Posted By: lifted85
valve springs - 04/14/14 11:05 PM
ok guy's i will be running a comp XE256H in my 74 318 motor, now summit say's comp cam's recommend Valve Springs 926-16, cant i run the comp 901's & still be safe??
valve springs
Posted By: RapidRobert
Re: valve springs - 04/15/14 01:43 AM
do either Comp or Summitt have published open/closed specs for both of those springs?
Posted By: Dcuda69
Re: valve springs - 04/15/14 02:06 AM
Quote:
do either Comp or Summitt have published open/closed specs for both of those springs?
That's what you'll need as well as installed height and coil bind specs. 
Posted By: dogdays
Re: valve springs - 04/15/14 05:52 AM
It's so easy to look up.
The 926 installed at 1.8" has 109 seat pressure and spring rate of 415 lb per inch. So if your 318 is like mine it has installed height of 1.6" so seat pressure would be 192 lb. sounds too much to me, but what do I know?
The 901 has 101 at 1.6 IH and spring rate 353 lb per inch. I believe board members have used that spring on similar cams successfully.
R.
The 926 installed at 1.8" has 109 seat pressure and spring rate of 415 lb per inch. So if your 318 is like mine it has installed height of 1.6" so seat pressure would be 192 lb. sounds too much to me, but what do I know?
The 901 has 101 at 1.6 IH and spring rate 353 lb per inch. I believe board members have used that spring on similar cams successfully.
R.
Posted By: lifted85
Re: valve springs - 04/15/14 07:40 AM
i know hence i did look it up, my question was can i run the 901's safely..
Posted By: 65rbdodge
Re: valve springs - 04/15/14 01:02 PM
run the 901's
that's what I had on the 302 heads I was using on the 318 I had the 256 cam in, that what comp says to use-
http://www.compcams.com/Company/CC/cam-specs/Details.aspx?csid=625&sb=0
that's what I had on the 302 heads I was using on the 318 I had the 256 cam in, that what comp says to use-
http://www.compcams.com/Company/CC/cam-specs/Details.aspx?csid=625&sb=0
Posted By: mike s
Re: valve springs - 04/15/14 06:27 PM
Try a set of edelbrock springs from their rpm heads. Perfect for that small cam and very inexpensive.