CNC Ported cyl. Heads
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LS Series Heads
| 
LS1 CNC PORTED
ASSEMBLED CYLINDER HEADS WITH NEW SS VALVES
| TECHNICAL SPECIFICATIONS : | |
| Intake Valve Diameter: | 2.020" |
| Exhaust Valve Diameter: | 1.570" |
| Intake Port Volume: | 222cc |
| Exhaust Port Volume: | 83cc |
| Chambers CNC Machined | Yes |
| Chamber Volume: | 64-71cc |
| 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 | 65.6 | 150.1 | 216.1 | 248.1 | 263.5 | 282.2 | 296.4 | 306.5 | 309.3 | 311.5 |
| Exhaust Flow @28" H2O | 51.8 | 104.9 | 140.4 | 166 | 194 | 204.8 | 216 | 218.6 | 221.8 | 227.1 |
Flow figures are not inflated for sales purposes.
Calibration is performed on both Intake & Exhaust side of bench from 50 to 450 cfm using 11 sharp edge orifice plates.
Flow bench numbers should not be the primary concern when purchasing your next set of cylinder heads.
Porting for Power ! NOT Flow Bench Numbers - Click Here for more info
RECOMMENDED USE AND INFO:
These CNC ported LS1 cylinder heads have enough airflow to produce over 570HP normally aspirated. We focused on stopping the dreaded factory intake high lift turbulance and increasing the airflow without extensively enlarging the runners as they are relatively large from GM standard. Special attention however was paid to the exhaust side of the cylinder head.
| 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. |
CNC346L401 | $ 965 |
| Assembled Cylinder Heads -LS1 241, 853 And 862 Castings |
H346L401HR | $ 2790 |
|
Consists of : |
||
| Valves - New Stainless Steel Intake & Exhaust - Ferrea | ||
| Springs - New Beehive | ||
| Retainers - OEM | ||
| Valve Locks - Comp Cams Chrome Moly | ||
| Valve Stem seals - New OEM | ||
| 5 Axis CNC Competition Porting - Chambers/ 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 | ||
| LS1 CNC Head & Cam Package Are Available |
Call |
CUSTOM LS SERIES CAMSHAFTS AVAILABLE - FROM $ 585
NEW OEM REPLACEMENT LIFTERS AVAILABLE - VL115/A FROM $ 212
DUAL SPRING UPGRADE ALSO AVAILABLE - CALL
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.