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)
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BUICK GRAND NATIONAL SERIES
Std Bore: 3.800
Ring package designed for: 1/16, 1/16, 3/16 Rings
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| Part # |
CID |
Bore |
Stroke |
Rod
Lgth. |
Block
Ht. |
Comp.
Ht. |
| Head Cubic Centimeters |
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48cc |
| Compression Ratio |
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Dome
Vol. |
Gram
Wt. |
Footnote |
Oversize |
Recom.
Ring Set |
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| 131556 |
234 |
3.820 |
3.400 |
5.960 |
9.510 |
1.850 |
Fact. Duplicate |
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8.5 |
-29.5 |
541 |
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0.020 |
J100F6-3820-5 |
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| 131557 |
235 |
3.830 |
3.400 |
5.960 |
9.510 |
1.850 |
Fact. Duplicate |
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8.5 |
-29.5 |
542 |
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0.030 |
J100F6-3830-5 |
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Tech and Installation Tips
- Denotes part # has been issued a new part #. A list referencing old part #s to their new counterparts will be available shortly.