LS1 CNC PORTED
ASSEMBLED CYLINDER HEADS WITH OEM VALVES
CNC Machined Chambers are NOT included
| TECHNICAL SPECIFICATIONS : | |
| Intake Valve Diameter: | 2.000″ |
| Exhaust Valve Diameter: | 1.550″ |
| Intake Port Volume: | 222cc |
| Exhaust Port Volume: | 83cc |
| Chambers CNC Machined | No |
| Chamber Volume: | OEM |
| Minimum Intake CSA | x.xxx” |
| Maximum Intake CSA | x.xxx” |
| Minimum Exhaust CSA | x.xxx” |
| Maximum Exhaust CSA | x.xxx” |
| Intake Seat Angle | 45 |
| Exhaust Seat Angle | 45 |
| Flow Test Bore Size | 3.910″ |
| Exhaust Flow figures with pipe | NO |
| VALVE LIFT |
.100″ |
.200″ |
.300″ |
.400″ |
.500″ |
.600″ |
.700″ |
.800″ |
.900″ |
1.000″ |
| Intake Flow @28″ H2O |
||||||||||
| Exhaust Flow @28″ H2O |
RECOMMENDED USE AND INFO:
These CNC ported LS1 are our most economical version. These heads retain OEM valves and do not have CNC Machined combustion chambers.
| Description | Pavtek Part # | Price |
| 5 AXIS CNC PORTING ONLY: | ||
|
5 Axis CNC Competition Porting – Chambers/ Intake/ Exhaust – Does not include cleaning, crack testing, valve guides, milling etc. |
CNC346L301 | $ 836.55 |
| Assembled Cylinder Heads – LS1 241, 853 And 862 Castings |
H346L301HR | $ 1761 |
|
Consists of : |
||
| Valves – OEM | ||
| Springs – New Beehive – Max .625″ lift | ||
| Retainers – OEM | ||
| Valve Locks – OEM | ||
| Valve Stem seals – New OEM | ||
| 5 Axis CNC Competition Porting – Intake & Exhaust | ||
| Multiangle Valve Seat Geometry | ||
| Backcut valves | ||
| K- Line bronze valve guides – honed | ||
| Surface milled | ||
| Springs measured & setup to suit cam to be used | ||
| Final washed and assembled | ||
CUSTOM LS SERIES CAMSHAFTS AVAILABLE – FROM $ 585
NEW OEM REPLACEMENT LIFTERS AVAILABLE – VL115/A FROM $ 212
ALL PRICING ABOVE IS BASED ON CHANGE OVER OR MACHINING OF YOUR CYLINDER HEADS.
CORES ARE AVAILABLE AT AN ADDITIONAL CHARGE- CALL FOR CURRENT PRICING.