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SD5880-1 - LS3 CNC ported cylinder head assembled with LS3 valves and PAC1218 springs.

Fully assembled CNC ported LS3 heads with upgraded valve springs with cam shafts that provide over 0.570" lift and up to 0.600". The unique 2.165" Hollow Stem intake valve from GM is an excellent performance valve!To properly maintain valvetrain stability for maximum performance, the engineers at GM have determined that a lightweight intake valve is necessary for todays camshaft lobe designs and high RPM requirements. This is an excellent bolt-on upgrade for the LS3 engine or any LSX performance engine needing increased airflow and more horsepower. The PAC #1218 valve spring provides for additional lift and increased spring pressure to handle aggressive camshafts. The cost of the cylinder head kit is $1500.00 plus shipping in the 48 states. The cylinder head kit comes with GM rocker arms and rocker stands. This sale is good untill Sept. 5th.

Valve Sizes - Intake 2.165" : Exhaust 1.590"

Flow Chart
Flowed @ 28” H2O on a 4.155” Bore

Lift Intake Flow Exhaust Flow

.100" 069 cfm 046 cfm
.200" 154 cfm 115 cfm
.300" 225 cfm 178 cfm
.400" 280 cfm 201 cfm
.500" 324 cfm 217 cfm
.600" 350 cfm 230 cfm
.700" 358 cfm 236 cfm

Available on line at SDPC
http://sdparts.com/details/scoggin-d...enter/sd5880-1