Name:
PRC 220cc 5.3L Stage 2.5 CNC Ported Heads
Item#:
199-PRC2.55.3
ALL NEW UPDATED Precision Race Components 5.3L stage 2.5 CNC ported cylinder heads. Dyno results have shown up to 50rwhp gains with the addition of these cylinder heads.
This all new 5.3l cylinder head program offers smaller sized runners, upgraded valves, & PRC Valve Springs! The all new cylinder head is a result of over 6 months of testing & tweaking in effort to offer the best combination of runner size, and value!
Side by side flow testing has shown over 15cfm improvement over a popular competitors 225cc as cast cylinder head! This cylinder head was designed to be the ultimate in bolt on cylinder head for customers wanting to keep pricing down with stock castings!
Flow Data:
3.910" Flow Plate - No Exhaust Pipe
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Lift |
Intake Flow |
|
Exhaust Flow |
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.200" |
147 cfm |
|
111 cfm |
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.300" |
206cfm |
|
145 cfm |
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.400" |
254 cfm |
|
185 cfm |
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.500" |
291 cfm |
|
204 cfm |
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.600" |
312 cfm |
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223 cfm |
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The PRC Cylinder Heads Feature:
- Brand New GM 5.3l Based Cores
- Smaller Combustion Chambers For 10.75:1 Compression
- Stainless Steel 2.02"/1.575" Valves
- PRC Double Spring Kit Complete With
Springs, Titanium Retainers, Seats, & Seals
- Completely Assembled & Setup To Your Specs!
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