PY Online Forums - Bringing the Pontiac Hobby Together - MSD Trigger wheel pilot hole diameter?

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73LeMans

09-25-2020 11:23 AM

MSD Trigger wheel pilot hole diameter?

Anyone know the diameter of the pilot hole in the middle of the #8650 7" trigger wheel? Curious if it will over my old Fluidamper register that sits @ 2.46". Looks like it should. I know it uses bolts to secure, just curious if it will need to be machined to rest flat.

73LeMans

09-25-2020 03:30 PM

Called MSD/Holley Support - it wont fit. I'm far from surprised. Diameter is 1.82" according to Tech Support. Id have to machine off an awful lot for it to fit and center on the register.

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