Empi GTV2 90.5/92mm 40x35 Big Valve Cylinder Head - 98-1333-B

Empi 98-1333-B GTV-2 performance cylinder head for 90.5mm or 92mm bore Type 1 engines. Features 40mm x 35.5mm stainless steel valves, single hi-rev valve springs, 20 percent larger intake and exhaust ports, and additional material around combustion chamber and ports for larger custom porting and combustion chamber flycutting.

The GTV-2 cylinder heads are a big valve head with performance valve job, and a premium casting for high performance builds.

Specs:
Competition valve job
Cut for 90.5mm and 92mm piston/cylinders
Combustion chamber 56cc
Intake port 56cc
Exhaust port 66.5cc
Spark plug hole 12mm 3/4in reach
Single hi-rev springs
Chromoly retainers
Hardened valve stem keepers
Manley stainless 3-groove valves 40mm x 35.5mm
Intake, exhaust, and rocker studs included

Head flow at approximately 25inHg:
0.100in = 55cfm
0.200in = 87cfm
0.300in = 113cfm
0.400in = 130cfm
0.500in = 137cfm
0.600in = 141cfm

Empi 98-1333-B

SKU	EMP-98-1333-B