[Tasoskossi]

Hello guys
I'm about to use a set of cams .409''in/ .352''ex lift. My question is what valve springs to use so i can be safe to increase maybe 500rpm.
k5-6 oem 36lb plus shim*??
k6 750 oem 47lb??
kibblewhite 60lb ??
thanks.

 

[TwistedMister]

carpenter racing one of those shops..

 

[Tasoskossi]

Let's say i have only these 3 options

 

[Beairsto Racing]

Ask your cam supplier, what the desired pressure is...then you can look at your options and make an informed decision.