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Small Block GM Roller Follower Cam Cores (No shoulder step) |
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Part# |
Brg. D. |
Shaft D. |
Lobe D. |
Max Lift |
Step D. |
Dur@.05 |
Lobe C.L. |
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50012003 |
1.869 |
1.02 |
1.92 |
0.375 |
none |
264/274 |
106/106 |
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50014007 |
1.869 |
1.07 |
1.92 |
0.350 |
none |
260/270 |
107/107 |
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50016012 |
1.869 |
1.12 |
1.92 |
0.325 |
none |
256/266 |
107/107 |
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50018016* |
1.869 |
0.85 |
1.92 |
0.480 |
none |
268/276 |
110/110 |
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*rear accessory drive (9/16 x 18) included; no fuel pump eccentric. |
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50018414* |
1.869 |
0.86 |
1.92 |
0.480 |
none |
268/276 |
110/110 |
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*rear accessory drive (9/16 x 18) included; with fuel pump eccentric. |
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50020024 |
1.869 |
0.90 |
1.92 |
0.430 |
none |
274/278 |
109/109 |
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Small Block GM Roller Follower Cam Cores (with shoulder step) |
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Part# |
Brg. D. |
Shaft D. |
Lobe D. |
Max Lift |
Step D. |
Dur@.05 |
Lobe C.L. |
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55013004 |
1.949 |
0.950 |
2.000 |
0.445 |
1.869 |
274/278 |
108/108 |
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55017008 |
1.969 |
0.950 |
2.000 |
0.460 |
1.869 |
274/278 |
108/108 |
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55017512 |
1.969 |
1.055 |
2.000 |
0.402 |
1.869 |
264/268 |
107/107 |
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55019316* |
1.969 |
1.060 |
2.000 |
0.400 |
1.869 |
264/268 |
107/107 |
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*9310 steel |
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55019020* |
1.875 |
0.860 |
1.920 |
0.455 |
1.869 |
274/278 |
109/109 |
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*rear accessory drive (9/16 x 18) included; no fuel pump eccentric. |
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55019414 |
1.875 |
0.860 |
1.920 |
0.455 |
1.869 |
274/278 |
109/109 |
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*rear accessory drive (9/16 x 18) included; with fuel pump eccentric. |
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55020019 |
1.969 |
1.000 |
2.000 |
0.425 |
1.869 |
274/278 |
109/109 |
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Notes on cam grinding: |
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For carburized cam cores with .120 case depth, maximum cam lifts can be
varied |
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+/- .030; durations can be changed +/- 12 cam degrees ... depending on the
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specific cam lobe shape to be ground onto a given lobe. Cam blanks with
durations |
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and lifts not listed here can be made up to order. |
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Camshaft cores can be supplied after any stage of completion: as bar stock
slugs, turned spools, |
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with gear teeth, heat treating, bearing grinding and also complete with
finished ground cam lobes. |
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Special cam blanks (reverse rotation, 180 firing order, etc.) can be
quoted as custom items. |
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Call for pricing and delivery information. |
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