I have a 97 f150 with the 4.6. I am runing 35s and was wondering what I could do as far as gears to get back some of my lost power.

 

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Most say 4.56's get it back, closest to stock. I think personally, im goiing to do 4.88 since the 97/98's don't have the pi heads.

 

4.56 for 35's and 4.88's for 37's or 38's if you think you want to go bigger later on.

 

So what am I going to be looking at for $$$ for the correct set up if I'm going to be running 4.56 gears?

 

if your 4x4, prolly about 1200-1700 i'd guess if your taking it some where. Prolly 500-700 for 2wd. Unless you do it yourself, then just price of gears, shims, etc.....

 

Yeah I am 4x4 and would be doing it myself. I have rebuilt a few Chevy rear ends but never changed the ratio. What would be a decent brand to go with?

 

i've heard good stuff about ford racing, yukon, and precision. im asking for ford racing 4.56's for christmas. the cheapest place i've found them is from www.summitracing.com $220 for ford racing 4.56's, even cheaper for cheaper brands.

 

hey carbon where are you located?? want to do mine for me after you do yours haha

 

Ok, so I'm not sure what I have for a ratio right now until I go check out. A guy is telling me I have 3.55's and that 4.10 would bring me back to stock with the 35's. Any inputs?

 

check out this website: www.4lo.com

got some cool calculators.

 

I would guess you have a 3.55 LS.
No. 4.10's won't be low enough for you prolly. You'd be so much more pleased with 4.56's im guessin.

 

Well, using a gear calculator.. Any gear ratio closest to 4:14(4:10s) would put you back to stock going from a 3:55 gear ratio. If you were going to want to be similar to stock with 3:73s then (4:37)4:30s would put you close, and 4:56s would be even better. Maybe comparable to a 4:10 ratio at stock? My math could be wrong but its kinda hard to screw it up when all you got to do is enter in numbers

 

I would definatly go with the 4:56's. You will gain all of your lost power plus more. He can't run the 4:30's since it is a 4x4 and the 4.10's would bring you around stock, maybe a little under. IMO 4:56's are your best bet and you would not be dissapointed.

 

Youre right.. forgot theres no such thing as a reverse cut 4:30.