Race/Boost Ported 3100 Cylinder Heads

Product Information

The best flowing heads available for your 3100 engine.  You can spend more, but you won't get more.  Our signature series of heads for those that graduated beyond enthusiast, our race heads start out as hand picked cores, set aside for those that require the absolute best for their ambitions. 

Manley Race Flow Intake and Race Master Exhaust Valves Manley Retainers and Keepers PAC 1518 Springs Modified Spring Pockets to accomodate the springs for .610" lift LS1 seats and matching valve stem seals  Modified/Deshrouded/Polished Combustion Chamber Intake port reshaped and textured for optimal flow Exhaust ports modified/polished	Lift (inch) Race 3100 Intake Race 3100 Exhaust 0.050 35.0 25.2 0.100 65.9 51.8 0.150 94.5 87.6 0.200 124.8 112.6 0.250 152.6 131.2 0.300 177.6 148.1 0.350 194.7 158.4 0.400 211.3 167.1 0.450 224.0 174.0 0.500 235.9 178.8 0.550 240.4 NA 0.600 244.1 NA
Intake port matched, blended, and textured for reduced fuel particle drop-out.  Better efficiency means more power and less gas wasted.	Intake bowl, guide area is modified heavily for flow.  Velocity is not a factor for higher RPM and boosted applications.
Exhaust port is still designed for velocity and flow to keep the exhaust gasses hot.  Improved spool time for turbo, and increased efficiency for NA and supercharged applications	Polished runner and modified exhaust guide area for max flow
Fully deshrouded valves, polished chambers, and high quality Manley stainless valves	These valves will take nitrous and boost applications much better than the stock valves.

You must use the metal lower intake gaskets with these heads, which is recommended for all 3100 engines regardless of application.  These heads are designed for use with the Race/Boost 3100 lower intake.

If you are not using a Comp XFI lobed camshaft, the default springs are not necessary.  Optional LS6 springs for .510" max lift cams, and Comp 26986 springs for nearly all non XFI lobe cams up to .640" lift are available.

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Price: $1399.99

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