Author Topic: Fly wheel identification  (Read 916 times)

Offline ruppstang

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Fly wheel identification
« on: November 27, 2019, 02:55:23 PM »
I have a 184 tooth fly wheel drilled for a 11.5 inch pressure plate. It is for a 1968  390GT. Is there any way visually to determine if it is a neutral  balance fly wheel?

Offline preaction

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Re: Fly wheel identification
« Reply #1 on: November 27, 2019, 06:02:55 PM »
Marty, from what you wrote it should be neutral like a 427 also look on the back (engine side) and there should equal and concentric cuts or machining on the flywheel a 428 (externally balanced) would have  a raised section about 3" wide in a pie shape and about  1/4" to 3/8' thick.
« Last Edit: November 27, 2019, 06:09:25 PM by preaction »
8F02R218047-  July 18 1968   Dearborn

Offline ruppstang

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Re: Fly wheel identification
« Reply #2 on: November 27, 2019, 08:58:07 PM »
Marty, from what you wrote it should be neutral like a 427 also look on the back (engine side) and there should equal and concentric cuts or machining on the flywheel a 428 (externally balanced) would have  a raised section about 3" wide in a pie shape and about  1/4" to 3/8' thick.

Thanks.
I thought someone here would know.