Extensive CNC and dyno testing has resulted in one of the most affordable and powerful LS7-based cylinder heads available! Flowing up to 53 CFM more than the stock GM LS7 head, the all-new PRC cylinder heads offer both unmatched power and airflow! The 285cc runner is recommended for higher HP applications with a minimum bore size of 4.125". Come with .660 lift dual springs.
Precision Race Components LS7 CNC 285cc ported cylinder heads. These cylinder heads feature Precision Race Components' all new 6-bolt LS7 cylinder head gaskets!
Extensive CNC and dyno testing has resulted in one of the most affordable and powerful LS7-based cylinder heads available! Flowing up to 53 CFM more than the stock GM LS7 head, the all-new PRC cylinder heads offer both unmatched power and airflow! The 285cc runner is recommended for higher HP applications with a minimum bore size of 4.125".
The PRC LS7 cylinder heads is available with standard stainless valves, hollow-stem intake, and titanium intake valves. If you are going to run the stainless steel intake valves, we recommend limiting total valve lift to no more than .616" due to the weight of the intake valve. Upgrading to the hollow-stem intake valve will shed significant intake valve weight and allow for additional lift. The titanium intake valves will be the lightest choice of the three choices and offer the best lift possible!
Cylinder Head Specs:
Valve Angle: 12 Degree
Intake CC: 285cc
Intake Valve: 2.250"
Exhaust Valve:1.610"
Chamber Size: 70cc
LS7 |
LS7 Exhaust | PRC 285cc LS7 Intake |
PRC LS7 Exhaust | |
.200 | 161 | 114 | 169 | 119 |
.300 | 227 | 171 | 248 | 179 |
.400 | 291 | 193 | 311 | 211 |
.500 | 330 | 203 | 353 | 224 |
.600 | 351 | 209 | 386 | 235 |
.650 | 353 | 204 | 393 | 241 |
.700 | 353 | 209 | 407 | 246 |
SKU | PRCLS7285cc |
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Manufacturer | Precision Race Components |
Application Guide | All GenIII powered GM Vehicles |