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According to the OEM parts list I have they are different part numbers (80-86). I don't have 86-90 parts list. The F-150 OEM Part number is E2Tz 5005 and depending on the length of the wheel base they end with M, N, R, or S and the F-250 is the same number up to 5/3/1982 with an ending letter of W, Z, C and after 5/3/82 an L, Y, AE or D.
What the hell, here is the list:
F-150 116" E2TZ 5005 M
F-150 133" E2TZ 5005 N
F-150 138" E2TZ 5005 R
F-150 155" E2TZ 5005 S
F-250
133" Standard E2TZ 5005 W
133" Heavy Duty E2TZ 5005 Z
136" E8TZ 5005 C
138" before 5/3/82 EOTZ 5005 L
138" after 5/3/82 E2TZ 5005 Y
155" E2TZ 5005 AE
160" E8TZ 5005 D
There, thats what I have in a repair parts estimating pages. Might be for naught, but I had it.
Watch the motors as well, as I have found differences with 351W's and 460's, the 351 has the oil filter hole, but the 460 does not. You can look in my gallery for examples.
Thanks fellro I looked at the pictures in the gallery you have. The problem is I want to put a 95 F150 front and rear suspension under my 86 F250 so I can give it a 5/7in drop. I have a post in the NC Chapter about it.