lt1camaro383

Ai 226 / 234 - .569/.570 - 110 LSA

I would just like some input about what type of spring some of you guys used.

wrd1972

iTrader: (12)

Why not call AI and ask them since you are using their custom spec cam? Are you using their heads too?

quik95lt1

iTrader: (7)

I'd run the PAC 1218's on it personally but give AI a call they will direct you in the best direction....

Verz

iTrader: (21)

I have the LE version of that cam and im running patriot golds and so far so good

AZ2ENVY

iTrader: (2)

Id do the PAC 1518s personally

Camaroking1996

ZL1LT1 what heads and cam are you using?

AZ2ENVY

iTrader: (2)

AI 200cc heads and a Comp XE 233/239 .601 .610 111lsa Custom Grind

Camaroking1996

Are the PAC 1518's the springs that come with the heads or did you put them on yourself?

AZ2ENVY

iTrader: (2)

I put them on myself .

Camaroking1996

Why did you switch out the ones from the 200cc heads?

95mysticta

iTrader: (4)

Im running the PAC 1518s on my AFRs.

Camaroking1996

What makes the PAC 1518's better than the other springs out there?

trilkb

iTrader: (4)

verz, when you say golds which do you mean?

OP, If your running oem heads with stock valve seats remember that installed height will be MAX 1.750. Some places may tell you to install such and such springs at 1.780, and unless you machine the valve seats/heads you cannot do it. Just a little tid-bit of info that i wish someone gave me befor i wasted time and money!

Wicked94Z

iTrader: (26)

I wouldn't install any 1518 or similar beehive any higher than 1.74. I like very few hydraulic roller springs installed any higher than 1.78. My personal springs are setup at 1.84 and I have over .690 lift on both sides.

Wicked94Z

iTrader: (26)

They're nitrided and are basically indestructible and very long lasting in a correctly setup valvetrain. They're old school tech now IMO, there's a few other beehives nowadays that blow them out of the water. For the OPs application a 1218 or 1518 will suffice.

Camaroking1996

Wicked what springs would you say that could blow the PAC out of the water

Wicked94Z

iTrader: (26)

Other PAC springs and a Manley spring. The most you can get out of a 1518 is ~150/340 with .610 lift and that's installed real tight. I can do ~165/385 or ~165/375 with drop-in replacements for the 1518 at the same price. Or if you want to go real radical with the lobe profile I have a ~190/420 spring that will drop-in with a custom set of spring seats to work with stock length valves. Cost there is about 100 bucks more for both the springs and custom seats. All offer better valvetrain control than the popular dual springs on the market, 1518s are just a little light on pressure for more aggressive cam combinations.

Camaroking1996

What Manley springs are you exactly talking about?

Wicked94Z

iTrader: (26)

I've done alot of research on this stuff and don't feel like giving out info on a site I don't sponsor, I have an sponsorship on LTxtech.com if you'd like some more information

Camaroking1996

Can u pm me the info?