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stock crank, can it really hold its own

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Old 07-12-2006, 12:22 PM
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Default stock crank, can it really hold its own

I been looking to build a turbo motor for some time and now i have the money to start it. after reading on here many members running stock cranks with some killer number hittin 1000+ would i really be ok to run a stock crank n a iron block turbo motor trying to run some low 9's hi 8's? as i talked to finish line performance they say they don NOT recommend me run a stock crank. If i can save money by running a stock crank then i would like to but i dont wanna cut my self short and blow a motor up because of a stock crank. I guess my question is what is the chances of a stock crank failure in a hi hp turbo motor. or is it just a peace of mind having a good crank?
Old 07-12-2006, 03:38 PM
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from what ive seen, i wouldnt trust the stock crank ast 700rwhp
Old 07-13-2006, 01:55 AM
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Originally Posted by Hennytime
from what ive seen, i wouldnt trust the stock crank ast 700rwhp
And what exactly have you seen? I haven't heard of anyone with a properly assembled LS1/6 breaking a stock crank. That includes combos that have gone low 8's.
Old 07-13-2006, 01:59 AM
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Actually I dont think anyone has found the limit of the stock crank. Its strong, very strong.
Old 07-13-2006, 04:55 AM
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i just feel i can use the 800 dollars somewhere else if the stock crank is good its not like im tryin to run low 8s
Old 07-13-2006, 06:15 AM
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Which is were the stock crank has been proven to.
Old 07-13-2006, 07:47 AM
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lots of folks using the stock crank in 1000ish rwhp setups, no reason not to use it, I would if I was building a 370 or 364 FI engine. I have never heard of one breaking, does not mean it hasn't happened, but the stock crank has proven itself time and again. go for it.
Old 07-13-2006, 08:28 AM
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Originally Posted by Hennytime
from what ive seen, i wouldnt trust the stock crank ast 700rwhp
Just curious as to what youve seen?

Any disbelievers should go ask harlan about the stock crank. I think he took a stocker into the 8's @ 170+, with 1500+ hp.
Old 07-13-2006, 10:00 AM
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I think the stock crank would give or bust due too some sort of other failure like busting a rod or loosing a piston, pistons hitting the valves, Your playing with 800-1500 hp there isnt too much reliability, the only insurance is too buy the supporting compenents. I havent read or heard of a stock crank breaking either. but that doesnt mean it cant happen
Old 07-13-2006, 10:18 AM
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We've used stock cranks to 800rwhp/ blower cars (probly 1khp crank)without issue's.
Old 07-13-2006, 11:21 AM
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You can nitrate it for starters and better yet you can cryo it (only after mock up install is ballanced and blueprinted).
Old 07-13-2006, 12:05 PM
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see quote at bottom of sig.
Old 07-13-2006, 12:19 PM
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Originally Posted by 777
see quote at bottom of sig.




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