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Old 05-15-2012, 10:28 AM   #141
kikkegek
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Join Date: Aug 2010
Location: Netherlands, The Hague
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Re: Suburban K20 1986 Silverado

Quote:
Originally Posted by Edahall View Post



Around 1987 the THM 700-R4, now know as the 4l60, was introduced with an auxiliary valve Body. There is an easy way to find out if your 700R4 has an auxiliary valve body. As illustrated in this picture, look for the casting mark where the arrows are pointing to. If your 700R4 has this casting mark you have an auxiliary valve body 700-R4.
thank you thank you thank you....that makes me very happy...

funny though that my tranny comes of a 87 K5 Blazer. So it must have been replaced...still would like to know what the rest of the numbers mean
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