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Old 07-14-2017, 05:37 PM   #7
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Join Date: Mar 2007
Location: Lake Orion, Michigan
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Default Re: Hollow stem valves

Quote:
Originally Posted by Rob Wright View Post
It matters a lot if you have a cam with "iffy" lift curves. You can easily lose 1,000 RPM of peak limiting speed by changing to solid stem from hollow in some combinations.

For heads popping off valves, I'll bet a hundred they had severe bounce at closing. That's generally what will make things break. Good thing some people test this stuff.
I wonder who recommended the spintron test...well worth it.. no guessing or mismatch parts...Thanks Rob!! Luke SS 311
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