ggzilla Posted November 16, 2012 Report Share Posted November 16, 2012 Toyota and Nissan use different size gears. But Nissan has a vast range of gearsets, so no problem there. You can buy a good used pumpkin for less than a new gearset, and you don't have to pay an expert to install a pumpkin. 1 Quote Link to comment
Zlich Posted November 16, 2012 Report Share Posted November 16, 2012 Where would you find a different pumkin? like online websites and stuff like that? And whats the gearing I should go with? 4.37 4.11 or the 5.1? And how hard is it to change the gears in the front end? 1 Quote Link to comment
ggzilla Posted November 16, 2012 Report Share Posted November 16, 2012 You find them in classifieds like Ratsun parts for sale, craigslist, guys parting out -- or at wrecking yards. They are common, not hard to find. Only $75 at pick-n-pull. New gears alone cost hundreds + $150 to install. For the front, you can change gears or swap in entire R180 unit (less work). Either way you gotta remove axles and driveshaft. Dunno if you can get 5.1 for the 4x4 front. 1 Quote Link to comment
Zlich Posted November 16, 2012 Report Share Posted November 16, 2012 okay I have a few questions. whats an R180 unit(something to do with the front end Im guessing)? how do you find out whats the stock axle for front and back? I think my rear is the h190? and so go with 4.11 gears and how would I find the proper gears in the pumkins? the same way I found mine out on my truck to begin with? 1 Quote Link to comment
ggzilla Posted November 16, 2012 Report Share Posted November 16, 2012 Yep, look on the silver underhood plate. 1 Quote Link to comment
Zlich Posted November 16, 2012 Report Share Posted November 16, 2012 How hard is it to pull a whole unit out from the front end? I can probably get into a junk yard out in kingston for super cheap to find the parts my welding shop teacher owns it and will give me good deals. 1 Quote Link to comment
ggzilla Posted November 16, 2012 Report Share Posted November 16, 2012 way easier than swapping the gears ... 1 Quote Link to comment
Zlich Posted November 16, 2012 Report Share Posted November 16, 2012 yeah probably. dont the newer 720's have the H190 rear axle on them? 1 Quote Link to comment
ggzilla Posted November 16, 2012 Report Share Posted November 16, 2012 Some do, some don't. 1 Quote Link to comment
Zlich Posted November 16, 2012 Report Share Posted November 16, 2012 ahh. okay. and what year datsun/nissan would have h190 4.11 gears? or is it kinda just a pick one and hope you find it? also would I be able to fit 32's or 33's without putting a lift on the truck? 1 Quote Link to comment
ggzilla Posted November 16, 2012 Report Share Posted November 16, 2012 Have a look on the plate, because each year 720 had a variety of gears. I'd go with the 4.375 -- give the truck more grunt, but can still do 80+ mph. This is a STOCK ratio for 720 4x4s with smaller tires than yours. Some 720 4x4 had 4.625. 4.11 H190 came in cars and trucks from 1960s to 1990s. 4.375 came in trucks from 1960s to 1980s If I was doing it, I'd look only at 4x4s for the gear I wanted and get a matched front & rear set. 1 Quote Link to comment
Zlich Posted November 16, 2012 Report Share Posted November 16, 2012 yea I will do that thanks for all the help ggzilla. 1 Quote Link to comment
Zlich Posted November 16, 2012 Report Share Posted November 16, 2012 Alright I posted it in my emissions post and Ill post it here too. I just calculated my gears spun the tires 10 times and the driveshaft spun 20 and almost made it 21 full rotations but it was like1/4 off from making it. calculated it as 20.75 and got 4.15 for my gearing 1 Quote Link to comment
ggzilla Posted November 16, 2012 Report Share Posted November 16, 2012 That's good. Some guys like that gear ratio, but I like more zip. You don't need to change the gear ratio, even if you put larger tires on it. It'll be a little slower, but go better on the highway if you keep the gears you have. 1 Quote Link to comment
