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According to http://www.4speeds.com/muncie2.htm, the casting 3925660 is for 68-70 and 3925661 for 70-74 - all Muncie 4-speeds. Your 661 case (P1B26A) decodes to February (B), 26 and is the M20 ratio (A). Your 660 case (POC19A) decodes to March (C) 19 and is the M20 ratio (A). Interesting info on input shaft rings and spline counts as well. Dale McIntosh ACES #1709/TC #92 Gold 67 SS/67 Elky http://www.dalesplace.com > Thanks Kent for that lead, > the tranny number the person selling it gave me was a 3925661 / P1B26A. > He is 100% positive that it's a M22 Rock crusher, because he says that it > has a fine spline. > > The other tranny, the one from last night, it's a 3925660 / POC19A. He too > is saying that it's a M22. > > But doesn't the A mean that it's a M20? > > Thanks for that link to http://www.interlog.com/~muncie/, very nice! > ----------------------------------------------------- To Unsubscribe please visit www.chevelles.net/list.html To start a new topic, send mail to: [EMAIL PROTECTED]
