Buick Grand National

The overwhelming choice of the world’s fastest Buick engine builders. These pistons are engineered to produce maximum horsepower in extreme boost or nitrous applications. The inverted dome is designed to duplicate the factory compression ratio and the precision CNC machined ring grooves accept 1/16, 1/16, 3/16 rings.

Includes:

  • Pin #940-2750
  • Double spiro locks (#927-042-CS)
Part # Brand Bore Stroke Rod Deck Head CC Comp. Ratio Comp. Height Crown Vol. Ring Set Head Type Stock Action
312983 JE Pistons 3.815 3.400 5.960 9.510 48.0 8.5 1.850 -28.90 J10006-3810-5 Inv Dome/Dish Back Order
131556 JE Pistons 3.820 3.400 5.960 9.510 48.0 8.5 1.850 -29.50 J100F6-3820-5 Inv Dome/Dish In stock
338260 JE Pistons 3.840 3.400 5.960 9.510 48.0 8.5 1.850 -29.50 J100F6-3840-5 Inv Dome/Dish Back Order
312982 JE Pistons 3.810 3.400 5.960 9.510 48.0 8.5 1.850 -28.60 J10006-3810-5 Inv Dome/Dish In stock
131557 JE Pistons 3.830 3.400 5.960 9.510 48.0 8.5 1.850 -29.50 J100F6-3830-5 Inv Dome/Dish In stock