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Big 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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70030005 |
1.949 |
0.90 |
2.00 |
0.475 |
none |
274/278 |
110/110 |
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70032009 |
1.949 |
0.95 |
2.00 |
0.450 |
none |
264/268 |
110/110 |
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70034013 |
1.949 |
1.00 |
2.00 |
0.425 |
none |
268/276 |
110/110 |
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Big 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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75031003* |
2.125 |
1.26 |
2.20 |
0.385 |
1.565 |
256/260 |
110/110 |
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* Drive sprocket bolt circle is 1.160 |
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75032007 |
2.125 |
1.26 |
2.20 |
0.385 |
1.950 |
256/260 |
110/110 |
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75034011 |
1.949 |
1.00 |
2.00 |
0.425 |
1.565 |
268/276 |
110/110 |
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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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