Originally Posted by Route55
I've only owned two 73-77 trucks. Both were parts trucks, but originally FE motor manual trans f-250 models. Both had 4.10. I've read that 73-77 trucks used a wider array of gear ratios, but for 78-79 I've only seen the two. I'm not saying thats all they used, but the "norm" those two years seems to be manual - 4.10 Automatic - 3.54.
I wasn't doubting you, just adding to the curiosity...even the Early Bronco I robbed parts off of had 3.54's....weird.
The 30-some '70-'89 Chevy's I've parted out have ranged from 2.73, 3.08, 3.54, 3.73, 4.11, and even 4.56 with no real decernable pattern....for once the Ford guys have it "easy".