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.568" lift cam - LS6 springs or 918s?

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Old 09-04-2008, 11:23 PM
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I'm using yellow ls6 springs. my cam is also 567. lift. no problems at all
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Old 09-05-2008, 06:50 AM
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There are some of the Thunder Racing cams that have very agressive ramp rates. The TR224 isn't one of their more agressive cams.
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Old 09-05-2008, 07:07 AM
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Originally Posted by InchUp

The question at hand was if the LS6 springs could be matched with the Comp Cams XR265 high lift camshaft. That has a nice duration set of 212/218 but with mild lift characteristics of .558" intake and .563" exhaust. Looks like the LS6 springs will do fine.

I used that exact cam on my old 01 z71, 212/218 .558/.563 114lsa, it was a custom grind due to the LSA, and i also used the LS6 springs with no problems, i was only shifting it at 6200rpm cause my tranny was still stock, that cam ran pretty good on that heavy truck..
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Old 09-05-2008, 08:06 AM
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Originally Posted by zippy
I have had 3 friends/customers that had their 918's create a window in their block.
what is this "windowing"????

Great spring info Zippy.
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Old 09-05-2008, 08:32 AM
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Hole in the side of the block.
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Old 09-05-2008, 08:44 AM
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Well this is some good info here, fellas. Thanks a lot. Looks like I'll be searching for a set of LS6 springs, which excites me because it saves me at least $100 over the 918s.
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Old 09-05-2008, 09:10 AM
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Originally Posted by zippy
Hole in the side of the block.
oh...you mean when the 918 stop working and the resulting damage. gotchya.
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Old 09-05-2008, 10:04 AM
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what about the 921 comps?
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Old 09-05-2008, 11:12 AM
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Originally Posted by 1BadAction
what about the 921 comps?
They're even stiffer than the 918's
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Old 09-05-2008, 12:14 PM
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ok captain obvious. LOL.

To clarify my question, are the 921s more or less durable than the 918s?
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