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Indian Chief, Scout & 741 Engine Data |
Motor | Bore | Stroke | Rod length | Rod ratio | Size | -1/3 | Class |
741 | 2.500 | 3.0625 | 7.2830 | 2.378:1 | 30.07” | 493cc | 329cc | 350 |
741 bored (70mm, H-D 45) | 2.750 | 36.38” | 596cc | 397cc | 500 |
741 bored, Scout wheels | 3.5000 | 7.4020 | 2.115:1 | 41.58” | 681cc | 454cc | 500 |
741 bored, 45 wheels | 3.8125 | 7.4375 | 1.951:1 | 45.29” | 742cc | 495cc | 500 |
741 bored, Chief 74 wheels | 4.4375 | 7.4020 | 1.668:1 | 52.72” | 864cc | 576cc | 650 |
Scout | 2.875 | 3.5000 | 2.115:1 | 45.45” | 745cc | 497cc | 500 |
Scout, 45 wheels & rods | 3.8125 | 7.4375 | 1.951:1 | 49.50” | 811cc | 541cc | 650 |
Scout, Chief 74 wheels | 4.4375 | 7.4020 | 1.668:1 | 57.62” | 944cc | 629cc | 650 |
Scout, Chief 80 wheels | 4.8125 | 1.538:1 | 62.49” | 1024cc | 683cc | 750 |
Scout 57”, T&O + XL rods | 4.4020 | 7.4375 | 1.690:1 | 57.16” | 937cc | 625cc | 650 |
Chief de-stroked | 3.250 | 4.0000 | 8.1400 | 2.035:1 | 66.37” | 1088cc | 725cc | 750 |
Chief 74 | 4.4375 | 1.834:1 | 73.63” | 1207cc | 805cc | 1000 |
Chief 80 | 4.8125 | 1.691:1 | 79.85” | 1309cc | 873cc | 1000 |
Chief stroker | 4.8750 | 1.670:1 | 80.89” | 1326cc | 884cc | 1000 |
Chief 84 stroker | 5.0000 | 1.628:1 | 82.96” | 1359cc | 906cc | 1000 |
Chief 86 stroker | 5.1250 | 1.588:1 | 85.04” | 1394cc | 929cc | 1000 |
Chief 88 stroker | 5.2500 | 1.550:1 | 87.11” | 1427cc | 951cc | 1000 |
Click here for Harley-Davidson stroker flywheels |
Knuckle, Panhead
1941-54 |
Pan, Shovelhead
1955-71 |
Shovelhead
1972-81 |
45 WL, trike
1937-73 |
74, 80” Flathead
1937-48 |
Sportster
1957-* |
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