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ShopChevrolet-Pontiac-GMC05-13 Corvette C6Engine & ValvetrainCylinder Heads → PRC Stage 2.5 5.3L CNC Ported Heads - CUSTOMER-SUPPLIED CASTINGS
PRC Stage 2.5 5.3L CNC Ported Heads

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PRC Stage 2.5 5.3L CNC Ported Heads


base price $1,250.00
item# 199-PRC2.55.3
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Click Here to SEE why we build better heads! 

All Precision Race Components (PRC) cylinder heads come fully CNC-ported and machined using state-of-the-art technology. The price listed is for you sending your 5.3L cylinder head castings to us for our stage 2.5 setup. The price does NOT include the cylinder head castings!

PRC's stage 2.5 5.3 Cylinder Heads come standard with the following options:


  • 2.02"/1.575" Stainless Steel Valves
  • PRC .650" Lift Dual Valve Spring Kit Complete with Dual
    Springs, Titanium Retainers, Seats, & Seals
  • Completely Assembled and Milled to your Specifications
  • 58-63cc Chambers


All PRC cylinder heads are extensively researched and tested. The flow data below shows the superior performance of the PRC stage 2.5 5.3 cylinder heads!

 3.910" Flow Plate - No Exhaust Pipe

 Lift Intake Flow Exhaust Flow
 .200"  147 cfm  111 cfm
 .300"  206 cfm  145 cfm
 .400"  254 cfm  185 cfm
 .500"  291 cfm  204 cfm
 .600"  308 cfm  223 cfm


You also have the option to upgrade to the PRC .675" Lift EHT Dual Valve Spring Kit. This spring kit is the top of the line and offers almost double the life of other valve spring kits on the market! The following items are included in the EHT dual spring kit:

  • Dual Valve Springs Rated to .675” Lift
  • Precision-Machined Titanium Retainers
  • Hardened Machined Spring Seats
  • New Viton Valve Seals


With all PRC cylinder heads, quality and performance are our two highest priorities! In addition to performance, you will not find a better performing cylinder head at this price (cost is for the pair!). Call one of our sales consultants today if you have any questions or if you would like to discuss your specific application.

Spring Kit  

Base Price: $1,250.00
Customized Price: $1,250.00

Your Item Is Ready To Purchase!


Related Tags: 1   1.0   2.5   215cc   225cc   227cc   235cc   237cc   247cc   265cc   285cc   3   3.9"-4"   400+CFM   5.3L   6.0L   65cc   7.0L   72cc   74cc  
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