I recently pulled my starter to rebuild it and was told I needed a new flywheel, as there are sections of teeth that are really worn out. Explains why every once in awhile the starter doesn't engage properly and the starter makes a horrible scream. Of course, this always happens at a car show or cruise night.
Anyway, in my search for a new flywheel, I'm getting conflicting information. My old parts book says part # 3991403. Evidently that is obsolete and I've been quoted part # 340296 and part # 471598.
Some of these are specific for mid-70s corvettes, but are said to work for other late 60's Chevy's.
Anybody have any experience with this, or know of a specific part # that works ?
Are you after only GM, or are you ok with an aftermarket part number? If so, any auto supply store selling ATP can sell you a Z121 that should be identical.
Just make sure you don't get one that is weighted (as in from a 400 small block, or a 454.)
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1966 Strato Chief 2 door, 427 4 speed, 45,000 original miles
1966 Grande Parisienne, 396 1 of 23 factory air cars
I recently pulled my starter to rebuild it and was told I needed a new flywheel, as there are sections of teeth that are really worn out. Explains why every once in awhile the starter doesn't engage properly and the starter makes a horrible scream. Of course, this always happens at a car show or cruise night.
Anyway, in my search for a new flywheel, I'm getting conflicting information. My old parts book says part # 3991403. Evidently that is obsolete and I've been quoted part # 340296 and part # 471598.
Some of these are specific for mid-70s corvettes, but are said to work for other late 60's Chevy's.
Anybody have any experience with this, or know of a specific part # that works ?
Regards, Scott (LandShark ...)
3991403 is superseded by 340296 which in turn changes up to 471598, Available from GM , $120.00, this is for a 1968 396 TH400 Actually fits all TH400 68-69 plus other years 350 etc.
-- Edited by 67custom on Thursday 18th of August 2016 11:25:48 AM
Are you looking for a flywheel for a standard shift car, or a flexplate for an automatic shift car? If a flywheel, I'd suggest going with an aftermarket Hays unit. If a flexplate, any auto parts store should be able to set you up.
Also, what size is it? 153 tooth (12.85" OD), or 168 tooth (14" OD)?
Good points, I assumed original 168 tooth as all big blocks were. No big blocks were made with the small flywheel/flexplate. Also assumed automatic because I remember seeing interior shots of his car with an A/T.
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1966 Strato Chief 2 door, 427 4 speed, 45,000 original miles
1966 Grande Parisienne, 396 1 of 23 factory air cars
It is an automatic and it's the 168 tooth, 14 inch.
Had some luck. The garage I'm getting the work done at, found an aftermarket (TRW) heavy-duty unit and I found a NOS (part # 340296) that will be here next week. Between these 2, I think I'm golden.