BlackGMC

iTrader: (31)

I am looking for a set of springs and just wondering what everyone is using these days... The cam i am looking at has a .581 lift. I know the 981s got a bad rep for the broken ones that sprang up, so I don't want those. I want a single spring that uses factory retainers and keepers...

Thanks in advance.

A Low Dime

iTrader: (13)

PAC 1218s are good for .600, PAC 1518s are good for .650

fastrt

iTrader: (48)

yep pac springs

jrmchevyman

Im going to be using the PAC 1218 (already bought them) for my tsp 220 with .581 lift they are very good springs and good alternative to the comp 918's even though the newer revised 918's are rated to .625.

I also didn't want to take a chance on the 918's.

Pac 1218 / 1518 are the way to go imo.

I have herd that the 1218's are good up to .610 lift but that is what I saw a few users post on different forums.

BlackGMC

iTrader: (31)

Has anyone used these springs from SDPC?

http://sdparts.com/details/pac-racing/pac1218

Beehive LS1 Springs, 0.600 in.Lift, Set of 16
$122.95
Part Number:
1218
Brand:
Pac Racing
SKU: PAC1218
Price: $122.95

High Performance stock style replacement valve spring. Can use stock LS locks and retainers, seat and seal.
Rated by PAC to handle up to .600 lift.

OD: 1.290
ID: .885
Max coil bind: 1.140
Installed Height: 1.800
Max Lift .600

Load @ 1.800 130lbs
Load @ 1.200 318lbs
Spring rate: 313.3 lb/in
Weight: 62 grams
Frequency: 29277 CPM

jrmchevyman

Those are the pac 1218's same thing. Yes they are good springs.

dlt76028

iTrader: (13)

I would use whatever those pac springs are that scott has. they obviously hold up to the abuse.

A Low Dime

iTrader: (13)

Im pretty certain he is running the 1218's.

I had 1518's on the 5.3 I built, but I never ran the motor.

budhayes3

iTrader: (19)

I've been tossing around the idea of a cam in the 224/228 .581./.588 112 range (for the 6.0), and I'm planning on PAC 1218's...if I can ever get the dough

BlackGMC

iTrader: (31)

I am planning on a 220/224 .581/.581 114+4 with a 6.0... I am wanting a nice DD, no idle lope, easy to tune and gooooood low end TQ...