These springs run harder, rev higher, and live longer. Isky Tool Room (Std) and Rad-9000 (Rad) racing valve springs are some of the very best valve springs made. Valve springs sold in complete engine sets (16).

Manufactured to the highest standards in the industry
Guaranteed for 1,000 racing miles
Each spring thoroughy tested at the factory

NOTE: Machining of valve seat may be required if spring O.D. is larger than 1.250".

Charts

Valve Spring Application Chart (GIF)

Guides & Documents

Valve Springs Guide/Document (4509985)

CARB Warning

For race/ off road use only

Emissions warning: this part only legal for sale or use in California for racing (competition) vehicles which may never be used, registered, or licensed for use upon a public highway. Any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. There are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.

CARB warning

Specifications

KEY SPECS
Brand	Isky Cams
Valve Spring Style	Select Type to see
Maximum Lift	.70"

GENERAL
Open Pressure	600 lbs. at 1.30"
Seat Pressure	245 lbs. at 2.00"
Outer Spring O.D.	1.56"
Outer Spring I.D.	Select Type to see
Inner Spring O.D.	1.04"
Inner Spring I.D.	.74"
Sold in Quantity	Set
Solid Height	1.20"
Notes	Set of (16)