Description
These Hi-Performance Heads are modeled after our Stock Dual Port Cylinder Heads (98-1355-B Casting). Made from a Special Aluminum Alloy for strength and rigidity that is repairable. 85.5mm Bore assembled with 35.5 Intake and 32mm Exhaust Seats, Hi-Rev Single Valve Springs, Chromoly Retainers, Hardened Keepers, Stainless Steel Manley Valves, Hi Performance Racing Guides, Rocker, Exhaust and Intake Studs. Complete with a 3-Angle Performance Valve Job. SCORE APPROVED
14 mm 1/2” Spark Plug Holes
- Chamber Volume: 51cc
- Intake Port Volume: 53cc
- Exhaust Port Volume: 56.5cc
Flow @ 25″
.100″ – 49cfm
.200″ – 74.5cfm
.300″ – 106cfm
.400″ – 111cfm
.500″ – 116cfm
.600″ 120cfm
.650″ 122cfm





Reviews
There are no reviews yet.