i know there are calculators etc to work out ratios speed etc....

but currently i have a 3.38 non lsd

what on the road can i expect if i change to a 3.92..

is is noticable?

its a pinto with bike carbs megajolt, etc...



[Edited on 15/2/09 by robbydee]

I have a pinto with a 3.62 and it seems about right to me for on the road
Mookaloid had a 3.92 for hill climbing

What sort of speeds do you get with a 3.38 diff in each gear? What's your top speed and how long does it take to reach 60mph? If you include these details, then maybe someone with a 3.62 or 3.92 diff and similar engine can give you their figures.

Phil

Tyre sizes can also make a difference. I have a 3.62 on my 1600 xflow engined car running 195/50/15 tyres which seems fine to me , suspect a 3.92 diff would perhaps be slightly quicker on acceleration but engine revs would be higher for any given road speed

Surely its just 3.38/3.92 x whatever speed you get in each gear or top speed.

Or to look at it another way you'll be doing 3.92/3.38 x the revs you currently do in any gear at a certain speed (e.g. motorway cruising).

I've not changed ratios in the same car but my old Blackbird Fury has a ~3.9 diff and that went well to 60 etc but did top out quite earlier (~110/115 mph IIRC)

I will swap a 3.92 Diff for your 3.38, Cash your way aswell...