Butler Performance Inc. - Stock Cast Iron Heads

Valve Springs - Stock Cast Iron Heads

Spring Measurements

Butler recommended valves- Pontiac Cast Iron Heads (non RAIV/SD) has an install height of 1.600" with stock length valves.

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Items 1-4 of 4
Description: 1.384 Dual Springs 117 @ 1.600, 240 @1.100, Coil Bind @ 1.000 (Set)
Item #: CCA-988-16
Condition: New
Price: $84.95

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Description: Crower Valve Springs 1.600" Installed Height (113 lbs.) 284 lbs@1.100"/304lbs.@1.050 / Coil Bind .950" (Set) *Can use up to .590lift on cast iron Pontiac heads without cutting spring seats*
Item #: CRO-68404-16
Condition: New
Price: $119.95

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Description: Type: Dual With Damper O.D. Outer: 1.440" I.D. Outer: 1.096" I.D. Inner: .750" Coil Bind: .980" Seat Load: 120@1.650"/132@1.600" Open Load: 319@1.100"/330@1.050" Rate (lbs/in): 363 Quantity: 16
Item #: LUN-73949-16
Condition: New
Price: $138.95

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Price: $5.95
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Items 1-4 of 4

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