TURBOPOWERED68

Need help picking springs, retainers and push rods.

The build 1999 6.0 with Aluminum 317 heads, MLS LS9 head gasket, ARP head studs, single Roller timing chain, summit rockers w/roller trunions, LS7 Lifters and a pair of turbos.

I am going with this cam
"TFS-30602003" 283/286, Lift .585/.585, Lobe Sep. 112 LSA
Duration at 050 inch Lift: 228 int./230 exh.

Which springs, retainers and push rods do you guys recommend?
Thanks for your help

Ls7colorado

iTrader: (3)

Pac-1218

TURBOPOWERED68

I doubt 175 closed is enough seat pressure.
Thanks for the reply

Ls7colorado

iTrader: (3)

Thats what most people use with that cam, if you already know what springs you need then why are you asking?

TimsLS1

If your using 175 seat pressure I wouldn't be using the LS7 lifters you propose either, you can collapse the lifter.

And if your implying that the person who tried to help you by suggesting Pac 1218 Springs was doing so becaused Pac 1218s have 175 closed spring pressure, he wasn't and they don't, they have 130 lbs closed spring pressure.

TURBOPOWERED68

because i am not sure.

TimsLS1

Sounds like it will be an expensive motor if it were mine I would use some good DUAL PAC springs or BTR springs and Hylift Johnson 2148 SE lifters that can easily handle the springs. If you use duals you usually get some warning re dropped valve or going to drop valve.

RonSSNova

iTrader: (3)

Many of us run the BTR platinum springs in turbo applications. They work excellent.
155 lbs seat pressure. They literally drop in.

TURBOPOWERED68

ordered them last night, should be here in a few days.

Just Chuck

PAC 1905 are almost the exact same specs. I've ran both, can't say which ones I like better. BTR springs look cooler.