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84 Scottsdale (silverado) Lift ??

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So what gear ratio should I get If I run 35's? (Street driving) /forums/images/graemlins/confused.gif

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700R4 - 4.88 or 5.13

What is a 700R4?

John

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700R-4 is the name/number given to the 4 Speed automatic OD transmission. This is whats in your truck.

I'd go 4.88 ratio gears

John
 
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Auto OD tranny? 4.56's.

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auto w/ OD

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4.10's will work but be slightly on the high side and 5.13's if you want lots of power but don't mind loosing some fuel mileage. 4.56's are a good combo with 35's.
 
Whats up guys, Ive just been kicking back reading threads and learning more and more everyday. Anyways. I just was looking over my truck, and it turns out that I have 3.73 gear ratio in the rear axle /forums/images/graemlins/peace.gif (not sure about the front.) Given that information, does that change anything as far as me being able to run 35's???... I know, I know, "get a 14 bolt"... but I would like to get as much life out of these 10 bolts before going too 14 bolts... Is there any way to run 35's with 3.73 gears, and will my transmission handle it??? /forums/images/graemlins/ears.gifThanks.
 
3.73 = its going to bog down when you start rolling... but after that it will probably be ok
once again, no hard driving and the axles will survive as long as you want them too... if you want to break it you will be able to
 
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3.73s are good for 31s with a 700R4, pushing it with 33s, and absolutely brutal with 35s.

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So thats a no /forums/images/graemlins/confused.gif so thats a yes /forums/images/graemlins/confused.gif
 
its definately pushing it, it will be slow, will build up extra heat in the transmission, and again, will be slowwwww. However, you will get better fuel mileage on the interstate, but will lose mileage in town.

The transmission heat thing you will want to put a tranny cooler on regardless of if you regear or not. If it were me I would go to 4.88 since you do have OD, I dont have OD and run 35's, but if I didnt have a hairy 496, I would have to regear to 4.56 or 4.88 and deal w/ the interstate part.

Stick some 35s on it, but definately have the $$ saved for either a regear or an axle swap, because you are going to want to do it as soon as you drive it.
 
AAAAAAAAAHHHH!!! /forums/images/graemlins/angryfire.gif

To me there is no point in regearing because it probably cost more to re-gear then to do a axle swap. If the axle blows up in too a million pieces I dont care, but if the transmission blows, or anything else, then I am bummed out. AAAAAAAAHHHH!!! /forums/images/graemlins/cool.gif
 
I had a tacoma with 35's and stock 4.10's and it wasnt that bad. It was definetly WAAAY slower, but not unbearable. Do you think I can pull it off?
 
I got by for a while with 3.08's and 31's ,32's and the 33's . Not a quick truck off the line , but got me around , and wheeled . 35's and 3.73 should perform the same . If you have the cash go lower , if you want to save it for a bit just don't use overdrive position in town , only on freeway at cruising speed /forums/images/graemlins/k5.gif /forums/images/graemlins/k5.gif
 
Thanks for the info. Im going to try it with the 3.73...BUT will be getting 14b in the very near future. Think my tranny will hold up ok if I keep it out of OD w/ 35z?
 
If you're not going to go off-roading, then getting the 5" Deavers will be useless since they are race springs and require some fabrication since they are longer than stock.
 
If your tranny has been rebuilt YES , if not I can't say . I used mine for months at a time without using overdrive much . I have wheeled many times . And my tranny has over 40,000 of MY OWN miles on it since probably way after the previous owner had it gone through /forums/images/graemlins/k5.gif /forums/images/graemlins/k5.gif
 
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If your tranny has been rebuilt YES , if not I can't say . I used mine for months at a time without using overdrive much . I have wheeled many times . And my tranny has over 40,000 of MY OWN miles on it since probably way after the previous owner had it gone through /forums/images/graemlins/k5.gif /forums/images/graemlins/k5.gif

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It hasnt been rebuilt. Has 107,000 miles on motor.
 
Well I doubt not using overdrive will hurt it if you have a cooler on it . From a strength standpoint overdrive is the weakest gear anyway , and the converter will lock up anyway in 3rd IIRC /forums/images/graemlins/k5.gif /forums/images/graemlins/k5.gif
 
dude
i ran 35's with 2:73's for about a year til my tranny smoked because of it.... hahaha fun times being stupid.
luke
 
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Whats up guys, Ive just been kicking back reading threads and learning more and more everyday.

[/ QUOTE ] Good to hear. /forums/images/graemlins/waytogo.gif

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I just was looking over my truck, and it turns out that I have 3.73 gear ratio in the rear axle /forums/images/graemlins/peace.gif (not sure about the front.) Given that information, does that change anything as far as me being able to run 35's???...

[/ QUOTE ] First off if your axles are still factory the front should be exactly the same as the rear. You should never have different ratios front and back because all four tires need to spin at the exact same speed. Having 3.73's really doesn't help you much at all, infact, IMHO, it makes it worse because it's close to runable with 35's and you'll probably go ahead and do it at the cost of frying the tranny. If you had 3.08's it would be no question and an axle swap would be in order along with the 35's thus saving the tranny and ultimatly saving you money. /forums/images/graemlins/wink.gif


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but I would like to get as much life out of these 10 bolts before going too 14 bolts ... Is there any way to run 35's with 3.73 gears, and will my transmission handle it???

[/ QUOTE ] First, GM corporate axles are only found in the rear BESIDES the 10B front, otherwise it will be a D44 or D60 up front. I don't see a reason to keep the 10B's if you are determined to run 35's. If it was me I would run 31's preferably and maybe 33's as a compromise to keep from having to perform an axle swap. Forget the 10B's if you really want 35's IMHO. There is no way to run 35's with 3.73's without it stressing the tranny and being boring to drive and no.....your tranny won't handle it. It will for a while but the higher running temps will do it in long before it's time.

Oh, and you are completely right about it being cheaper to convert to 3/4 ton even if it's soley for a lower ratio vs. having your current 10b's geared down.

If it was me and wanted to run 35's there would be no question. Hunt for a set of 4.56 3/4 axles (14BFF rear, 10B or D44 8 lugger up front with matching gear ratio as rear), buy 8 lug rims and new 35" tires, and swap everything in. YOu can score a set of 3/4 tons for $400 easily, probably less if your lucky and you will love the better braking performance, cool factor, extra load capacity, peace of mind offroad and towing knowing you have shear beef back there, and best of all....a happy TH700R4. /forums/images/graemlins/waytogo.gif

That is exactly the order I did. I had 3.73's on 33" SSR's for a long time but when I started busting drivelines after my motor swap and wanting 35's myself... I hunted for axles. I am 3/4 ton now with a total investment of about $600. The local gear shop wanted $1200 do just swap gears.
 
My first 3/4 ton swap was due to the same reason. I wanted to have a detroit installed and 4.10s, and it was going to be over $1k. I got a pair of 4.10 geared 3/4 tons for free and I was ready to rock.
 

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