ConcoursMustang Forums

Restoring - General discussions that span across many different groups of years and models => Drivetrain => Topic started by: ruppstang on November 27, 2019, 02:55:23 PM

Title: Fly wheel identification
Post by: ruppstang 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?

Title: Re: Fly wheel identification
Post by: preaction 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.

Title: Re: Fly wheel identification
Post by: ruppstang on November 27, 2019, 08:58:07 PM

Quote from: preaction 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.

Thanks.
I thought someone here would know.