Speedometer gear
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Senior Member
Joined: Jan 2001
Posts: 337
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From: SaN AnGeLo
Speedometer gear
i have 4.10s on my truck and im trying to figure what kind speedometer gear i need for my truck. any one know how many drive teeth there are on a early 97 f150 auto with 3.55's, what exactly do i need to do to find this out? let me know..ive already got the calculation for my tire size. please help.
Senior Member
Joined: Dec 1999
Posts: 2,105
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From: CT.
I just got my truck back from the shop... i had 4:10's installed ..had the 3:55's ..i think they said they used a 25 tooth gear for the tranny.. the # is DFM17271A GEAR they got it from a performance shop near me.. www.mustangsunlimited.com ..