thanks good info. Could i just buy some springs that are a little stiffer than the recommended springs and call it good?Comp recommends their 987-16 springs for that cam.
http://www.jegs.com/i/COMP Cams/249/987-16/10002/-1
These are 121 on the seat and 343 open I believe. Probably no better than the stock AFR 185 springs. I believe they are around 130 on the seat. However, I have heard many say that Comp cams under rates their need for spring rates, meaning their cams could use a little more pressure than they recommend.
Like someone else said, you may want to confer with the pros, Ed would be a good place to start, but his springs are very expensive. He sells Pac Alloy springs, and I believe the new AFR Renegade heads are equipped with Pac Alloy springs already.
Joe
could i use the same valve spring specs as you? I am planning to spinning her to 6500Well I currently run an xe274 cam.... But I already had springs rated for 110 on the seat & 310 open installed for a similar cam. No issues; but I do not plan on rpm'ing the heck out of it either.....
no not sure,what ever came with afr 185 #1387 heads. My motor blew this fall. A valve dropped down in my piston and not sure if its from valve float or from a week spring or valve. So i want to get some really good springs so this doesn't happen again
I think it was around 6500 or so, the cam pulls like a freight train with the set up i have so its easy to over rev ithow high did you rev it when it blew?....i was planning at shifting around 6000....im really worried now!
Ya man i feel ya. I don't know much about springs or how to select them. I am hoping somebody will help me out with that part. I guess the comp springs are a little underrated for what you need so don't go and call up comp if you are planning to spin the motor as high as me.its a 331 that i pieced together but built by an engine builder,i supplied the heads and most of the parts,i asked him to upgrade the springs and he said he would,im kind of learning as i go so i left it up to him to pick witch ones, but looked at the bill today and i don't see springs on it....called today also but he wasnt there to talk too......thought i did it right but now i am wondering...!
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