Shocker 227 LS 1 & 2
(Sold in Pairs)
$1,601.00 – $1,911.00
Our custom 5 axis CNC machined GM castings make these heads a must have for any performance oriented GM LS series engine. These heads provide up to a 65 cfm improvement over the stock OEM versions. The 64cc chambers will increase the compression on a stock LS1 from 10-1 to 10.5-1. The 59cc chambers will increase the compression on a stock LS1 from 10-1 to 11-1. Based on other modifications, gains of up to 40 rwhp can be expected. These are a great choice for naturally aspirated engines and applications where 75-150hp nitrous systems will be used.
$200 Core charge is refunded to you when you return the core.
- Pro designed CNC ports
- 227cc Fully CNC ported in the USA
- 5 angle valve job
- Bronze guides
- Diamond honed guides
- Assemblies include: 21-4N stainless 1pc swirl polished valves, PAC springs & titanium retianers
- Machined and Assembled in the USA