gear ratio help
OK guys i need some help, I have a 97 f250 4x4 automatic. I need help finding out what ratios in it. I run at 2000 rpm going 70 on 33x12.50's. I was told 4.10's but i don't think that is right. I need help quick. I have not had a chance to check the code, could some tell me exactly where to look? Thanks in advance for any help.
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take your vin and go to any ford dealership. they should be able to punch in the vin and tell you *everything* about your truck.
if you cannot do that physically, there may be a way to do it online. |
sounds like you have 3.55s, just check the tag on the diff cover
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yeah, I have 4.10s and im usually around 2500rpm at 70mph. stock tires though 235/85 r16 i think
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you have the 3.55. if you had a 4.10 your rpms at 70 would be about 2900rpm. you can also use this calculator to double check other things too, but i would bet you have a 3.55.
remember calculate the gear ratio, WITHOUT using overdrive as it is under a 1:1 ratio.. SummitRacing.com |
the door tag has an axle code. google that code and ta da you have your answer. these either came with 3.55s or 4.10s, you have 3.55s
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i have the sales receipt from my 1995 7.3 and it says it has the 4:10 gear ratio. but it was an extra with the truck. so it is possible but its more likely yoiu have the 3:73 gearing.
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gear ratio help
Originally Posted by thorraven
(Post 999959)
you have the 3.55. if you had a 4.10 your rpms at 70 would be about 2900rpm. you can also use this calculator to double check other things too, but i would bet you have a 3.55.
remember calculate the gear ratio, WITHOUT using overdrive as it is under a 1:1 ratio.. SummitRacing.com |
Originally Posted by Grizzly_Diesel
(Post 1001892)
i have the sales receipt from my 1995 7.3 and it says it has the 4:10 gear ratio. but it was an extra with the truck. so it is possible but its more likely yoiu have the 3:73 gearing.
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