valve spring help?

warmpancakes

New member
I need help on selecting valve springs for my motor? the cam is the 412 and the heads are l-35 ported and polished, with 1.5 roller rockers. what soprings are you people are you using?
 

myclone

Donating Member
I like the conicals by comp cams for our mild cams. I have also read that some ppl are using the late model LT1 springs with good luck but I havent tried em myself.

10 degree locks/retainers are a good idea IMO just in case you go all out on a build later. Titanium retainers never hurt if you dont mind the extra cost (WAY over kill in our engines IMO but nice none the less).
 

warmpancakes

New member
whats considered all out? I have a billet crank,oliver rods, jepistons, bowtie block and a 72 series turbo with speed pro? how much farteher do i have to go to be considered all out?
 

myclone

Donating Member
warmpancakes said:
whats considered all out? I have a billet crank,oliver rods, jepistons, bowtie block and a 72 series turbo with speed pro? how much farteher do i have to go to be considered all out?

IMO youre in the the ball park.. Alum block, splayed valve heads, close to .600 lift cam, dry sump, TH400, and two 72s would prolly be all out IMO. :)
 

myclone

Donating Member
IMO youve got a pretty healthy build going there (trade ya my stock engine for it :wink: ). If you were a valve spring then they all youd see was the cam and a 412 is a fairly mild cam so you really dont need a humongusly (<is that a word?) big spring. The conical springs would suffice just fine and wouldnt break the bank. If you decide to go with a bigger can theyd have to be changed out though. The LT1s are cheaper I believe but I dunno what the specs are on em so they may or may not be ok with the 412.
 
Top