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Old 08-07-2003, 05:19 PM
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Flex plate switch ??

I have a used new to me 327 motor 63(3782870 a 29 62) version. I took the flex plate off a 305 I had laying around 168 tooth. Is there any problem using it on the 327 motor, it did seem to fit ok, bolt holes and dowel hole lined up. The only differance is the mount for the 305 behind the bolt flange is larger and can be seen through the openings in the flexplate, the one on the 327 has a smaller flange. Thanks I am new to all this motor work, willing to give it a try. Ed ke6bnl

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Old 08-08-2003, 12:00 AM
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As long as the flex-plate diameter matches the diameter of the old one you should be OK. The 305 is internally balanced, as is the 327. The irregularities of the flange are typical of Chevy engines. Some are round, some have irregular shapes, some of which are different from others. As long as the bolt pattern is the same & there's no balance-weight (400cid only) welded to the flex-plate it should work fine.

Last edited by jimfulco; 08-08-2003 at 12:05 AM.
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Old 08-08-2003, 06:43 AM
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Quote:
Originally posted by jimfulco
As long as the flex-plate diameter matches the diameter of the old one you should be OK. The 305 is internally balanced, as is the 327. The irregularities of the flange are typical of Chevy engines. Some are round, some have irregular shapes, some of which are different from others. As long as the bolt pattern is the same & there's no balance-weight (400cid only) welded to the flex-plate it should work fine.
Thanks for the help things that seem simple are not so when it is the first time around. Thanks ed ke6bnl
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Old 08-08-2003, 07:50 AM
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What jim said was on the money, but remember this also, Chevy starters use 2 different patterns, straight pattern is the 153 tooth 12 inch flexplate, the staggerd pattern is 168 tooth 14 incher. however, you can`t use a straight pattern starter on a 168 tooth flexplate, and you can`t use a staggerd pattern starter on a 153 tooth flexplate.
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