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Old 07-11-2008, 02:02 PM
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Default HP500EFI valve springs
Hi kan anybody confirm that this springs are the correct ones for a HP500EFI Crane Cam # 99896.

If not, whats the #?

Thanks and have a pleasant weekend
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Old 07-11-2008, 02:33 PM
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Use comp 929's
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Old 07-11-2008, 03:13 PM
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Ditto.....929's
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Old 07-12-2008, 10:13 AM
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The HP 500 carbed model used the Crane spring. When they went to the EFI they changed to the Comp Cams 929-16.
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Old 07-13-2008, 12:17 AM
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Do the 500EFI springs need to be changed every 250-300 hours like the HP's? I keep hearing two different stories.
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Old 07-13-2008, 12:13 PM
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Ok, 929-16 it is. Anyone know the spring rate closed and open?
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Old 07-13-2008, 07:49 PM
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We use Isky 8005SP !!!
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