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Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
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From: Simi Valley, CA
What appears to be casting number prefix: D60P (cast into the trans case), isn't any help, as casting numbers cannot be cross referenced to Ford part numbers.
11 trans pan bolt holes: C4
14 trans pan bolt holes: FMX (1973/76 F350 300 I-6 only).
17 trans pan bolt holes: C6
11 trans pan bolt holes: C4
14 trans pan bolt holes: FMX (1973/76 F350 300 I-6 only).
17 trans pan bolt holes: C6
Moderator & parts slinger
Joined: Feb 2007
Posts: 50,247
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From: S/W Missouri, Polk county
transmission! 
Moderator & parts slinger
Joined: Feb 2007
Posts: 50,247
Likes: 5,815
From: S/W Missouri, Polk county
NP435 = aluminumtop cover w/8 bolts
T-18 = cast iron top cover w/6 bolts Warranty Plate TRANS code:A=NP435 (N-1965 only) /F=Warner T-18 /P=F350 Warner T-19.
Warner shift lever retainer cap (8MTH-7220)threads on/off.
NP435 shift lever retainer cap (B8T-7220-D)has two notches, is retained to shift tower by two pins.
To remove this cap, it must be pressed down and held down while turning it counter clockwise to remove it. (Its spring loaded and twists into place, we removed one and it was a 2 person job. Put the trans into 2nd, 4th, or reverse, then one person holds the cap and applies pressure, twisting in a counter clockwise direction. The other person hits it from the top with a hammer to get the cap to go in below the two clips that hold it in.) People unaware use pliers or channel locks to remove it, which tears out the pins.
Originally NP435: Reverse-down towards the seat, while Warner T-18: Reverse-uptowards the dash.
The reverse shift pattern was changed circa 1973, but I can't recall forwhich of these 4 speeds. ( I believe it the NP435)
Note: There's another 4 speed: RUG SR-OD Single Rail 4 Speed Overdrive introduced in 1978 F100/150 300/302, TRANS codeB
T-18 = cast iron top cover w/6 bolts Warranty Plate TRANS code:A=NP435 (N-1965 only) /F=Warner T-18 /P=F350 Warner T-19.
Warner shift lever retainer cap (8MTH-7220)threads on/off.
NP435 shift lever retainer cap (B8T-7220-D)has two notches, is retained to shift tower by two pins.
To remove this cap, it must be pressed down and held down while turning it counter clockwise to remove it. (Its spring loaded and twists into place, we removed one and it was a 2 person job. Put the trans into 2nd, 4th, or reverse, then one person holds the cap and applies pressure, twisting in a counter clockwise direction. The other person hits it from the top with a hammer to get the cap to go in below the two clips that hold it in.) People unaware use pliers or channel locks to remove it, which tears out the pins.
Originally NP435: Reverse-down towards the seat, while Warner T-18: Reverse-uptowards the dash.
The reverse shift pattern was changed circa 1973, but I can't recall forwhich of these 4 speeds. ( I believe it the NP435)
Note: There's another 4 speed: RUG SR-OD Single Rail 4 Speed Overdrive introduced in 1978 F100/150 300/302, TRANS codeB
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