350 / 400 SMALL BLOCK DOME PROFESSIONAL SERIES
PISTON DESIGN
- Advanced, lightweight FSR forging that eliminates stress concentrations for superior strength
- Up to 20% lighter than traditional equivalent
- High-silicon 4032 aluminum alloy for reduced piston-to-wall clearance and quiet operation
- Accumulator grooves for improved ring seal
- Designed for normally aspirated or moderate forced induction/nitrous applications
- Now includes high performance skirt coating!
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RINGS INCLUDED
- Lightweight, low friction metric ring package included
- 1.2mm top ring, 1.5mm Napier 2nd ring, 3.0mm standard tension oil ring
- Napier 2nd ring for improved oil control
- Minimal filing required
PINS AND LOCKS
- High quality 2.250" pin further reduces reciprocating weight
- Carbon steel wire locks included
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350 SMALL BLOCK DOME PROFESSIONAL SERIES
Std Bore: 4.000
Ring package: 1.2mm, 1.5mm, 3.0mm Premium Rings Included
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400 SMALL BLOCK DOME PROFESSIONAL SERIES
Std Bore: 4.125
Ring package: 1.2mm, 1.5mm, 3.0mm Premium Rings Included
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| Part # |
CID |
Bore |
Stroke |
Rod
Lgth. |
Block
Ht. |
Comp.
Ht. |
| Head Cubic Centimeters |
| 58cc |
64cc |
70cc |
| Compression Ratio |
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Dome
Vol. |
Gram
Wt. |
Footnote |
Oversize |
Recom.
Ring Set |
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| 271066 |
406 |
4.155 |
3.750 |
6.000 |
9.000 |
1.125 |
14.1 |
13.0 |
12.0 |
4 |
424 |
B |
0.030 |
JG31F8-4155-3 |
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| 271066 |
377 |
4.155 |
3.480 |
6.125 |
8.990 |
1.125 |
13.2 |
12.1 |
11.2 |
4 |
424 |
A,B |
0.030 |
JG31F8-4155-3 |
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- Denotes part # has been issued a new part #. A list referencing old part #s to their new counterparts will be available shortly.