Enginetech 120900 is a crankshaft kit for 1955-1963 Chevrolet, GMC, Pontiac engines (4.3L/4.6L). Includes matching rod and main bearings. Sold individually (1 kit per order).
Important Notes
- This crankshaft is pre-ground and pre-packaged. The exact journal oversize cannot be confirmed prior to shipment. The correct matching oversized rod and main bearings are always included in the kit.
- Includes bearings. Forging # 3727447, 3734627, 3735236, 3815822, 3836266, 3876764
Product Specifications
| Part Number | 120900 |
| Brand | Enginetech |
| Type | Crankshaft Kit |
| Kit Contents | Crankshaft + matching rod & main bearings |
| Quantity | Sold individually (1 kit per order) |
| Year Range | 1955-1963 |
| Makes | Chevrolet, GMC, Pontiac |
| Engine | 4.3L/4.6L |
| Forging Number | 3727447, 3734627, 3735236, 3815822, 3836266, 3876764 |
| Weight | 52 lbs |
| Country of Origin | US |
| UPC | 707480030403 |
| OEM Cross-References | Crankshaft Rebuilders:12370 |
Vehicle Fitment
- 1955-1956 Chevrolet Corvette 4.3L 265ci V8 OHV
- 1955-1957 Chevrolet Bel Air 4.3L 265ci V8 OHV
- 1955-1957 Chevrolet One-Fifty Series 4.3L 265ci V8 OHV
- 1955-1957 Chevrolet Sedan Delivery 4.3L 265ci V8 OHV
- 1955-1957 Chevrolet Truck 4.3L 265ci V8 OHV
- 1955-1957 Chevrolet Two-Ten Series 4.3L 265ci V8 OHV
- 1957 Chevrolet Del Ray 4.3L 265ci V8 OHV
- 1957 Chevrolet One-Fifty Series 4.6L 283ci V8 OHV
- 1957 Chevrolet Two-Ten Series 4.6L 283ci V8 OHV
- 1957-1958 Chevrolet Del Ray 4.6L 283ci V8 OHV
- 1957-1958 Chevrolet Sedan Delivery 4.6L 283ci V8 OHV
- 1957-1958 Chevrolet Truck 4.6L 283ci V8 OHV
- 1957-1961 Chevrolet Corvette 4.6L 283ci V8 OHV
- 1957-1963 Chevrolet Bel Air 4.6L 283ci V8 OHV
- 1957-1963 Pontiac Laurentian 4.6L 283ci V8 OHV
- 1958 Chevrolet Yeoman 4.6L 283ci V8 OHV
- 1958-1963 Chevrolet Biscayne 4.6L 283ci V8 OHV
- 1958-1963 Chevrolet Impala 4.6L 283ci V8 OHV
- 1959 Chevrolet 3B 4.6L 283ci V8 OHV
- 1959 Chevrolet 3C 4.6L 283ci V8 OHV
- ...and 23 additional applications
Enginetech crankshaft kits include a remanufactured crankshaft along with the matching rod and main bearings for simplified ordering and guaranteed compatibility. Each crankshaft casting is individually inspected and machined on precision equipment to meet OE specifications. Rod and main journals are measured and ground to the appropriate oversize - not to exceed .030 over - and the kit includes the corresponding oversized bearings to match. Because each crankshaft is pre-ground and packaged before the order is placed, the exact journal size cannot be confirmed prior to shipment; the correct matching bearings are always included in the kit. All crankshafts are securely packaged to prevent transit damage and undergo a final engineering inspection before leaving the facility. Always verify the crankshaft part number against your engine's forging number, casting number, VIN code, rear main seal type, and reluctor wheel tooth count before installation - multiple crankshaft configurations exist for many engine families.
WARNING: This product can expose you to chemicals including lead and nickel, which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.
