Stock crank with 15psi??
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Joined: Mar 2004
Posts: 2,125
From: Connecticut
haha gotcha. But yes, like I said before..on a test block..with low power id feel much better blowing..well..not as bad..blowing a 2000$ block..as opposed to a fully built ***** to the walls 355..not to mention people making over 500rw bone stock..and only breaking pistons. I dont see why forged pistons/rods wouldnt be good enough to make all the power you could handle on the street.
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Joined: May 2006
Posts: 437
haha gotcha. But yes, like I said before..on a test block..with low power id feel much better blowing..well..not as bad..blowing a 2000$ block..as opposed to a fully built ***** to the walls 355..not to mention people making over 500rw bone stock..and only breaking pistons. I dont see why forged pistons/rods wouldnt be good enough to make all the power you could handle on the street.
I totally agree. It really also comes down to the tuning. The more budget you go, the less margin for error there is with the tuning. But I have also seen "all out forged" set-ups break under enough detonation just like anything else....
That said, stock set-ups can have also been proven to handle a lot with top notch tuning and no detonation
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Joined: Mar 2004
Posts: 2,125
From: Connecticut
Yeap, I know a guy who had a turbo motor built spent 7k and it blew before the turbo made it to the car. Having the engine built and tuned right are way more important.
Thread Starter
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Joined: Mar 2004
Posts: 1,399
Re:
Yeah it kinda makes sense just to replace the stock crank since I already have the engine broke down. I'm just trying to save money cause I'm on a budget. But since I plan on running 15psi I should just replace the crank with a forged one. Cause I would hate to tear it down again if it were to go in the future. - Mike
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Joined: Feb 2000
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From: Japan
There is no evidence that proves an aftermarket crank is any stronger than a stock crank. Me and a friend work on boosted LT1's all the time. NEVER seen a stock crank break. Have seen the crank "walk" a couple times on stock 2 bolt mains, but this was also around the 630 RWHP mark....but the crank itself was fine.....
Registered User
Joined: Mar 2004
Posts: 2,125
From: Connecticut
Yeah it kinda makes sense just to replace the stock crank since I already have the engine broke down. I'm just trying to save money cause I'm on a budget. But since I plan on running 15psi I should just replace the crank with a forged one. Cause I would hate to tear it down again if it were to go in the future. - Mike
Well if your on a budget where will this 15psi be coming from? IM guessing a supercharger?? Also, with that amount of boost...the word budget kinda goes out the window...can you give us some specs on what your doing?
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Joined: Mar 2004
Posts: 2,125
From: Connecticut
You can take a good stock crank way beyond factory power. Expect to spend the money to have it wet mag'd and the journals ground for a radius. Do not expect to get away with block work that is anything less than stellar. Cap walk would also be a means to the end. Even then, you would be flirting with longevity issues. The only reason I could see doing it is if you were ruled to do so. Then again, you could always do it for bragging rights. 
yessir
Thread Starter
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Joined: Mar 2004
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Yeah I had a sts turbo put on a couple years ago. I already upgraded everything there is such as the rear,fuel,etc,etc. Just not the motor yet. I just basically wanted to know if the stock crank could handle the 15psi. Cause I only plan on running 5psi most of the time and every so often have the high boost on the switch. So it's not like it's always running 15psi. But since I have the engine broke down I should replace everything with forged internals just incase I wanted to run more boost in the future. Which everyone knows you always get used to the power and want to run more in the future.
Thread Starter
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It's the t-67 upgrade. Supposed to handle up to 750 at the fly. I'm basically just hoping to reach 600rwhp at 15psi. It might even reach that level at 12psi. But yeah if I were to use the stock crank it would not be more then 600rwhp