Thread: how to tell a th350 from a th400
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Old 08-22-2016, 10:26 PM   #18
factorystock
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Re: how to tell a th350 from a th400
Quote:
Originally Posted by Chevy1972/GMC2000 View Post
trans is option coded as a M49, what trans is that?
Ok, OP is long gone, however GM did cause some confustion by listing the same SPID code M49 for both "turbo hydramatics" in some years.
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