Quote:
Originally Posted by Steve C.
I suggest Crower has not changed but in my old Crower catalog from 20 years ago they stated the same 68405 valve spring for all their solid flat tappet cams listed, from 240 at .050 up to 274 at.050.
68405 spring listed here on page 176
https://www.crower.com/media/masterc...x.html?page=10
Rated 110 at 1.700"
382 rate
0.980 coil bind
The old Crower information rated it at 104 lbs seat pressure at 1.700
( Information provided in this post does not represent any endorsement. And unless specified it is not based on personal experience and is offered for general interest only )
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I am using the flat tappet springs Kauffman suggested for the solid comp cam they sold me. It was of similar lift and a little less duration at .050. I believe it was a faster and more aggressive ramp than this cam.