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72cc Chambers
This will improve reliability
12-point Style
LS9 Head Gaskets
BTR Crankshaft with welded reluctor wheel
JourneyHQ 427 LS Swap Package Performance Engine 72cc ChambersBuilt through a collaboration between Boostline Performance and Journey HQ, this turn key 427 LS package combines our proven Darton sleeved aluminum block with carefully selected components to deliver serious performance and reliability. Featuring a 4. 125" bore and 4. 000" stroke, the 427 is a torque hungry beast that excels in everything from street cars and trucks to dedicated performance builds. The large bore allows for high flow cylinder heads
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