What type of gear was used in a 1990 f250 3/4 ton with a 4.9 engine?

Asked by Mar 24, 2010 at 10:34 PM about the 1990 Ford F-250

Question type: Car Customization

I recently bought a 1990 f-250 with a 4.9 liter engine. 300 6 cylinder. It is geared really low. (too low) I am running about 3200 rpm at 65 mph and would at least like to get to 65 at 2200 to 2500. The tag on the rear end does not specify the ratio and I am very curious what type of gear I am running, and what type of gear I can replace it with to still get a fair amount of power to work with.

1 Answer

35

What transmission do you have? If you a direct drive transmission (i.e. non-overdrive automatic or 4 speed manual), it sounds like you have 4.56's. You would be at 3112 rpm's with stock tires. 3.55's or 3.73 will put you the rpm range you want. With 3.55's your rpm's will be at 2423, with 3.73 you will be at 2546 rpm's. Both gears should be alright, but if you do any towing or hauling, the 3.73's would do ya a little better. If you have an overdrive transmission, your down in the 5's. Either way those gears probably not your stock gears.

Your Answer

Add photo

Related Questions

Search Ford F-250 Questions

Ford F-250 Experts

#1 tennisshoes
tennisshoes
Reputation 580
#2 FordNut
FordNut
Reputation 510
#3 dandyoun
dandyoun
Reputation 340
View All

Related Models For Sale

Used Ford F-150
2,702 Great Deals out of 211,804 listings starting at $1,000
Used Ford F-350
331 listings starting at $7,995
Used GMC Sierra 1500
941 Great Deals out of 62,271 listings starting at $1,395
Used GMC Sierra 2500
194 listings starting at $5,995
Used Ford Mustang
364 Great Deals out of 44,400 listings starting at $1,000

Used Cars For Sale

1999 Ford F-250 For Sale
30 listings starting at $3,500
1998 Ford F-250 For Sale
19 listings starting at $3,500