I agree with 53Bowtie 10 year 100k mile old springs may not survive and its worth the insurance plus I want to keep the motor alive for when it goes into my other project.

 

Toss in a set of 60 dollar ls6/ls9 springs if you plan to boost it

Stock springs won't be happy for long

Also depending on goal for power you may want to do head studs and depending on yr of motor MLS gaskets vs the graphite ones

Also depending on yr motor you'll want to vent all 4 corners of the motor

 

The motor is a 2005. and ls9 valve springs seem like a good cheap upgrade ill put that on the list!

 

If you're staying under 15 psi, stock headbolts and head gaskets are fine.

Over that, ARP head studs (not the chinese crap studs) and LS9 headgaskets.

The 4 corner steam vent can't hurt I guess but I'm not convinced it's needed less than 1000.

As far as springs, get the best you can afford. After snapping a PAC beehive, I went straight to Tooley dual platinums with Ti retainers.

 

15 psi isn't a number you can go off of

15 psi from turbo 1 may make 500rwhp
15 psi from turbo 2 may make 1000rwhp

Vents been proven to help the hot dead spot cylinders

And tooley springs are Pac springs

 

Quik, I love how u gotta contest everything.

15 psi is a general number, there will clearly be variance from setup to setup, but you can give a ballpark number based on displacement and psi.

vents haven't been proven to do ****. In fact, most stuff in this field isn't proven, just personal he said she said.

tooley springs may be pac, but you completely missed the fact that i was referring to now running double springs vs singles.

 

things get contested when theres an opening to prove as the experience i have states otherwise. ive pushed things hard for many yrs on various platforms to get the knowledge i have today that i share

example you stated 15psi which that is such a general statement, saying joe smoe can run 15 psi on stock head bolts can cause him to have a failure. now why would you chance that? Ive ran 16psi on stock head bolts in the past before lifting a head, and ive ran 11 psi before lifting a head... one setup made 650 rwhp and other made 800rwhp

also have to look at cylinder pressure and not just boost, everything plays a role into that setup

as for the coolant mod, you may want to spend some time reading up on things kurt Urban has spoke of since 2006 with boosted setups...Just cause you dont read it on Performance trucks doesnt mean that the info isnt out there


you can easily take a test for yourself and do it with EGT probes in each cylinder or do it with a temp gun when you block a motor off vs venting it

a single spring can hold up and for longest time Stock48 ran singles
and just cause tooley is the latest craze today doesnt mean his product is the best out there

i had a set of his springs where not all of the springs matched up to what was claimed by them

 

You were likely running ragged tune causing the failure.

Furthermore, as you said all based on a single persons experience aka nothing scientifically proven.

As for single springs, I believe you've ragged on stock48s practices on another site, so I find it funny you reference him here.

 

That's your opinions based on very limited experience

Also if you aren't aware who Kurt urban is and what he has done to the LS game then there's no more to be said

 

You comparing what Kurt Urban did to a stock motor on low boost, nothing more needs to be said