Product Description
428 4.1875 Bore, 4.000 Stroke, 6.625 Rod Length, 4032 Forged Piston Set.
Flat Top, 4.1875 Bore, 1.590 CD, 0.980, Pin Dia, Set of 8.
Will work with stock 3.25 inch main 428 crankshaft in a .0675 over 428 block or .0365 over 455 block.
Note: wristpins are standard Pontiac .980 diameter so order standard 6.625 Pontiac rods, not BBC rods with .990 pins.
| Bore (in) | 4.188 |
|---|---|
| Bore (mm) | 106.36 |
| Top Compression Ring Thickness | 0.0640 |
| Second Compression Ring Thickness | 0.0640 |
| Oil Ring Thickness | 0.188 |
| Forging Type | FSR |
| Volume (cc) | -5.00 |
| Series | SRP |
| Piston Head Type | Flat Top |
| Pin Diameter (IN) | 0.980 |
| Compression Height | 1.590 |
| Make | PONTIAC |
| Wrist Pin Style - floating or press fit | Floating |
| Wall Type | STRAIGHT |
| Wall Thickness (IN) | 0.150 |
| Ringset Part Number | J100F8-4185-5 |
| Ring Brand | ProSeal |
| Ringset Included | No |
| Retainer Thickness | 0.042 |
| Retainer Lock Style | Spiro Lock |
| Retainer Lock Part Number | 990-042-CS |
| Retainer Diameter (IN) | 0.990 |
| Replacement Single Piston | 146508S |
| Piston Pin Inside Diameter | 0.680 |
| Piston Pin Material | 5115 LOW CARBON STEEL, CASE HARDENED |
| Piston Material | 4032 |
| Piston Pin Length (IN) | 2.750 |
| Piston Avg Wt | 531 |
| Pin Offset | No |
| Pin Brand | JE Pistons |
| Pin Part Number | 980-2750-15-51S |
| Pin Included | Yes |
| Pin Diameter (mm) | 24.90 |
| Oil Rail Support Included | No |
| Deck Clearance | 0.000 |
| Brand | SRP |
