turbonissanzx Posted March 20, 2009 Share Posted March 20, 2009 I have a 76 sbc z with a turbo 350 and that sucker is screaming on the high way and I think it would be an easier job to change the final drive than change tranny. I can only find one company that sells one and i am pretty sure it will not even fit http://www.rhdjapan.com/jdm-low/Kameari-R200-Final-Gear-Set-S30-Z31-R30-R31-58311 . I have the 3.56 stock and was wondering if you guy have any ideas Quote Link to comment Share on other sites More sharing options...
GLSHLE Posted March 20, 2009 Share Posted March 20, 2009 You can't fix it in the diff. I have the same thing with taller gears, and it screams. I'm putting in a 700r4. Quote Link to comment Share on other sites More sharing options...
Sideways Posted March 20, 2009 Share Posted March 20, 2009 What rear end do you use? From your link would it be safe to assume youre using an R200? Quote Link to comment Share on other sites More sharing options...
dustin280zx Posted March 20, 2009 Share Posted March 20, 2009 Define "screaming." I can cruise about 60 at 3000 rpms with 26" tire and 3.54 rear and a loose 8" converter. You could get a gear vendors overdrive unit. I would try a taller tire or a tighter converter. Your transmission or converter could also be slipping. Do some calculations and see what rpm it SHOULD be at the certain mph. Quote Link to comment Share on other sites More sharing options...
dsommer Posted March 20, 2009 Share Posted March 20, 2009 You could try to souce a 3.36 ring and pinion but they are hard to find. I'd ditch the tranny and switch to a manual gear box IMO. Quote Link to comment Share on other sites More sharing options...
Pyro Posted March 20, 2009 Share Posted March 20, 2009 easier to switch to a 200r-4 or 700r. I helped a friend install a dana44 from a 80 corvette into a Z. A lsd diff with 2.87 gears. with a thm350 trans it still ran 3000 rpm at 75 or 80 mph and feels a little doggy in 1st and 2nd due to the high gears. plus it was a trick to get the vette diff in the stock location. cover mods, 1/2 shaft mods, front mount fab. he recently switched to a 200r4 trans. we just had to move the trans mount and adjust the shifter and set up the TV cable on the carb. drive shaft was the same. now he is in the process of getting new 3.55 gears in the vette diff so 1st and 2nd feel stronger. i would go 5 spd manual. automatics suck in a z. use a GM t5 with a 3.90 gear. works great!!! Quote Link to comment Share on other sites More sharing options...
DavyZ Posted March 20, 2009 Share Posted March 20, 2009 easier to switch to a 200r-4 or 700r. Agreed. automatics suck in a z. No they don't. I have driven V8 Z cars with automatics and they are great from my experience. They also have 700R4 or 200R-4 automatics and work extremely well with the 4th (overdrive) gear. This guy may want an auto and there's really nothing wrong with that, especially for his intended use. The whole setup needs to work together: engine, transmission, rear gears, even the size of tires--you must take it all into account when building a car. ...use a GM t5 with a 3.90 gear. works great!!! Good to know, thanks That's what I have going in right now. I'll see how the 3.90 is with the T5 and if I don't like it, I'll swap in the 3.54 VSLD. Davy Quote Link to comment Share on other sites More sharing options...
saxfiend1967 Posted March 20, 2009 Share Posted March 20, 2009 I have a 3.36 rear end. I am swapping a 3,9 into it. I have a 3.54 too twhat I would do if I were not wanting to change tranny is 2 inch taller tires and 3.36 you can call me for either rear end 615-573-1990 the 3.36 is a 180 and may not take a ton of torque with sticky tires but should be fine other than that I am changing it because I am making 498 hp and 533 torque with stickys it will DDDDDDIIIIIEEEEE! I have the half shafts too Quote Link to comment Share on other sites More sharing options...
saxfiend1967 Posted March 20, 2009 Share Posted March 20, 2009 ps I have the 180 moustache bar too but If it were my car i would put a 200 4r in it it will bolt to the same driveshaft you already have as it is the same length and has the same spline count ,and is .63 od I believe Quote Link to comment Share on other sites More sharing options...
turbonissanzx Posted March 21, 2009 Author Share Posted March 21, 2009 Agreed. No they don't. I have driven V8 Z cars with automatics and they are great from my experience. They also have 700R4 or 200R-4 automatics and work extremely well with the 4th (overdrive) gear. This guy may want an auto and there's really nothing wrong with that, especially for his intended use. The whole setup needs to work together: engine, transmission, rear gears, even the size of tires--you must take it all into account when building a car. Good to know, thanks That's what I have going in right now. I'll see how the 3.90 is with the T5 and if I don't like it, I'll swap in the 3.54 VSLD. Davy sounds like a good idea but is there any fabracating needed to install a t5 and do you think the drive shaft from the th350 slash r200 will bolt to the t5 Quote Link to comment Share on other sites More sharing options...
turbonissanzx Posted March 21, 2009 Author Share Posted March 21, 2009 ps I have the 180 moustache bar too but If it were my car i would put a 200 4r in it it will bolt to the same driveshaft you already have as it is the same length and has the same spline count ,and is .63 od I believe hey thanks will look into the 700r4 and it would be great to have od would you say it is hevier than the th350 and any clearence problems in the tranny tunnel and not realy wanting to put a 180r in my z still shooting for around 400 to the wheels thanks. Quote Link to comment Share on other sites More sharing options...