Zlich Posted November 16, 2012 Report Share Posted November 16, 2012 Okay well atleast I know now I dont have to go through and find new gears. Im considering maybe swaping my back axle and the front axle with jeep axles. my buddy has a 89 cherokee and his rear axle is 4ft 5in give or take a couple inches and thatd fit perfect under the back. the front axle is a little narrower. Im still deciding on it though. 1 Quote Link to comment
ggzilla Posted November 17, 2012 Report Share Posted November 17, 2012 89 cherokee might be good. Some of the newer jeeps have weaker differentials than the Nissan units. 1 Quote Link to comment
Zlich Posted November 17, 2012 Report Share Posted November 17, 2012 yeah the front is narrower than my front end but I could find a wider one or something. 1 Quote Link to comment
datzenmike Posted November 17, 2012 Report Share Posted November 17, 2012 Early (up to mid '82) 720 4x4s were 4.374 but so was the '80 2wd 720 standard and automatic. Later (mid '82 and on) Z24 4x4s were 4.11 but the rear diff was a C200. '81-'82 2wd automatics were 4.11 Hey, it's easier to just look on the engine tag located under the pass side hood hinge on the inner fender. Bottom row far right. HF43. 43 is for 4.375. 41 would be 4.11, 38 would be 3.889 and so on. 1 Quote Link to comment
dedaelca Posted October 31, 2013 Report Share Posted October 31, 2013 I have a question... I have an 86 720 4x4 and on the tag it says i have a CA43 rear axle/diff. not CA200.. will a CA200 LSD work in mine? 1 Quote Link to comment
datzenmike Posted November 1, 2013 Report Share Posted November 1, 2013 I believe it's been done by swapping parts from an R200 240sx or 300zx. 1 Quote Link to comment
ggzilla Posted November 1, 2013 Report Share Posted November 1, 2013 CA43 means CA series diff, with 4.3 gear ratio. 1 Quote Link to comment
ggzilla Posted November 1, 2013 Report Share Posted November 1, 2013 CA200 and C200 are the same thing as far as I've been able to figure out. Sometimes Nissan calls it one thing sometimes another. 1 Quote Link to comment
720inOlyWa Posted July 13, 2015 Report Share Posted July 13, 2015 I have 4.11s in all my trucks.......in 4L/bull low.... pretty much climb any hill.......good torque Can crawl slower than Grandma with a cane, if need be..... ;) With 30 inch tires...it's 2500 RPM in 5th at 60MPH This is what I was looking for- affirmation! My 85 KC 4x4 is a CA 41. So it has the 4:11 ratios in the dif. Middle of the road, but still able to do all the 4x4 stuff I am ever going to need (up and down slimy boat launch ramps, huckleberry picking on Stampede Pass). So far, I only drove this truck up to 3rd gear before I heard nasty noises and snuck back home to check the trans out. But in that short time, it became apparent to me that the giant dumb tires slapped on it make it drive like a tank. Having the torsion bars cranked up is also no help to the overall roadability. I know, I know, I sound like a cranky old man, but the first thing I am going to do when the transmission is okay is to get stock spec 4x4 all terrain tires- safety siped- and crank it back down to factory specs. I bet I like it a lot better that way. Just sayin’... Quote Link to comment
Darien Posted December 7, 2022 Report Share Posted December 7, 2022 On 11/4/2012 at 3:22 PM, ggzilla said: HE38 = 3.889 CA - CA200 HD - H190 HE - H190 HF - H190A HG - H233 http://datsun1200.co...itle=Diff_Codes To get off the line better, the steepest ratio possible is recommended. 320 pickups had the H190 gear ratio of 5.125 and you can swap the center pumpkin into a 720 H190 housing Where do you find the 4.375 and the 5.125 in what year and model? Quote Link to comment
datzenmike Posted December 8, 2022 Report Share Posted December 8, 2022 Have never heard of a 5.125. He said it was in the 320 which is a mid '60s truck.I don't know. On the inner fender on the right side under the hood hinge is the engine tag. The axle ratio is far bottom right and may say HF 35 for a 3.545 or HF 38 for a 3.889 ratio I wouldn't go above 4.375 unless running 31s or 33s. Quote Link to comment
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