Product Description
PRC LS3 Cylinder Heads | 255cc | CNC Ported
Texas Speed & Performance have been at the forefront of LSX Performance from Day One!
Responsible for setting & breaking almost every record, a major key to their success has been the R&D that goes into the Texas Speed Cylinder Head range known as PRC.
The Precision Race Components range offers a large selection of high performance cylinder heads to suit all performance applications & all made, machined & ported in-house in USA.
Your New PRC CNC Ported 6 Bolt Cylinder Heads Include
- 100% USA Made 6 Bolt LSX LS3 Port Castings
- 60-68cc Combustion Chamber options
- 255cc Intake Runners
- Built In Rocker Pedestals (No Rocker Stands Required)
- PAC .660" Dual Valve Springs Incl Titanium Retainers *Optional upgrade available
- 12 Degree Valve Angle
- 2.170" Stainless Steel Intake Valves (Optional Upgrades Available)
- 1.600" Stainless Steel Exhaust Valves
- CHE Bronze Valve Guides
- Available To Be Machined To 65cc Chamber While Retaining PTV Clearance
*Note: these are supplied as a complete assembled head (not including rockers).
Rockers are sold separately to suit your application.
PRC CNC Porting Process
We often get asked - What exactly happens with my heads when they get CNC machined?
Good question. We all know that CNC heads are good. Why? Because it is common knowledge, However lets have a look at what the process is for your cylinder heads that gain so much horsepower & torque!
- CNC machining of your cylinder heads intake runner
- CNC machining of your cylinder heads exhaust port
- CNC machining & porting of the combustion chamber to specified CC
- 5 Axis CNC cutting of your cylinder heads valve seats
- CNC cut valve spring seats
- Machine the deck face to increase compression
How Do They Work?
- 255cc Runners for max effort stock cube LS2/LS3/L99/L92 engines looking for a 370cfm cylinder head that can be aggressively milled & still keep better than stock p/v
- 260cc Runners For LS3/L99/L92 stroker engines needing a 380cfm+ cylinder head!
|
Lift |
Intake Flow |
Exhaust Flow |
|
.200" |
157 cfm |
117 cfm |
|
.300" |
224 cfm |
170 cfm |
|
.400" |
281 cfm |
205 cfm |
|
.500" |
329 cfm |
225 cfm |
|
.600" |
358 cfm |
235 cfm |
| .650" | 366 cfm | 240 cfm |
| .700" | 369 cfm | 243 cfm |
Want To Chat With Us To Discuss Your Cylinder Head Upgrade?
Sure! Give us a call on (03)8595 4343 OR Simply click Get In Touch & schedule a time that best suits you. We will have one of our sales consultants contact you at your convenience.
Alternatively, We are available for Live Chat right now!
Buy NOW!
Shop with confidence with free freight Australia wide & discounted pricing.
