Power Products, Power Plus GM LS3 Square Port Heads, Assm. |
| Item Number: PVT54464K20 |
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| Fully CNC machined for the perfect street/strip combination. The 70cc CNC'd chambers are designed for 4.000" or larger bores. Precision cast from A356 aluminum. Designed to use most LS3-style intake manifolds and components. Features include 8mm bronze manganese guides, hardened valve seats, large spring seats, and multi-angle valve job. Assemblies feature 2.165"/1.600" stainless valves, Howards Cams valve springs and chrome moly steel retainers. |
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