396, 427, 454 CLOSED CHAMBER
New high compression dome Piston Designed specifically for closed chamber cylinder heads. Precision CNC machined ring grooves accept 1/16, 1/16, 3/16 rings.
Includes:
Pin #990-2930-15-51S (150g)
Double spiro locks (#990-042-CS)
Forced pin oiler, with annular oil reservoir
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396, 427, 454 CLOSED CHAMBER DOME
Std Bore: 4.250 *
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 |
| 101cc |
107cc |
109cc |
| Compression Ratio |
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Dome
Vol. |
Gram
Wt. |
Footnote |
Oversize |
Recom.
Ring Set |
 |
| 258204 |
460 |
4.280 |
4.000 |
6.135 |
9.783 |
1.648 |
13.5 |
12.5 |
12.1 |
33.0 |
645 |
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0.030 |
J100F8-4280-5 |
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| 258205 |
466 |
4.310 |
4.000 |
6.135 |
9.783 |
1.648 |
13.4 |
12.4 |
12.0 |
33.0 |
658 |
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0.060 |
J100F8-4310-5 |
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| 258203 |
502 |
4.467 |
4.000 |
6.135 |
9.780 |
1.645 |
9.7 |
9.1 |
8.8 |
2.0 |
650 |
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0.000 |
J100S8-4470-5 |
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| 258206 |
402 |
4.125 |
3.760 |
6.135 |
9.780 |
1.765 |
13.5 |
12.5 |
12.1 |
44.0 |
CALL |
M * |
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J100F8-4125-5 |
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| 258207 |
409 |
4.155 |
3.760 |
6.135 |
9.780 |
1.765 |
13.5 |
12.5 |
12.1 |
44.0 |
649 |
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J100F8-4155-5 |
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| 258208 |
433 |
4.280 |
3.760 |
6.135 |
9.780 |
1.765 |
13.5 |
12.5 |
12.1 |
39.0 |
687 |
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0.030 |
J100F8-4280-5 |
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| 258209 |
439 |
4.310 |
3.760 |
6.135 |
9.780 |
1.765 |
13.4 |
12.4 |
12.0 |
39.0 |
695 |
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0.060 |
J100F8-4310-5 |
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Tech and Installation Tips
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Valve Relief Diagram
- Denotes part # has been issued a new part #. A list referencing old part #s to their new counterparts will be available shortly.