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Big Block Cadillacs
Flywheels/flexplates
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<blockquote data-quote="5one9" data-source="post: 204491" data-attributes="member: 4946"><p>I have a nice stock 500 plate. It measures perfectly in between 13-7/8" and 13-15/16". The conversion would be 13.90625".</p><p></p><p>The PRW plate that is SFI approved on the car is at least 1/16" larger although I never laid a tape measure on it. I did lay the two on top of each other and noticed the difference. The stocker got full tooth pattern contact when engaged and required the high torque mini starter to be shimmed about 0.035". The PRW requires about 0.050" shims but it only gets about 2/3 of the tooth contact on the flywheel.</p><p></p><p>They are definitely different. When I pull the engine out (again) this fall to fix the rear main leak that won't go away, I'll probably put the stock plate back on it.</p></blockquote><p></p>
[QUOTE="5one9, post: 204491, member: 4946"] I have a nice stock 500 plate. It measures perfectly in between 13-7/8" and 13-15/16". The conversion would be 13.90625". The PRW plate that is SFI approved on the car is at least 1/16" larger although I never laid a tape measure on it. I did lay the two on top of each other and noticed the difference. The stocker got full tooth pattern contact when engaged and required the high torque mini starter to be shimmed about 0.035". The PRW requires about 0.050" shims but it only gets about 2/3 of the tooth contact on the flywheel. They are definitely different. When I pull the engine out (again) this fall to fix the rear main leak that won't go away, I'll probably put the stock plate back on it. [/QUOTE]
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