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Magnuson heartbeat, is new belt required for 3mm smaller pulley?

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Old 10-01-2017, 05:05 AM
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Corvette4ever
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Default Magnuson heartbeat, is new belt required for 3mm smaller pulley?

I am ordering the heartbeat kit for my GS soon. However I am going with a 95mm pulley instead of the standard 98mm

Do you think I can use the supplied belt or do I have to get a new belt?

Thanks
Old 10-05-2017, 12:17 PM
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2highpsi
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Originally Posted by Corvette4ever
I am ordering the heartbeat kit for my GS soon. However I am going with a 95mm pulley instead of the standard 98mm

Do you think I can use the supplied belt or do I have to get a new belt?

Thanks
The C7 Maggie kit ships with a 95mm pulley, only the Camaro is shipped with a 98mm. You won't need to change anything

For future reference you can go down to an 80mm with the same belt.

If memory serves me correctly, you need .5 shorter to go smaller than 80mm and not have any slip.

Mike
Old 10-06-2017, 02:39 PM
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2highpsi
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That info is of course for the newer Maggie C7 LT1 kits with dedicated drive.
Old 10-06-2017, 03:43 PM
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Thanks Mike
Glad I went with Magnuson. I'll post the results in this section hopefully within 1 month

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