- Hypereutectic.
- 3.140" diameter recess .070" deep.
- 4 valve reliefs.
- Use 1986 & earlier rings.
- *Same as 3490H with coated skirts.
Application Summary:
| Year | Make/Model |
|---|---|
| 1996-2005 | Chevrolet Astro |
| 1995-2005 | Chevrolet Blazer |
| 1996-2002 | Chevrolet Express 1500 |
| 1995 | Chevrolet P30 |
| 1995-1996 | Chevrolet S10 |
| 2004 | Chevrolet S10 |
| 2005-2006 | Chevrolet Silverado 1500 |
| 2007 | Chevrolet Silverado 1500 Classic |
| 1998 | GMC C1500 |
| 1995-2001 | GMC Jimmy |
| 1995 | GMC P3500 |
| 1996-2005 | GMC Safari |
| 1996-2002 | GMC Savana 1500 |
| 2005-2006 | GMC Sierra 1500 |
| 2007 | GMC Sierra 1500 Classic |
| 1995-1997 | GMC Sonoma |
| 2004 | GMC Sonoma |
| 1996-2001 | Oldsmobile Bravada |
| Attributes | |
| Base Number | 3490HC |
| Bore (in) | 4 |
| Bore (mm) | 101.6 |
| Bore Diameter | 4 |
| Compression Ratio | 8.8, 9.4 |
| Country of Origin (Primary) | MX |
| Crown Type | DISH |
| Eng. Disp Liters | 4.3 |
| Eng. Disp. In. | 262 |
| Eng. Disp. Liters | 4.3 |
| Engine Family | GM V6 |
| Engine Manufacturer | Chevrolet |
| Hazardous Material Code | N |
| Life Cycle Status Code | Available to Order |
| Oe Assembly | 3991488, 6271097, 14077448, 10159424, 10049073, 12509282, 10049079, 10049076, 12514101, 125420264 |
| Oil Ring Thickness | 0.1875 |
| Oversize | .020 |
| Oversized | Yes |
| Oversizes | STD .020 .030 .040 .060 |
| Pin Configuration | Offset |
| Pin Number | 0927x300A |
| PIN TYPE | Press |
| Piston Head Type | Dish |
| Piston Material | Cast 390 Hypereutectic Alloy |
| Piston Pin Outside Diameter | .927 |
| Ring Pack | 5/64, 5/64, 3/16 |
| Second Compression Ring Thickness | 0.0781 |
| Sold As | Complete Piston Set |
| Top Compression Ring Thickness | 0.0781 |
| Top Land | .250 |
| Vin Code | W, Z |
| Year From | 1985 |
| Year Range | 1985-1995 |
| Year To | 1995 |
| GTIN | 00800745096951 |