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Old 09-08-2003, 07:51 PM
  #41  
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Kaama,

You shoulda' called Bruce (Crower) or one of his boys up and explained to him their mistake and your situation. I'm sure a pair of their cranks or billet rods woulda' smoothed things out, LOL.
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Old 09-08-2003, 08:07 PM
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so budah i should go with 140 lbs spring now how will that help it live longer?
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Old 09-08-2003, 08:13 PM
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Better able to preven valve float and will keep the lifter on the lobe as the rpms increase.
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Old 09-08-2003, 08:42 PM
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Originally posted by Monty
Better able to preven valve float and will keep the lifter on the lobe as the rpms increase.
I agree.
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Old 09-08-2003, 09:10 PM
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the reason i asked i did not want to kill the lifter. also why does crane only recommend 130 lbs if that is not enough
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Old 09-29-2003, 07:29 AM
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I ended up changing the cylinder heads I'm going to go with, instead of the "as-cast" AFR 305's, I'm going to get the CNC ported AFR 315's. The intake flow is increased 20+ cfm across the valve lift range, with similar improvements on exhuast flow. More efficiency = more power.

So now I'm looking at:
RPM.........HP.......TQ
2000.......249......653
2500.......322......676
3000.......386......676
3500.......448......672
4000.......503......661
4500.......552......644
5000.......578......607
5500.......580......553

AVG.........452......642

Last edited by Monty; 09-29-2003 at 07:33 AM.
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