonna stick with the factory crank with a set oh h beam rods.