TSP PRC 247cc CNC Ported Cathedral Port Cylinder Heads PAIR w/ TSP .660" Spring Kit and Titanium Retainers
Precision Race Components (PRC) all new cylinder head castings completed with 247cc runners. For 408 cubic inch and larger applications with 4.030"+ bore sizing.
The all new 247cc cylinder head is finally available for customers looking for the pinnacle of LS cathedral port performance. The new 247cc port has been flow bench tested to flow over 360cfm.
MADE IN THE USA!!
CAST IN THE USA!!
MACHINED IN THE USA!!
Features:
- 247cc Fully CNC Ported Intake Runners
- 84cc Fully CNC Ported Exhaust Runners
- 3/4" Deck Thickness
- Will accept up to 1/2" Cylinder Head Hardware
- TSP .660 Spring Kit w/ PAC Valve Springs & Titanium Retainers
- 68cc CNC Machined Chambers
- CHE Bronze Guides
- 2.120" Hollow Stem Intake Valves/ 1.600" Stainless Exhaust Valves
- Factory Rocker Friendly!!
- Minimum Bore Dia: 4.030"
| 247cc CNC Ported Flow Data (No Exhaust Pipe): |
| Lift |
Intake Flow
|
Exhaust Flow
|
| .100" |
66 cfm |
57 cfm |
| .200" |
147 cfm
|
117 cfm
|
| .300" |
228 cfm
|
170 cfm
|
| .400" |
282 cfm
|
206 cfm |
| .500" |
321 cfm |
227 cfm |
| .600" |
343 cfm |
235 cfm |
| .650" |
355 cfm |
241 cfm |
| .700" |
360 cfm |
245 cfm |
