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40cpe · 03-13-2020, 12:00 PM

For what it is worth, Gary (GOSFAST) over on the HAMB said that the Isky 185-G spring has a seat pressure of 80# at installed height of 2.000". I read somewhere that the Zephyr spring is 70#.

03-13-2020, 12:00 PM	#12
40cpe Senior Member Join Date: May 2010 Location: Star, MS Posts: 4,024	Re: Stock versus Performance Cams For what it is worth, Gary (GOSFAST) over on the HAMB said that the Isky 185-G spring has a seat pressure of 80# at installed height of 2.000". I read somewhere that the Zephyr spring is 70#.