4340 Steel 3.400 Stock Stroke Crankshaft This is a GN1Performance "STOCK STROKE STEEL CRANK 3.400 " for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6.Crank weight is 43lbs!KEEP IN MIND THIS IS A 4340 CRANK SHAFT, NOT 4140. THIS 4340 MATERIAL WILL... MSRP: Was: Now: $799.00 Choose Options
4340 Steel 3.625 Stroker Crankshaft This is a GN1Performance "STEEL 3.625 STROKER CRANK" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. This is a narrow journal width crank.Crank weight is 43lbs!KEEP IN MIND THIS IS A 4340 CRANK SHAFT, NOT... MSRP: Was: Now: $799.00 Choose Options
ATI Super Damper Harmonic Damper This is a "ATI Super Damper Serpentine Series Harmonic Balancer" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX. ATI Super Damper Serpentine Series harmonic balancers are patented and feature grooves for serpentine belts machined into... MSRP: Was: Now: $629.00 Choose Options
