my set up: fullsize chevy truck 350cu, th350, 203/205, 5.13 axle gears, 42" tires = a crawl ratio of about 51

i used this calculator (http://www.dfw-tx4wd.org/Tech-Dept/gears.html)

most of my friends are running toyotas and they all have ratios up around 100.

am i going to be low enough? am i comparing apples to oranges because of the 8 cylinder engine automatic transmision (chevy) combo vs. 4 cylinder manual transmision (toyota) combo?
thanks!

I get 48.6, but with an auto you have the multiplication of the convertor
also

that is what i was wondering about, thanks! what stall is your converter? i was going to run a stock one. i have heard arguments for high stalls and low stalls.

its torque multiplication, not gear multiplication for all autos.

my set up: fullsize chevy truck 350cu, th350, 203/205, 5.13 axle gears, 42" tires = a crawl ratio of about 51

i used this calculator (http://www.dfw-tx4wd.org/Tech-Dept/gears.html)

most of my friends are running toyotas and they all have ratios up around 100.

am i going to be low enough? am i comparing apples to oranges because of the 8 cylinder engine automatic transmision (chevy) combo vs. 4 cylinder manual transmision (toyota) combo?
thanks!
IF you have all that in your rig and dont know if it will be enough, you should sell it all to me for like $10 and take up badmitton.

well on mine i got 91:1 and its great... but the only catch is... look at my sig...

as a general rule of thumb, multiply x2 for the TC.

With a full size rig you are going to want to be lower than 52-ish :1 It will be ok but there will be times that a little lower will help in big technical rock sections.

how about you get off your computer, go find some rocks, stick your t-cases in double low and go wheeling. go test it out, wheel the wee out of it and if it's not low enough make mods in the future. stop web wheeling and start driving your truck off road. wheeling is fun because there aren't any places that check the amount of low range you have before allowing you to try driving up/over/through.

however i am NOT convinced you actually have this setup. if you did have this already in your truck running and driving you wouldn't be on here wasting our time. unless you're the type of guy who buys too much crap for his rig then sits around the local 4x4 shop or 4x4 club talking about how great his truck is.

bottom line = GO WHEELING

reeser is right, acording to the little calculator, I have a 18.50 ratio.
I get along just fine. I have a 454 so I am able to make up for my short comings with the go pedal but it all comes down to just going out there and playen with your shit.

am i comparing apples to oranges because of the 8 cylinder engine automatic transmision (chevy) combo vs. 4 cylinder manual transmision (toyota) combo?
thanks!

Yes, you are comparing apples to oranges. Add in the convertor on the automatic and you probably at least around 100:1, plus you have an engine that actually makes a little power.

As already mentioned the only person who can truly answer the question is YOU! Go try it out and see what you think. Generally I think that you should have enough gearing for any trail obstacle, maybe not completely ideal for serious and technical rock trails, but quite sufficient.

I couldn't imagine being limited to anything less than 223:1. No wonder all you Chevy guys are runnin' juice boxes... :flipoff2:

you have a lot of good parts but you still are higher% than a stock 465/205 [56:1] which is what i have with my 37"s and i wish i had more. the 2x is nice though, it gives you alot more range optoins that i wish i had

how about you get off your computer, go find some rocks, stick your t-cases in double low and go wheeling. go test it out, wheel the wee out of it and if it's not low enough make mods in the future. stop web wheeling and start driving your truck off road. wheeling is fun because there aren't any places that check the amount of low range you have before allowing you to try driving up/over/through.

however i am NOT convinced you actually have this setup. if you did have this already in your truck running and driving you wouldn't be on here wasting our time. unless you're the type of guy who buys too much crap for his rig then sits around the local 4x4 shop or 4x4 club talking about how great his truck is.

bottom line = GO WHEELING

i have all of this stuff, but not together yet. i hate doing things twice if i don't have to, and wanted to get some opinions before i put everything together. thanks for all of your replies.

i know the feeling, but like it or not you will NEVER built it right the first time. nobody in the history of 4x4 has built a rig once and said "that's good enough" everyone makes changes.

apples vs. oranges
---you cannot compare crawl ratios between manual and automatics. autos will ALWAYS have higher crawl ratios. as stated earlier 50:1 in an auto is pretty low (alot lower than your 56:1 TRKKLR77)

The toys and really anything with a 4 cylinder needs tons of gear or they won't pull a greased string out of a cats ass. Motors with some power make up for a bunch.

I think its a little anal retentive to worry about the crawl ratio number. Worry about what youre running, the quality of the parts you are running, and how decent/crappy you drive. :p

im running your same setup except i have 39.5s. i like my gearing - its not stupid low like some other peoples but hey it definetly gets the job done. i have good control with the gearing that i have and could care less if someone is 1,000x lower then me. just my opinion though.

i just picked up a set of 42s , so once i get some beadlocks for them ill see how that works. ryan

Spend some money on one of those cases and get a 3:1 put in and you will be even more versitile 1:1,2:1,3:1,6:1 then I'll bet you're low enough

i am running almost the exact setup you have in mind except i have 39.5" boggers. i got the doubler , 513s, th400 w/manual valvebody yada yada and i like my setup. Yes there are plenty of guys out there that are lower then me but so what , mine does everything i need it to do and then some.

as soon as i get some beadlocks i will be running some 42s i just picked up - so im anxious to get those on.