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Anyone knows where I can find a chart showing the upper pulley size versus boost on the Magnuson TVS2650 LT1 Supercharger (01-26-62-171-BL)?
For the C7 LT1, the kit comes standard with a 110mm pulley and is rated at 8 PSI. From their website, the 8 Rib two-piece pulleys range from 110mm to 70mm.
Also, does moving to a smaller or larger pulley size require a re-tune?
Thanks to everyone for their input.
As mentioned above the Maggy TVS2650 C7 LT1 kit comes standard with the 110mm upper pulley, and the LT4 kit comes standard with the 90mm pulley.
The updated boost to pulley size numbers should be as follows:
I stumbled upon this excellent chart online, it seems pretty accurate:
Last edited by Bruceham; Apr 17, 2025 at 01:15 PM.
Reason: Accuracy
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Maggy Upper Pulley Size VS Boost Chart
