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JMS-1

  • Karma: +0/-0
crankshaft question?
« on: September 18, 2009, 03:15:23 PM »
can someone tell me what hp and rpm's a forged Chevrolet 396 crank #3856223 will handle? at what point would i want to go aftermarket? it is std/std , nitrided,  non cross drilled. thanks..
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  • Boat #1: 79 Miller
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HDriderTH

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Re: crankshaft question?
« Reply #1 on: September 18, 2009, 06:49:59 PM »
run it. prolly good to 900 hp or so
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'82 Sanger Bubble deck, Blown 454....V-drive

JMS-1

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Re: crankshaft question?
« Reply #2 on: September 19, 2009, 09:30:01 AM »
Quote from: HDriderTH on September 18, 2009, 06:49:59 PM
run it. prolly good to 900 hp or so
if you don't mind me asking, what crank and rods are you running and how much boost are you puting to them?
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HDriderTH

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Re: crankshaft question?
« Reply #3 on: September 19, 2009, 10:26:26 AM »
I believe it's a stock crank and dimple rods. 9lbs at 6000rpms. I've never had it apart, it was originaly  built twenty five years ago before they even had all these aftermarket cranks n shit. They baught the parts new from chevy, 990's etc.
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Marcsrollin

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Re: crankshaft question?
« Reply #4 on: September 19, 2009, 11:13:46 AM »
I have seen GM steel cranks used in 1400hp applications! I am not saying yours will do it , but I have seen it done!
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  • Boat #1: 1978 TX-19 Youngblood
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Taco'd "a person or people that show up with one lake lice and a family of 50 and cram 3 people at a time on it with no disregard to boating rules or ethics. Usualy crap in toilets and throw shit paper in trash cans. Hang out at the boat ramp like its a swimming hole. Have zero insurance on anything they own and dont give two shits less about your property."

JMS-1

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Re: crankshaft question?
« Reply #5 on: September 19, 2009, 12:41:56 PM »
i was just thinking if it would withstand an 8-71 and injection in a v drive. i am guessing it will if i don't abuse it to much. thanks for the help......
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