Enginetech R38858-040 is a cast .040" oversize piston ring set for 1954-1977 Chevy, GMC, Buick, Oldsmobile 4.6L-5.7L 283-350ci V8 engines, sold as a complete set covering all cylinders.
Important Notes:
- Sized for cylinders bored .040 inch oversize. Verify your finished bore diameter with a precision gauge before ordering - rings sized for the wrong bore will not seal correctly.
- File-fit and gap each ring to the manufacturer's end-gap specification for your application before installation. Improper end gap causes blow-by or ring-end butting under heat.
- Replace piston rings as a complete set during any rebuild. One set covers all cylinders for the engine.
- Cast. 5/64 5/64 3/16.
| Part Number | R38858-040 |
| Grade | Cast |
| Bore Size | .040" Oversize |
| Ring Stack (Top/2nd/Oil) | 5/64 / 5/64 / 3/16 |
| Standard Bore Diameter | 3.875 in |
| Quantity | Complete set - covers all 8 cylinders |
| Engine | 4.6L-5.7L 283-350ci V8 |
| Year Range | 1954-1977 |
| Makes | Buick, Chevrolet, GMC, Oldsmobile, Pontiac |
| Country of Origin | US |
| OEM Cross-Refs | Hastings:660, FEL-PRO:E-245X, Perfect Circle:50076 |
Sold as a complete piston ring set - one set covers all cylinders and is required per engine.
Fitment:
- 1954-1956 Oldsmobile 88 5.3L 324ci V8
- 1954-1956 Oldsmobile 98 5.3L 324ci V8
- 1954-1956 Oldsmobile Deluxe 88 5.3L 324ci V8
- 1954-1956 Oldsmobile Starfire 5.3L 324ci V8
- 1954-1956 Oldsmobile Super 88 5.3L 324ci V8
- 1957-1957 Chevrolet One-Fifty Series 4.6L 283ci V8
- 1957-1957 Chevrolet Two-Ten Series 4.6L 283ci V8
- 1957-1958 Chevrolet Del Ray 4.6L 283ci V8
- 1957-1958 Chevrolet Sedan Delivery 4.6L 283ci V8
- 1957-1958 Chevrolet Truck 4.6L 283ci V8
- 1957-1961 Chevrolet Corvette 4.6L 283ci V8
- 1957-1967 Chevrolet Bel Air 4.6L 283ci V8
- 1957-1967 Pontiac Laurentian 4.6L 283ci V8
- 1958-1958 Chevrolet Yeoman 4.6L 283ci V8
- 1958-1967 Chevrolet Biscayne 4.6L 283ci V8
- 1958-1967 Chevrolet Impala 4.6L 283ci V8
- 1959-1959 Chevrolet 3B 4.6L 283ci V8
- 1959-1959 Chevrolet 3C 4.6L 283ci V8
- 1959-1959 Chevrolet 3D 4.6L 283ci V8
- 1959-1959 Chevrolet 3E 4.6L 283ci V8
- 1959-1959 Chevrolet 3F 4.6L 283ci V8
- 1959-1959 Chevrolet 3G 4.6L 283ci V8
- 1959-1960 Chevrolet El Camino 4.6L 283ci V8
- 1959-1961 Chevrolet Brookwood 4.6L 283ci V8
- 1959-1961 Chevrolet Kingswood 4.6L 283ci V8
- 1959-1961 Chevrolet Parkwood 4.6L 283ci V8
- 1960-1960 GMC Truck 4.6L 283ci V8
- 1960-1962 Chevrolet C40 4.6L 283ci V8
- 1960-1963 GMC 1000 Series 4.6L 283ci V8
- 1960-1963 GMC 1500 Series 4.6L 283ci V8
- ...and 273 additional applications
Enginetech piston ring sets are manufactured to OEM specifications and offered in both premium and cast grades to match the demands of stock rebuilds and moderate-performance builds. Each set is application-specific, with ring widths and end-gap characteristics matched to the bore and groove geometry of the engine family it serves. Ring sets are sold by bore size - standard for unmachined bores, with oversizes for blocks that have been bored and honed - so verify your finished bore diameter with a precision gauge before ordering, since rings sized for the wrong bore will not seal correctly. Always file-fit and gap each ring to the manufacturer's specification for your application, and replace rings as a complete set during any rebuild. Enginetech documents every set with the ring stack dimensions, bore size, and cross-references so the correct set reaches the bench the first time.
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.
