4.250 +.060", .490" Hemi Dome -80cc w/2V,Top Ring:5/64", 2nd Ring: 5/64", Oil Ring: 3/16", Comp Ratios: 9.6w/168cc,9.2w/174cc,Gram weight 809/161, INT-Valve Depth/DIA Hemi 2.370", EX-Relief Depth/Dia Flat@23 deg
KB Series Hypereutectic 390 Alloy with 16% Silicon is a High Performance Piston for Marine, Drag, Circle Track and Towng. Fully machined head and valve reliefs. Mini Grooves to reduce scuffing if overheated. Accumulator Grove aids with compression ring seal. Triple Spiral Lock Rings. Machined in Oil Returns. CNC machined pin bores produce straight and accurately sized bores. Diamond finished skirts.
KB Series Hypereutectic 390 Alloy with 16% Silicon is a High Performance Piston for Marine, Drag, Circle Track and Towng. Fully machined head and valve reliefs. Mini Grooves to reduce scuffing if overheated. Accumulator Grove aids with compression ring seal. Triple Spiral Lock Rings. Machined in Oil Returns. CNC machined pin bores produce straight and accurately sized bores. Diamond finished skirts.
- Bore: 4.250 +.060"
- Stroke: 3.750 Comp HT: 1.949
- O.E Deck HT: 10.725
- Lock Ring:PRH113-3
- .490" Hemi Dome -80cc w/2 Valve Reliefs
- Centered pin.
- Compression ratio calculated usring gasket thickness .020 and -.041 deck clearance, gasket bore of 4.365 and unmodified block
- Pin Size: 1.0300/ Pin# 1.031X300K
- Ring Set: 4250AM8
| Attributes | |
| Alloy | 390 |
| Base Number | KB210 |
| Bore (in) | 4.25 |
| Bore (mm) | 108.0 |
| Compression Ratio | 168-9.6, 174-9.2 |
| Country of Origin (Primary) | MX |
| Crown (cc) | -80cc |
| Crown Type | .490" DOME HEMI -80cc 2V |
| Eng. Disp Liters | 7.0 |
| Eng. Disp. In. | 426 |
| Engine Family | Mopar Hemi (early) |
| Engine Manufacturer | Chrysler |
| Exhaust Valve Depth/diameter | Flat @ 23 deg |
| GTIN | 00800745055804 |
| Hazardous Material Code | N |
| Intake Valve Depth/diameter | Hemi 2.370 |
| Life Cycle Status Code | Available to Order |
| Lock | PRH113-3 |
| Make For Engine Family | Mopar |
| Oe Deck Height | 10.725 |
| Oversize | .060 |
| Oversizes | STD .005 .010 .020 .030 .040 .060 |
| Pin Configuration | Centered |
| Pin Diameter (in) | 1.03 |
| Pin Diameter (mm) | 26.2 |
| Pin Number | 1.031x300K |
| Pin Type | Press or Floating |
| Ring Pack | 5/64, 5/64, 3/16 |
| Rod (in) | 6.86 |
| Rod (mm) | 174.244 |
| Sold as | PISTON SET |
| Stroke (in) | 3.75 |
| Stroke (mm) | 95.3 |
| Top Land | .437 |
| Year From | 1963 |
| Year Range | 1963-1974 |
| Year To | 1974 |
KB Hypereutectic Pistons KB210.060 KB Hyper Piston - Chry Hemi 426, Rod 6.860, -80cc 2V
Product Information
- Brand: KB Hypereutectic Pistons
- Product Number: KB210.060