This is a GN1Performance "STOCK STROKE KIT" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. This kit comes with a 3.400 stock stroke crank, 5.970 h beam rods, and JE pistons. This kit is the the ultimate rebuild kit on the market for your buick 3.8 turbo.
*When building an engine of this nature we HIGHLY recommend you install the 2 Billet Center Main Caps, ARP Main Studs, ARP Head Studs, and a set of Cometic Head Gaskets. These items will ensure you are assembling a bulletproof bottom end.