LS7 HEAD PORTING SERVICE
By far the most established member in the LS engine family, the LS7, has proven time and time again to be the prime choice of late model hot rodders worldwide. Send us your GM factory cores and allow us to sculpt our proven port configuration and build you a set-up that will dominate any street or track you choose to do battle on.
## 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 the rocker ratio to ensure accuracy. (example: .650" lift with 1.8 ratio intake and exhaust)
*All Cylinder Heads Are Priced As ASSEMBLED Pairs
| FLOW NUMBERS WITH 4.125" BORE @ 28" WATER | ||||||||||
| LIFT | .100" | .200" | .300" | .400" | .500" | .600" | .700" | .800" | Valve Size | |
| INTAKE | 85 | 171 | 261 | 325 | 361 | 383 | 398 | 403 | 2.200" | |
| EXHAUST | 63 | 117 | 162 | 208 | 246 | 266 | 279 | 285 | 1.615" | |
*Flowed with radius inlet intake/no pipe exhaust
|
Intake Volume (cc) |
285 |
Rocker Config. |
GM LS7 8mm bolts |
|
Exhaust Volume (cc) |
90 |
Intake Port Config. |
LS7 |
|
Valve Guide Material |
Manganese Bronze |
Head Bolts/ Cyl. |
4 |
|
Minimum Bore Size (in) |
4.125" |
Valve Angle (degrees) |
12 |
LME Standard Head Porting Process
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CNC Heads, Parts: CHE Bronze Guides Reuse GM Titanium Intake valves, REV Stainless Severe Duty Exhaust Valves, LME .660" Lift Spring Kit w/ Titanium Retainers
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