243/799 HEAD PORTING SERVICE
Many hours of R&D have gone into the development of this stout catherdral port CNC program. With outstanding flow numbers and an efficient port shape, the LME CNC ported LS1 243s bring value and performance together.
## By specifying your cam lift LME will assemble your cylinder heads with the proper spring installed height. This will result in optimal spring pressures and coil bind distance for maximum performance. Please include rocker ratio to ensure accuracy. (example: .650" lift with 1.8 ratio intake and exhaust)
All Cylinder Heads Are Priced As Pairs **CORE CHARGE WILL BE REFUNDED WHEN USEABLE CORES ARE RETURNED BY CUSTOMER
| FLOW NUMBERS WITH 4.125" BORE @ 28" WATER | ||||||||||
| LIFT | .100" | .200" | .300" | .400" | .500" | .600" | .700" | VALVE SIZE | ||
| INTAKE | 75 | 146 | 226 | 292 | 330 | 346 | 359 | 2.125" | ||
| EXHAUST | 63 | 127 | 171 | 216 | 254 | 265 | 271 | 1.590" | ||
*Flowed with radius inlet intake/no pipe exhaust
|
Intake Volume (cc) |
320 |
Rocker Config. |
GM LS1/LS2/LS6 |
|
Exhaust Volume (cc) |
118 |
Intake Port Config. |
GM LS1/LS2/LS6 |
|
Chamber Volume (cc) |
61.5 |
Head Bolts/ Cyl. |
4 |
|
Valve Guide Material |
Factory Steel |
Valve Angle (degrees) |
12° x 3° cant In. 12° x 1.5° cant Ex. |
LME Standard Head Porting Process
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Parts: New 2.020" Stainless Oversize intake valves, New 1.570" Stainless Oversize Exhaust Valves, LME .660" Lift Spring Kit w/ Titanium Retainers.
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