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Old 09-02-2010, 05:20 PM
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Quote:
Originally Posted by ted200008
i have a 71 350. i think its a 4 bolt main, but im not sure. anyways... the harmonic balancer is only 1 1/4" thick?? any other 350 that i have seen, the harmonic balancer is alot bigger? any explainations?
Most 350 engines from the 1970's have that balancer, only truck 3/4 ton 4-barrel engines and the higher performance Corvette or Z28 engines got thicker ones. Also, if you look at the thicker 1979-up balancers they are hollow on the back side of the ring, they look thicker but don't weigh any more than the thinner ones. The one you have was the most common seen in wrecking yards until the mid 80's when the 70's stuff started to become more scarce.

There are some really thin 7/8" thick or so balancers on some low performance 265/283/327 engines if you want to see a really small balancer.
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