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1961 - 1966 F-100 & Larger F-Series Trucks Discuss the Slick Sixties Ford Truck

transmission problem

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Old Aug 20, 2014 | 10:28 PM
  #1  
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transmission problem

i have a 61 ford f250 4x4 and 292 4 speed
and the problem i am having is it wont stay in 3rd gear
the syncro,s and all bearings have been replaced, what am i missing
what could be causing the problem
thanks
 
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Old Aug 21, 2014 | 01:04 PM
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Popping out of 3rd gear is usually caused by worn 3/4 synchronizer brass blocker rings.
 
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Old Aug 21, 2014 | 03:06 PM
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had this problem t98 would blow out of third under load.
the front bearing input is different from the back border parts sold me two fronts(I think or two rears i have crs) anyway one is thicker than other you have to look close, is their a lot slop in the top gear cluster? a 1/4" is to much


looking to see if I have a pic of bearings no pic
to clarify a little the gap between the input shaft and the out put shaft should not be over an 1/8"
 
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Old Aug 21, 2014 | 03:51 PM
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Originally Posted by schoo
had this problem T-98 would blow out of third under load.

the input shaft (front) bearing is different from the output shaft (rear) bearing. border parts sold me two fronts (I think or two rears i have crs) anyway one is thicker than other, you have to look close.
Bearings have a BIN (Bearing Industry Number) stamped on them, these are the numbers auto parts stores and bearing shops use.

8MTH-7025 .. Input Shaft Bearing / 1.5745" I.D. x 3.5430" O.D. - slotted for snap ring.

BIN: 308 L1 or B308-AMGS or 5052-AMG or X3244-G
-----------------------------------------------------------------
7EQ-7065 .. Output Shaft Bearing / 1.5745" I.D. x 3.5429" O.D. - .9025" thickness - grooved for snap ring.

BIN: 308 L or B308-AG or 33466 or 38831 or X3321-G
 
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