Product Description
Manley Extreme Duty Pistons - 4.065" / -20cc Dish / 4.000" Stroke - LT1 / LT4
PLATINUM SERIES LIGHTWEIGHT PISTONS - learn more about pistons
DIRECT INJECTED LT1/LT4 FOR 3.622" AND 4.000" STROKES
Manley pistons are machined of high strength 2618 material. Each design is lightweight yet robust enough to deliver long service life. Perfect ring groove to skirt squareness is achieved through our unique "one fixturing" manufacturing method that assures maximum horsepower. We utilize a proven offset wrist pin design, a 1.2, 1.2, 3mm Total Seal ring package and moly coated skirts for ultimate performance. Roundwire locks and pressure balance grooves are included with every set at no additional charge. Note: Compression ratios are calculated at 0.00" deck clearance, a 9.240" deck height, 60cc combustion chamber, and a .051" thick compressed head gasket. 9310 alloy pin (Extreme Duty Series) included: P/N 42542 2.300" x .210" wall (4.065"-4.080" bores) and P/N 42528 2.500" x .210" wall (4.125"-4.130" bores)
Premium Chrome Moly wrist pins are included with the Standard Series and 9310 Alloy wrist pins are included with the Extreme Duty Series.
| Piston Ring Sets | ||||||||||
| Standard Part No. | Extreme Duty Part No. | Bore Size | Over Size | Rod Length | Stroke | Comp Distance | Comp Ratio | Piston Wt/Gms | Ductile Iron Top Rings | Premium Steel Top Rings |
 | ||||||||||
| STOCK STROKE -2cc DOME | LT1/LT4 | |||||||||
| ||||||||||
| 560065C-8 | 560065CE-8 | 4.065" | STD | 6.125" | 3.622" | 1.304" | 11.7 / 10.8 | 498 | 46016-8 | 46016ST-8 |
| ||||||||||
| 560070C-8 | 560070CE-8 | 4.070" | +.005" | 6.125" | 3.622" | 1.304" | 11.7 / 10.8 | 500 | 46017-8 | 46017ST-8 |
| ||||||||||
| 560075C-8 | 560075CE-8 | 4.075" | +.010" | 6.125" | 3.622" | 1.304" | 11.8 / 10.9 | 502 | 46017-8 | 46017ST-8 |
| ||||||||||
| 560080C-8 | 560080CE-8 | 4.080" | +.015" | 6.125" | 3.622" | 1.304" | 11.8 / 10.9 | 504 | 46018-8 | 46018ST-8 |
| ||||||||||
| STOCK STROKE -12cc DISH | ||||||||||
| ||||||||||
| 560165C-8 | 560165CE-8 | 4.065" | STD | 6.125" | 3.622" | 1.304" | 10.5 / 9.7 | 469 | 46016-8 | 46016ST-8 |
| ||||||||||
| 560170C-8 | 560170CE-8 | 4.070" | +.005" | 6.125" | 3.622" | 1.304" | 10.5 / 9.7 | 471 | 46017-8 | 46017ST-8 |
| ||||||||||
| 560175C-8 | 560175CE-8 | 4.075" | +.010" | 6.125" | 3.622" | 1.304" | 10.6 / 9.8 | 472 | 46017-8 | 46017ST-8 |
| ||||||||||
| 560180C-8 | 560180CE-8 | 4.080" | +.015" | 6.125" | 3.622" | 1.304" | 10.6 / 9.8 | 473 | 46018-8 | 46018ST-8 |
| ||||||||||
| STROKER SERIES -10cc DISH | ||||||||||
| ||||||||||
| 560265C-8 | 560265CE-8 | 4.065" | STD | 6.125" | 4.000" | 1.115" | 11.7 / 10.8 | 439 | 46016-8 | 46016ST-8 |
| ||||||||||
| 560270C-8 | 560270CE-8 | 4.070" | +.005" | 6.125" | 4.000" | 1.115" | 11.7 / 10.8 | 442 | 46017-8 | 46017ST-8 |
| ||||||||||
| 560275C-8 | 560275CE-8 | 4.075" | +.010" | 6.125" | 4.000" | 1.115" | 11.8 / 10.9 | 445 | 46017-8 | 46017ST-8 |
| ||||||||||
| 560280C-8 | 560280CE-8 | 4.080" | +.015" | 6.125" | 4.000" | 1.115" | 11.8 / 10.9 | 446 | 46018-8 | 46018ST-8 |
| ||||||||||
| 560300C-8 | 560300CE-8 | 4.125" | +.060" | 6.125" | 4.000" | 1.115" | 12.0 / 11.1 | 471 | 46060-8 | 46060ST-8 |
| ||||||||||
| 560305C-8 | 560305CE-8 | 4.130" | +.065" | 6.125" | 4.000" | 1.115" | 12.0 / 11.1 | 473 | 46061-8 | 46061ST-8 |
| ||||||||||
| 560310C-8 | 560310CE-8 | 4.135" | +.070" | 6.125" | 4.000" | 1.115" | 12.0 / 11.1 | 475 | 46062-8 | 46062ST-8 |
| ||||||||||
| STROKER SERIES -20cc DISH | ||||||||||
| ||||||||||
| 560465C-8 | 560465CE-8 | 4.065" | STD | 6.125" | 4.000" | 1.115" | 10.5 / 9.8 | 414 | 46016-8 | 46016ST-8 |
| ||||||||||
| 560470C-8 | 560470CE-8 | 4.070" | +.005" | 6.125" | 4.000" | 1.115" | 10.5 / 9.8 | 415 | 46017-8 | 46017ST-8 |
| ||||||||||
| 560475C-8 | 560475CE-8 | 4.075" | +.010" | 6.125" | 4.000" | 1.115" | 10.6 / 9.9 | 418 | 46017-8 | 46017ST-8 |
| ||||||||||
| 560480C-8 | 560480CE-8 | 4.080" | +.015" | 6.125" | 4.000" | 1.115" | 10.6 / 9.9 | 419 | 46018-8 | 46018ST-8 |
| ||||||||||
| 560500C-8 | 560500CE-8 | 4.125" | +.060" | 6.125" | 4.000" | 1.115" | 10.8 / 10.1 | 445 | 46060-8 | 46060ST-8 |
| ||||||||||
| 560505C-8 | 560505CE-8 | 4.130" | +.065" | 6.125" | 4.000" | 1.115" | 10.8 / 10.1 | 447 | 46061-8 | 46061ST-8 |
| ||||||||||
| 560510C-8 | 560510CE-8 | 4.135" | +.070" | 6.125" | 4.000" | 1.115" | 10.9 / 10.1 | 449 | 46062-8 | 46062ST-8 |
