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This is a GN1Performance "LONG ROD STROKER KIT" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. If your looking to be the bully on the track with your turbo 6, this is the kit for you. This kit comes with a 3.625 stroker crank, 6.350 h beam rods and JE Custom pistons.
KEEP IN MIND THIS IS A 4340 CRANK SHAFT, NOT 4140. THIS 4340 MATERIAL WILL SUPPORT 1000-1200 HP EASILY.
**In some cases, minor machine work may be required depending on your application, by this we mean checking the journal tolerances and rod clearances.
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