Zreddy Posted September 24, 2009 Share Posted September 24, 2009 Some guy is trying to sell me an r200 with a 4:64 gear ratio, anyone have any inputs or advice on that situation? im actually after a 4:11 bc i've read that they are better suited for the rb25tranny or z32 tranny which are the same internals, sorry if im mistaken... But just wanted some inputs if anyone has tried anything higher than 4:11 diffs on their rbz setups and how the drive is.... thanks!! Quote Link to comment Share on other sites More sharing options...
240zdan Posted September 24, 2009 Share Posted September 24, 2009 A 4.11 would put you right about at 120-125mph in 4th gear, depending on tire size. Its most ideal, especially for drag racing. I think a 4.64 would be ok but 1st 2nd would be totally useless and highway cruising would be horrible. I say wait it out and buy a 4.11 Quote Link to comment Share on other sites More sharing options...
stony Posted September 24, 2009 Share Posted September 24, 2009 I had a 4:88/w an rb25 5 speed at one time. made for great launches and put me in the top of 5th gear thru the traps, but this was with a stock engine with 400rwhp. if i made more power and didn't break anything i would have had to re-gear or use bigger tires. Also remember with higher gearing your putting more torque thru the rear end. i actually broke a stub shaft before i even staged just checking traction. popped the clutch at around 2500 rpm and POW.... Quote Link to comment Share on other sites More sharing options...
thehelix112 Posted September 25, 2009 Share Posted September 25, 2009 If you don't want it i'll take it off his hands. Quote Link to comment Share on other sites More sharing options...
Zreddy Posted September 26, 2009 Author Share Posted September 26, 2009 If you don't want it i'll take it off his hands. Hey go for it man... he's on craigslist. Cool guy too... i actually talked to him about his diffs that he's selling. Better get on it before someone else does!!!! Quote Link to comment Share on other sites More sharing options...
Zreddy Posted September 26, 2009 Author Share Posted September 26, 2009 A 4.11 would put you right about at 120-125mph in 4th gear, depending on tire size. Its most ideal, especially for drag racing.I think a 4.64 would be ok but 1st 2nd would be totally useless and highway cruising would be horrible. I say wait it out and buy a 4.11 I had a 4:88/w an rb25 5 speed at one time. made for great launches and put me in the top of 5th gear thru the traps, but this was with a stock engine with 400rwhp. if i made more power and didn't break anything i would have had to re-gear or use bigger tires. Also remember with higher gearing your putting more torque thru the rear end. i actually broke a stub shaft before i even staged just checking traction. popped the clutch at around 2500 rpm and POW.... Yea i kinda figured...i wouldnt want to have to change it all over again or buy new parts if things did break. I was actually thinking of this, that i would just use the stock r180 just to drive it around (not hard) and make sure everything is working right on the car while im looking for that 4:11 diff. Idk if its a good idea, but hopefully it'll do the job so i can drive it already... I appreciate your guy's advice though. This forum is great!!! helpful people and helpful threads... Quote Link to comment Share on other sites More sharing options...
Z-Creations Posted September 30, 2009 Share Posted September 30, 2009 I'm looking to go with a 4.11 diff but haven't had luck finding one yet Quote Link to comment Share on other sites More sharing options...
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