Diff ratios ??

[David Costello]

I was just wondering if anyone could recomend a diff ratio to use...   I've got a 120Y sedan, it's been lightened (fiber glass front guards, bonnet and boot, no spare or jack, perspex rear windows and quarter glass, no carpet or foor lining) L16, single webber (soon to be twins), Ivan Tighe cam, oversized flat top forged pistons, lightweight crank, ported heads with BIG (6cyl) valves, extractors, 2" sports system, 5 spd SSS Stanza box   I've got 2 diffs, the standard 120Y diff with 3.900:1 gears and 1 from a SSS Stanza with 4.375:1 gears that I can get shortened   The stanza diff would be a lot stronger but I think the ratio would be too low for this setup wouldn't it? The 120Y diff would probably be a better ratio but it wouldn't last a week behind that engine   would either of these diffs be suitable? if not, what does everyone recomend?   oh by the way it's for the 1/4 mile, not worried about whether it revs hard on the freeway or performance for circut type situations, just after best possible 1/4 mile times --membersozdat------------------------------------------------------- OZDAT Mailing List Please Note:- Send (un)subscribe requests to [EMAIL PROTECTED] Send submissions to [EMAIL PROTECTED] No unauthorised redistribution of this email http://www.ozdat.com/ozdatonline/index.htm http://www.ozdat.com/ozdatonline/listindex.html http://www.mail-archive.com/membersozdat@datascribe.com.au/ ---------------------------------------------------------------------