stock crank limitations?
04-06-2009, 06:11 PM
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stock crank limitations? asumming a properly machined/clearanced/assembled block:
what are the limitations to a stock GM crankshaft? been thinking AI 200cc H/C/I and a 150shot to make things a little more fun.
assuming the typical AI 200cc setup puts down 430rwhp N/A and a 150shot might add 100 to 125rwhp (depending on tuning and brand) that's atleast 600 to the crank, spinning to 6800 to 7k each pass.
I'm only concerned about the crank at this moment, aftermarket rods and pistons are obviously being used.
what are the limitations to a stock GM crankshaft? been thinking AI 200cc H/C/I and a 150shot to make things a little more fun.
assuming the typical AI 200cc setup puts down 430rwhp N/A and a 150shot might add 100 to 125rwhp (depending on tuning and brand) that's atleast 600 to the crank, spinning to 6800 to 7k each pass.
I'm only concerned about the crank at this moment, aftermarket rods and pistons are obviously being used.
04-06-2009, 07:02 PM
#2
asumming a properly machined/clearanced/assembled block:
what are the limitations to a stock GM crankshaft? been thinking AI 200cc H/C/I and a 150shot to make things a little more fun.
assuming the typical AI 200cc setup puts down 430rwhp N/A and a 150shot might add 100 to 125rwhp (depending on tuning and brand) that's atleast 600 to the crank, spinning to 6800 to 7k each pass.
I'm only concerned about the crank at this moment, aftermarket rods and pistons are obviously being used.
what are the limitations to a stock GM crankshaft? been thinking AI 200cc H/C/I and a 150shot to make things a little more fun.
assuming the typical AI 200cc setup puts down 430rwhp N/A and a 150shot might add 100 to 125rwhp (depending on tuning and brand) that's atleast 600 to the crank, spinning to 6800 to 7k each pass.
I'm only concerned about the crank at this moment, aftermarket rods and pistons are obviously being used.
Assuming good machine work and a properly balanced rotating assembly.
04-06-2009, 07:54 PM
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I'm hoping the stock crank is ok. 
I'm running that set-up with Scat rods and Mahle powerpack pistons and will be hitting it with a 100 shot after I get a little stronger rear end.
I'm running that set-up with Scat rods and Mahle powerpack pistons and will be hitting it with a 100 shot after I get a little stronger rear end.
04-06-2009, 08:15 PM
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Stock cranks are about the best you can get without going forged, it should handle you setup no problem. Just make sure everything is balanced, that would be my biggest concern.
04-08-2009, 05:59 PM
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I figured 600hp or 7000rpm would be fine, but wasn't sure about combining both.
balancing the shortblock should be a no-brainer for power and longevity in any build, IMO...
thanks fellas
balancing the shortblock should be a no-brainer for power and longevity in any build, IMO...
thanks fellas
