ls1 down under

I have purchased the BTR stage 2 cam but and wondering about the springs to use.

I have laying about home an unopened box of comp double valve springs #26926
Outside Diameter (Outer): 1.320"
Inside Diameter (Outer): .920"
Inside Diameter (Inner): .654"
Seat Load: 129 @ 1.835"
Open Load: 470 @ 1.160"
Coil Bind: 1.100"
Spring Rate (lbs/inch): 505
Max Lift: .675"

Will these springs be fine to use for the BTR stage 2 cam ?
(227/234 , .614/.574, 113+2)

Darkman

iTrader: (2)

Not with stock rockers - too much open spring pressure. The BTR website, regarding that cam, indicates: "Lift approaching .650" or more while using stock 15 degree rocker arms with too much open spring pressure can damage valve tips long term. We recommend maximum lift of .630" and maximum open pressure of 400 lbs when using stock rocker arms."

Baconz28

I would call Brian directly and ask him. Sure he can help you out.

BKsNHRA

iTrader: (4)

They look like they would handle the cam fine but they will also wear out the rockers and valve tips. They are a bit over kill for the application.

ls1 down under

Yep I agree! To play it safe i will get the btr platinum spring kit.