LS1Silverado05

iTrader: (41)

Turbo Build Valvespring Advice?....The motor will essentially a stock long block for now just to see what we can push....I want to get some recommendations for what valve springs to use, as I am sure even on a stock cam the added cylinder psi would be pushing it on stock springs...

So stock 98 heads, stock cam, seeing about 8psi from a T70, staying around 6200 rpms, what would be the best spring set-up and are Ti Retainers recommended?

PREDATOR-Z

On your setup PAC 1218, titanium retainers a plus.

LS1Silverado05

iTrader: (41)

Would you go with them over Patriot Gold Dual Springs? I really have a hard time trusting single springs after the 918 fiasco...

willyfastz

The Pac 1218 or 1518 spring is a much better spring than the PSI duels. And the 1218 is all the spring you should need for your setup. Not real need for the Ti retainers on the beehive springs, as there's only a couple grams differance.

Set the spings up at the propper installed height with a good set of pushrods with the correct preload and you'll have a happy stable valve train.

99blancoSS

iTrader: (115)

agreed ^^^ The 1518 is the premium nitrided beehive.

PREDATOR-Z

1518 might be going overboard, you need enough spring not overkill. This is stock cam just boosted.

SweetS10V8

iTrader: (4)

You need to.... Beehives are the way to go in many applications. Many people make great springs. Pac springs are becoming very popular, Comp totally redesigned the 918. PSI is still out there... I ran the new (silver) 918s in my old setup and am going to run them in my new setup, CNC LS3 heads and Comp 219/235 .607/.621 113+4 A lot of people dont realize this either, some of the beehives can out perform the dual springs. But people still think in terms of "bigger/more expensive is better"

I studied this, and noted a 6 gram difference, The stock ones were 11g and Comp Ti retainers were 6g, I had to borrow a retainer from a friend so I dont knwo what the wieghts of other Ti retainers are.

As I was getting ready to make my purchase Comp released their Tool steel retainers for the beehive springs, So I got those. They were less than 1 gram heavier than the Ti, but are made of steel, which I'M sure wont wear away. Ti retainers can wear away over time.

I setup my springs using distance from coilbind, not by using installed height too. Might want to take that into consideration.

willyfastz

What distance from coil bind did you use. And the reason I didn't mention that is because it's hard to even get someone to setup srings using install hieght much less coil bind.

willyfastz

PZ with all the hype of duel spings how could a beehive be overkill?

PREDATOR-Z

Because of too much seat pressures for this application. It is just unnecessary. IMO, (also twice as expensive)

99_SS_LS1

iTrader: (4)

+1 on PAC beehives

99blancoSS

iTrader: (115)

Good point about overkill but IIRC the 1518 and 1218 are about identical if not exactly the same.
Cost is about $100 difference, both are true drop in so no changing of anything else either.

LS1Silverado05

iTrader: (41)

Ok, so you guys are saying that anything more than the PAC 1218s would probably be more seat psi etc than I need or want with stock cam/lifters?

Would the PAC 1218s still be the way to go if I decide to run a Z06 cam?...I dont really plan to spin much more than say 6200rpm...

Thanks for the input guys!

willyfastz

The PAC's 1218's will be just fine with the LS6 cam, they're some of the best springs you can buy.

willyfastz

It was sarcasime, which I know is hard to see on the internet.

vettenuts

iTrader: (4)

Did you mean "Patriot" duals? I never saw PSI mentioned by the OP and wouldn't want to confuse the two.

The extra processing steps on the 1518, in my opinion, are worth the extra money. They will make for longer life and a slower rate drop over time.

willyfastz

Yeah, which would be Associated springs.