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Hi y'all, once again i need some help. I am trying to determine the best gear ration to use in my 7.5 rear end. it of course has the stock 3.75 in it now w/o a posi and i am getting terrible gas milage with the 33's that are on it now. does anybody have any legitament ideas as to what the best ring gear ratio to get. i use this as my daily driver but do still like to do some moderate wheeling (no sissy here). any and all help is like always.... highly apprieated.
thanks again ya'll, ya'll are an outstanding group of guys/girls.
Taking the mudguppy one rut at a time.
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I would think a set of 4.10/4.11's would do you great justice. I know my old 2000 dakota 4x4 got better mileage with the 31's vs. 33" it had 3.55's.
what motor ya got in the BII?
77 built 306,Trickflow Cam/Alum Heads/dome pistons/10:1comp,nv3550,duff long arms,3.5" lift,family cage,protofab rear bumper,twin sticked, and 35KM2'sG.D.I.
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2.9l for now...4.0 tax season???
Taking the mudguppy one rut at a time.
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there is a think on b2.org about 33s and i think to get the best milage with 33s is 4.10 for a DD
if you want 4.10s find a b2 with an auto alot of them had 4.10s just check the door or axle tag and it will tell you
86broncoII with 2in of lift 31x!2.50 SUPER SWAMPER BOGGERS steeringstableizer, skyjacker ext brakelines, and james duff prerunner front bumper
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i put 33's on my diesel and lost around 60 miles per tank. its geared 3.7ish
i may put some 4.10 -4.11 in it.
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I Have Pretty much the same setup. I'm running 35's with 4:10 gears and I don't have a single issue, at least with the rear end. The Front end's a whole different issue
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I thank y'all for the help. I got a great deal on an explorer donor so i will be looking for something in the 4.10ish range.
Taking the mudguppy one rut at a time.
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hey i looked on my door it just has the sticker tellin you the year tire size an stuff does it tell you what gears is in it if not where is the axle tag i have a 2.9 auto wonderin what my gear raito is
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Look on the front of the 9-bolt housing. Affixed to one of the studs is a small metal tag with a series of numbers. It should be there assuming someone did not fail to replace it for whatever reason during a servicing.
'77 351w- Explorer EFI, 4R70W, 4-link, lockers, 4.56, 35" MT/Rs with a severe rock addiction.
mokin:
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