Brand New set of PRC stg 2.5 5.3L heads. Specs below are from TSPs website. I planned to install these on my LQ9 but they have 61cc Chambers and that would put me at 11.4 CR and for me, thats a little high for 91 octane and I dont feel like changing my setup for e85.

$1100 Shipped They will be sent in original packaging.


All Precision Race Components (PRC) cylinder heads come fully CNC-ported and machined using state-of-the-art technology.

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

NEW GM 862 or 706 Cores
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" 312 cfm 223 cfm

 

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