
whats the best diff ratio running a 893 blade,15" wheels and english axle thanks and has anyone got one for sale ?
im running a 3.9:1 lsd, on 15s and an r1 engine. get about 115mph tops...im thinking of going to 3.1:1
As low as you can get. Be prepared to part with your cash though.
If all else fails a 3.62 would do....
For an English axle, the lowest you can get is the 3.54 RS2000 axle....
i saw one im going to save up for, i cant really remember where, but it was a 3.1 for fords...ill try find it...
3.62 is probably the best all rounder for the 893, easy to get LSD too.
195/50/15 = EXACTLY 1000rpm per 10mph in top, so top speed is what you want to rev it to10000=100mph, that me being mechanically sympathetic 
7000=70 on the motorwasy , but still low enough to spin the wheels whjen you choose
i would go 3.38 mate. that is perfect for the R1. anywhere near 3.14 will be way too high geared imho.i heard a guy say he ran 3.14 on R1 and it did 85 mph in 1st gear.the blade will not be a massive ammount different to R1 i would imagine. 3.14's are for busa's and the like!
Chaps - read the question. He's using an english axle (well done Twybrow)!
In addition, Chris Gamlin's calculator is your friend: Click Me!
What the data says is that a 3.54 will give you 128mph (if you can get there!) and a 3.89 will give you 116mph.
Hope that helps.
Sorry to hijack the thread, but where does that leave me with my 3.66 english and a 1.6 ford anchor??