280Zone Posted March 21, 2009 Share Posted March 21, 2009 The 700R4 will fit right in if the TH350 did. Being a novice at the 1/4 track I prefer the full on auto trans, no clutch, and no shifting, just push and it GOES! Quote Link to comment Share on other sites More sharing options...
ShaggyZ Posted March 21, 2009 Share Posted March 21, 2009 I have a R200 3.15 LSD that could, sadly, be up for sale before long. It would be great for you. I've been having to sell stuff and am about to start looking at parts of the Z to get rid of. Quote Link to comment Share on other sites More sharing options...
turbonissanzx Posted March 21, 2009 Author Share Posted March 21, 2009 The 700R4 will fit right in if the TH350 did. Being a novice at the 1/4 track I prefer the full on auto trans, no clutch, and no shifting, just push and it GOES! true i like them too they are more consistent at the track hey thanks for the advice Quote Link to comment Share on other sites More sharing options...
turbonissanzx Posted March 21, 2009 Author Share Posted March 21, 2009 I have a R200 3.15 LSD that could, sadly, be up for sale before long. It would be great for you. I've been having to sell stuff and am about to start looking at parts of the Z to get rid of. sounds good what you want for it? Quote Link to comment Share on other sites More sharing options...
ShaggyZ Posted March 21, 2009 Share Posted March 21, 2009 sounds good what you want for it? It's not cheap because it's uber rare and I paid just over $800 after shipping, if I recall, and people agree I got a fantastic deal on it. I'll try to remember to look you up if/when it goes up for sale. Quote Link to comment Share on other sites More sharing options...
DavyZ Posted March 22, 2009 Share Posted March 22, 2009 sounds like a good idea but is there any fabracating needed to install a t5 and do you think the drive shaft from the th350 slash r200 will bolt to the t5 The 200R-4 transmission will bolt in and be the same length as the TH350 tranny. You won't have to have the driveshaft resized or anything. If you put in the T5, you will have to have the driveshaft shortened (if memory serves). Try searching the topics in the forum and you'll probably find the answer you are looking for. There's gold in the archives. Davy Quote Link to comment Share on other sites More sharing options...
turbonissanzx Posted March 22, 2009 Author Share Posted March 22, 2009 The 200R-4 transmission will bolt in and be the same length as the TH350 tranny. You won't have to have the driveshaft resized or anything. If you put in the T5, you will have to have the driveshaft shortened (if memory serves). Try searching the topics in the forum and you'll probably find the answer you are looking for. There's gold in the archives. Davy thanks ,I think I would rather try a 700r4 instead of the 200r4 i heard they are not as strong. Quote Link to comment Share on other sites More sharing options...
GLSHLE Posted March 22, 2009 Share Posted March 22, 2009 I'd think twice about a 200-4. I bought 82 Z28 in 83 (now the ex's) 305 150 hp. The tranny went out a couple of years later. Got it fixed with a lifetime replacement. It's on #4, and its going south. Thats with over 10 years of driveway quiet time. There's a kit for the 700-4 that they say it will take 500hp. I don't know about the driveshaft yet, but I figure I'll have to have it worked on. My 3.36 r180 clsd couldn't take 400hp. a shift kit and a slapstick. I'm not a young man ,and if I never step on a clutch again that would be nice. My .02 Randy Quote Link to comment Share on other sites More sharing options...
dr_hunt Posted March 22, 2009 Share Posted March 22, 2009 i would go 5 spd manual. automatics suck in a z. QUOTE] I dont' agree with this statement either. For one thing sticks can't handle that much TQ, about 600 lb-ft max using the TKO trans, otherwise its about 300 to 400lb ft. Auto's can handle that and alot more. On a cost basis the manual trans is going to cost alot by the time you get a flywheel, clutch, scattershield, etc. and the overdrive auto is costly as well so it is a toss up IMO if your anywhere near 400 to 500lb-ft of TQ. If he were to get a 3.15 or even in the 3.30 range it will drop his rpm by about 500 to 250 rpm at cruising speed respectively. So 2500 rpm at cruising is alot better than 3000. Gear vendors overdrive units are big $$$ too. As for being doggy in the first two gears, then it seems obious that the engine is underpowered and/or the stall speed in the converter is too low, especially in a light z. Quote Link to comment Share on other sites More sharing options...
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