PRC 225cc As-Cast Aftermarket Casting Heads & Cam Package
From Original price was: $2,907.19.$2,849.05Current price is: $2,849.05.
PRC 225cc As-Cast Cathedral Heads & Cam PackageOverview Take your 5.7L or larger cathedral-port LS engine to the next level with one of the highest flowing as-cast cylinder head packages available. This package…
Description
PRC 225cc As-Cast Cathedral Heads & Cam Package
Overview
Take your 5.7L or larger cathedral-port LS engine to the next level with one of the highest flowing as-cast cylinder head packages available. This package combines a pair of fully assembled PRC 225cc As-Cast cylinder heads with your choice of any compatible Texas Speed cathedral-port camshaft, allowing you to build the combination that best fits your horsepower goals.
The PRC 225cc heads feature a high-efficiency as-cast intake runner capable of flowing over 320 CFM, CNC-machined combustion chambers, premium valves, and our proven TSP/PAC dual valve spring package. Whether you’re building a naturally aspirated street car or a serious race combination, these heads provide the airflow needed to support exceptional horsepower.
Designed for larger displacement cathedral-port engines, these heads are recommended for 5.7L, 6.0L, and larger LS combinations. Due to the large 2.065″ intake valves, they require a minimum 3.903″ cylinder bore for proper valve clearance.
What’s Included
- Pair of PRC 225cc As-Cast Cathedral-Port Cylinder Heads
- Your choice of Texas Speed Cathedral-Port Camshaft
- TSP .660″ Dual Valve Spring Kit with PAC Springs & Titanium Retainers
Cylinder Head Features
- 225cc as-cast intake runners
- Flows over 320 CFM
- 62cc CNC-machined combustion chambers
- 2.065″ hollow-stem intake valves
- 1.600″ stainless steel exhaust valves
- Uses factory LS1-style rocker arms
- Designed for maximum naturally aspirated and boosted performance
Flow Data
| Lift | Intake Flow | Exhaust Flow |
|---|---|---|
| .100″ | 68 CFM | 56 CFM |
| .200″ | 145 CFM | 113 CFM |
| .300″ | 210 CFM | 164 CFM |
| .400″ | 257 CFM | 200 CFM |
| .500″ | 300 CFM | 214 CFM |
| .600″ | 318 CFM | 229 CFM |
| .650″ | 321 CFM | 230 CFM |
Fitment & Important Notes
- Designed for cathedral-port LS engines.
- Recommended for 5.7L, 6.0L, and larger engine combinations.
- Requires a minimum 3.903″ cylinder bore due to the 2.065″ intake valves.
- Your choice of compatible Texas Speed cathedral-port camshaft is included.
- If selecting a Melling oil pump, a single-roller timing set is required. Melling pumps will not clear a double-roller timing set.
This assembly is built to order. Choose your crankshaft, connecting rods and pistons above — the price updates as you select.
Additional information
| Weight | 288 oz |
|---|
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