Crower Cam, upgraded valve springs? - Defender Source
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Old March 9th, 2010, 10:37 AM
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Chris Davis
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Crower Cam, upgraded valve springs?

I am using the Crower 50229 cam in lieu of the 50227 (just for yucks) for my new rebuild. I know that it is recommended to use upgraded springs if the cam lift exceeds .430" which was not a problem for the 50227. The 50229 has a lift of .430 for the intake and .443 for the exhaust. Should I upgrade the valve springs? I know a couple/few of you are using the 50229--did you retain the original springs or can you recommend a different spring? Thanks!
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  #2  
Old March 9th, 2010, 01:30 PM
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Only if you are going to run the engine consistently above 5K rpm. Dunno about you but in my truck the engine rarely whirls over 3 grand. The heavier valve springs as you know are to reduce valve "float", which only happens at high rpm.
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Old March 9th, 2010, 02:54 PM
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springs are fine, you might want to get the billet rocker stands. I did the 230 and had a little taken off the valve guides.
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Old March 9th, 2010, 04:40 PM
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I thought changing the springs was to also reduce spring bind, not just the float--I may be wrong about that. I will measure the spring bind before firing it up.

Phillip--where did you get your rocker stands?
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Old March 10th, 2010, 06:51 AM
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Quote:
Originally Posted by Davis View Post
I thought changing the springs was to also reduce spring bind, not just the float--I may be wrong about that. I will measure the spring bind before firing it up.

Phillip--where did you get your rocker stands?
You are correct. Nothing to do with float really. It's all about the bind and I think you will get very close to that with the 229 cam.
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Old March 10th, 2010, 08:15 AM
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I got them from D&D they are spendy but cheaper than a broke rocker.
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Old March 10th, 2010, 09:33 AM
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Thanks, everyone.
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