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Perfect Circle Engines

LS1/LS2/LS6 CNC Head Package

LS1/LS2/LS6 CNC Head Package

Regular price $1,755.00 USD
Regular price $1,830.00 USD Sale price $1,755.00 USD
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CNC Chambers


Fully Assembled and a true ready-to-install cylinder head package. 

Rated for and tested at 1000+whp

15* Cathedral Port

230CC Intake Runner (CNC Ported)

2.00"/1.60" Manley Valves

Brian Crower Beehive Spring kit (Max lift .600")

Bronze Valve Guides for improved valve stem life. 

Newen CNC Valve seat profiles for max efficiency and concentricity. 

Centroid 5-Axis ported for the most consistent runners on the market.  

CNC Chambers optional*

355-T6 High Density Aluminum heads with thicker deck for boosted applications. 




LS1 Flow Chart
Lift Intake 
 .200" 157 cfm
 116 cfm
 .300"  210 cfm
 157 cfm
 .400"  264 cfm
 195 cfm
 .500"  299 cfm
 217 cfm
 .600"  312 cfm
 225 cfm


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