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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 #940-2750-16-51S (137g)
Double spiro locks (#927-042-CS)

BUICK GRAND NATIONAL SERIES
Std Bore: 3.800
Ring package designed for: 1/16, 1/16, 3/16 Rings
 Tech and Installation Tips
Part # CID Bore Stroke Rod
Lgth.		 Block
Ht.		 Comp.
Ht.
Head Cubic Centimeters
48cc
Compression Ratio
Dome
Vol.		 Gram
Wt.		 Footnote Oversize Recom.
Ring Set
131556 234 3.820 3.400 5.960 9.510 1.850 Fact. Duplicate 8.5 -29.5 541   0.02 J100F6-3820-5
131557 235 3.830 3.400 5.960 9.510 1.850 Fact. Duplicate 8.5 -29.5 542   0.03 J100F6-3830-5


- Denotes part # has been issued a new part #. A list referencing old part #s to their new counterparts will be available shortly.

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