To get the latest news about Vigilante Performance's sales and new products, please enter your email address below.

  Home > Cylinder Heads > ProMAXX Cylinder Heads > Chevrolet _ LS Series >

ProMAXX C/H_Shocker_GM LS2/LS6_227cc_Stage II CNC Port_2.080/1.600_59cc_Hydraulic Roller_.650 Lift_Steel Retainers
ProMAXX Cylinder Heads

Photo may not be actual product

  

Ships from Supplier
Price $1,911.00


Product Code: PMX-2029

Description Technical Specs
 


ProMAXX 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 cores to ProMAXX.

Features:
  • Professionally designed CNC ports
  • 227cc Fully CNC ported in the USA
  • 5 angle valve job
  • Bronze guides
  • Diamond honed guides


Assembled heads feature:
  • One piece stainless steel valves
  • 21-4N back cut, swirl polished
  • Multiple spring options
  • Designed, machined and assembled in the USA
Flow Chart
2.020 Intake _ 1.570 Exhaust
Lift .100 .200 .300 .400 .500 .550 .600
Intake 74 149 212 259 284 293 300
Exhaust 65 121 159 192 219 225 229

2.080 Intake _ 1.600 Exhaust
Lift .100 .200 .300 .400 .500 .550 .600
Intake 74 149 212 259 284 293 300
Exhaust 65 121 159 192 219 225 229
Flow Data: cfm @ 28 inches of Water


Browse for more products in the same category as this item:

Cylinder Heads > ProMAXX Cylinder Heads > Chevrolet _ LS Series