do the 1973-1978 toyota hi-lux 2wd pickups.do any of them have a close-ratio transmisson??? my 1977 datsun 620 pickup did,i couldn't make 50 mph without being in 5th gear.

 

no, check out my thread

http://www.toyotaminis.com/forum/showthread.php?t=5701

 

thanks man!!!

 

no probs!

 

that style and a few years into the 79-83s had the w50. which had a real truck like gear spacing. first is short, second is close to it. then a huge step to third. then 3/4/5 are all close together. too close for the powerband of these motors. i swapped to a w55 which is all the same except first is even shorter. id advise 4.10 gears if you want something to feel closer. they came in 5 speed trucks. im looking to find a 72-78 truck with a 3.7 setup. ill trade if anybody has a good rear end of that era (width is important so i need that era)

 

thanks!!! i have a w55 trans in my 93 2wd!!! it seemed the gears in the transmission were taller when it had the 275/r14 tires.now since i have that djm 3/4 drop kit plus now i'm on 60 series tires on 14's.the 1st,2nd,3rd, seem much closer together,when i hit 4th and 5th the gears seem the same.i'm looking to run 18 tsw wheels next year.hopefully that will correct that!!! i had 92 honda accord ex 4-dr.with a 5-spd and a maganaflow exhaust lowered on eibach pro-kit springs.my transmission had tall gears.it stayed the same even when i lowered it. i love taller gearing transmissions.has anybody had a watercooled vw. i had a 1986 vw gti with the 1.8liter 8vave it had a 9a-close-ratio trans in that car.it was a fun car too!!!

 

drastic changes in tire height effect gearing. tall tires make for tall gears. short tires make for short gears. being that ive steeped down my rear tire size a few times, im looking to swap rear end gears. when/if you get 18s, make the tire size about 24.5" tall. dont worry about width, thats whatever you wanna run. should bring the gearing back towards stock a bit, and have been highwayability

 

thanks man!!! that was what i was thinking too!!!

 

i also thought the longer or shorter your driveshaft is depaends on your gearining too???

 

driveshaft length has absolutly nothing to do with gearing. because its turning the same speed at both ends. it doesnt twist. every turn of the transmission tailshaft is 1 turn of the rearend input shaft.

if you do some math, you can figure out where the powerband will be in each gear. thats probably more technical than you need to figure into this all. its sort of complicated, and you need to know all the variables. but i use a few formulas ive writen to find out the info.

to find RPM @ known MPH use:

example: with 4.10 gears, in 5th (in a w55), with a 195/70/14 tire: i am doing 3300rpm @70mph. to find all of that out, use these formulas

MPH x 1056
----------- x GR x RR = RPM
TC


to find diameter: *** x. ** x 2 / 25.4 + ** using digits of tire size
For 195/70/14: 195 x .70 x 2 / 25.4 + 14 = 24.74"

TC = tire circumference (diameter x 3.14)
GR = ratio of gear being factored (0.85 for W50/55/56 0.78 for W58)
RR = rearend ratio

so for my setup, heres the way it works out

70 x 1056
--------- x 0.85 x 4.10 = 3315 RPM @ 70 MPH.
77.7

same size tire with a W58 and 3.73 rearend

70 x 1056
--------- x 0.78 x 3.73 = 2767
77.7



and for tomorrows homework...

 

yes, i wrote that formula out. there are websites that let you punch in the info, but im a total math nerd.

 

thanks!!! i read stuff different sites.they they tell you diffrent things it's hard to comprehend.thanks for your help!!!

 

if i had 3.73 gears put in with 18 inch wheels and tires is that a good combination too???is it better then my factory 4.10 gearing with the 18's???

 

it will give you a better freeway speed. If you have the torq to turn em they will be pretty quick. It all depends on what you are looking for. Quick off the start or better top speed. I prefer a taller gear just cause I hate having to shift like crazy, plus I like the gas mileage boost.

 

thanks are the 3.73 taller then the 4.10's too???