EXTREME DUTY 23º INV. DOME
These pistons are specially designed for forced induction and nitrous applications. Pistons include .310" pocket depths and precision CNC machined ring grooves that accept 1/16, 1/16, 3/16 rings.
Includes:
Pin #927-2950-15-51S (140g)
Contact reduction grooves
Double Spiro Locks # 927-042-CS
Double Pin Oilers
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350 Series
Std Bore: 4.000
Ring package designed for: 1/16, 1/16, 3/16 Rings
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400 Series
Std Bore: 4.125
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 |
| 58cc |
64cc |
76cc |
| Compression Ratio |
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Dome
Vol. |
Gram
Wt. |
Footnote |
Oversize |
Recom.
Ring Set |
 |
| 232514 |
400 |
4.125 |
3.750 |
5.700 |
9.020 |
1.445 |
8.9 |
8.5 |
7.8 |
-36.0 |
512 |
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STD |
J100F8-4125-5 |
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| 242885 |
400 |
4.125 |
3.750 |
6.000 |
9.000 |
1.125 |
9.6 |
9.1 |
8.5 |
-28.0 |
459 |
B |
STD |
J10008-4125-5 |
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| 232516 |
400 |
4.125 |
3.750 |
6.000 |
9.020 |
1.145 |
9.6 |
9.1 |
8.2 |
-28.0 |
466 |
B |
STD |
J100F8-4125-5 |
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| 131633 |
407 |
4.155 |
3.750 |
5.700 |
9.000 |
1.425 |
9.1 |
8.7 |
7.8 |
-36.0 |
518 |
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0.030 |
J10008-4155-5 |
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| 170818 |
407 |
4.155 |
3.750 |
6.000 |
9.000 |
1.125 |
9.7 |
9.2 |
8.6 |
-28.0 |
476 |
B |
0.030 |
J10008-4155-5 |
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| 194888 |
409 |
4.165 |
3.750 |
6.000 |
9.000 |
1.125 |
9.8 |
9.2 |
8.6 |
-28.0 |
483 |
B |
0.040 |
J10008-4165-5 |
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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.