60 or 90 lbs valve spring

[92cummins89]

Debating if I should go with 60 or 90 valve springs

Have an he 351 cw and 4 inch diamond eye

Plan to p pump it eventually goal is around 400 to 500 rwhp

[RCCUMMINS89]

What cam do you plan to run?

[92cummins89]

Tbh haven't gotten tht far was looking at the ones one the hungry diesel

[RCCUMMINS89]

60# over stock will do everything a ve will need.... unless one is going to run a 188/220 (or so) cam and then run high boost pressures (55-60+). At that point I would start looking at the ones Hamilton recommends.

The larger the cam, the higher the boost pressures, the higher the rpm... the stronger the springs need to be.

[92cummins89]

Question is would it hurt anything to get 90's over 60's tho just to already have it done and not having to buy them twice if u know wat I mean

[RCCUMMINS89]

Which "90s" are you looking at?

[BILTIT]

This is a good question, i have a set of new 60's but with the twin setup i am looking at doing i assume 90's would be a better option. Whats your thoughts eric?

[RCCUMMINS89]

I may be stupid (or ignorant) for not knowing this..... but who is actually making a 90# over stock valve spring for a 12 valve? I can't seem to find any.

[DodgeFreak]

only ones i've ever found was the 60 and 150

[DodgeFreak]

when I was looking at valve springs for my cousins 12valve Jason?? at cpp told me their 150# springs would be fine for his stock cam and that it wouldn't "wear it out" faster. my cousin never did get them so I have no idea if they are a good spring.

Jamie? Maybe....I'm horrible with names lol

[92cummins89]

Saw it on the hungry diesel

[BILTIT]

I may be stupid (or ignorant) for not knowing this..... but who is actually making a 90# over stock valve spring for a 12 valve? I can't seem to find any.

"Dynomite Diesel 90# Valve Springs set of 12 - HDVS-12"

http://www.thehungrydiesel.com/Dynomite ... DVS-12.htm

[Tacoclaw]

I ran 60# springs with my 188/220 and twins, didn't have anything catastrophic happen. I did have a fresh Cummins head put on and had the guy sink the valves in a little bit while he was porting it to help with piston clearance.

[RCCUMMINS89]

Those aren't 90# over stock springs, The 60# over stock springs are actually stronger springs.

My apologies on mis understanding the op.... I was thinking you were referring to 60 or 90 over stock.

[BILTIT]

Interesting, i didnt realize they were categorized in different ways. Makes me wonder what springs i have now.