Guest Anonymous Posted May 8, 2000 Share Posted May 8, 2000 I have a 71 240z. I have a 350 in the machine shop presently which should be running somewhere around 300hp when done. The stock R180 is in the car presently. I was wondering what rear end would be best for my aplication. I'm putting a t5 in the car. I'm not to worried about gas mileage. I was thinking a R200 out of a 81-83 datsun non-turbo would be good (3.9 ratio). But I don't know much about the datsun rear ends. Any suggestions would be appreciated. Jamison Quote Link to comment Share on other sites More sharing options...
Modern Motorsports Ltd Posted May 8, 2000 Share Posted May 8, 2000 How are you going to be using/driving your car?? What size/type tires, suspension setup etc, are you an agressive stoplight racer or enjoyable cruiser? If you're not looking for max power which I suspect from what you've written already going 300hp and T5 I'd recc'd keeping your r180 initially to see how you like the acceration/power of your brand new setup. If you feel it's great then find an R200 in the same or closest ratio. If you want a lot more jump to a 4.11 R200 and you'll get your max bang/buck by far. I sure wouldn't jump to a 3.9 or 4.11 until you know for sure you have the traction to use and the attitude (good or bad:-) to enjoy it. If you do want a 4.11 and can't find any (they're not overly common at all) I have them available for sale. Quote Link to comment Share on other sites More sharing options...
Guest Anonymous Posted May 10, 2000 Share Posted May 10, 2000 The suspension is all stock I beleive. I'll be using the largest tires as possible under the stock suspension with out rubbing. most likely some 225/50's. I go to the drag strip about 1 time every mounth. I do not ever shift without using the clutch (even at the drags) but I do shift as hard and fast as possible. I am a BIG stop light racer. I own a 280zx also which is to slow for my taste, but it's still fun to scoot around in. I plan on using my 240 v8 Z for daily driving (not long distance) but I still want speed. My main goal is to at the minimum run 13's. Is this pretty easy with a v8 Z? What rpm will I be at when my Z is going 70mph with a t5 and 3.9 rear end? thanks in advance for any advice. Jamison Quote Link to comment Share on other sites More sharing options...
John Scott Posted May 10, 2000 Share Posted May 10, 2000 @70 mph 3.90 rear, w/ 25" tire the T5 with .63 5th will run 2312 rpm, the .73 5th will run 2673 rpm. With the ultalight Zs low gears aren't a neccessity to run fast times. Traction is going to be a big issue. Lower gears will only make this worse. I wouldn't think A 13 sec. 1/4 would be hard to get with 3.55s and a mild build. If you can put the rubber down, the lower gears will obviously help your accel. times. Milage may not be a concern, but overdrive makes life a little nicer for highway cruising, and easier on the engine. JS Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.