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hamjet · 11-23-2015, 09:06 AM

The 305, 86 and up had 1 piece rear main seal. it used an externally balanced flex plate, can't use it on the 83 350 which was 2 piece rear seal, which used a flex plate with no weights. flexplates aren't expensive,($35.00).. just get the right diameter one to fit the starter, 153 or 168 tooth.. BUT, first you have to know if you have a 1 or 2 piece rear main seal.. Boy Markdtn, I have to learn how to type faster, LOL

11-23-2015, 09:06 AM	#21
hamjet Registered User Join Date: Apr 2013 Location: South Westerlo, New York Posts: 1,325	Re: 350 flexplate on a 307? The 305, 86 and up had 1 piece rear main seal. it used an externally balanced flex plate, can't use it on the 83 350 which was 2 piece rear seal, which used a flex plate with no weights. flexplates aren't expensive,($35.00).. just get the right diameter one to fit the starter, 153 or 168 tooth.. BUT, first you have to know if you have a 1 or 2 piece rear main seal.. Boy Markdtn, I have to learn how to type faster, LOL Attached Images __________________ Thanks, Joe.. 1969 C/10, 348 C.I., 3X2 bbl. V8, 2004r , LWB.