jca25 1,034 Posted November 8, 2020 Hi guys trying to work out the ratio on this diff with out taking the hat off as the tag is long gone can any of you work out the sticker Cheers Jason Sent from my SM-G950F using Tapatalk Share this post Link to post Share on other sites
Boingk 862 Posted November 8, 2020 Not sure mate, but if there's one thing I've learnt is to not trust anything anymore - lots of parts interchange and anyone could have done so in the past. Jack a rear wheel up so it can turn freely. With the handbrake off and the wheel chocked, put the car in neutral and turn that wheel one full turn. Have someone look underneath at the tailshaft and record how many turns it does. It helps if you put a mark on it first. The number of turns is your diff ratio, eg 3 turns will be a 2.92 or 3.08, 2.7 turns a 2.72, 3 and a quarter a 3.23 and so on. - boingk 2 bear351c and jca25 reacted to this Share this post Link to post Share on other sites
gerg 10,871 Posted November 8, 2020 If you know what it came out of, that would give some clue. Sedans still had 2.92, wagons 3.23, utes 3.27, XR sedan I dunno maybe 3.27, XR ute 3.45? Pop the hat off,will only take 10 min max, and the ratio will be etched on the crownwheel.Sent from my CPH1920 using Tapatalk 2 Outback Jack and jca25 reacted to this Share this post Link to post Share on other sites
jca25 1,034 Posted November 8, 2020 It's still in the car its a gli sedan, i was just being lazy and didn't want to drop the oil, a mate from speedway is looking for 3.23 for this weekendSent from my SM-G950F using Tapatalk Share this post Link to post Share on other sites
gerg 10,871 Posted November 8, 2020 It's still in the car its a gli sedan, i was just being lazy and didn't want to drop the oil, a mate from speedway is looking for 3.23 for this weekendSent from my SM-G950F using TapatalkWagon is the go then. You'll obviously have to swap gears out if going into a sedan.Sent from my CPH1920 using Tapatalk 1 jca25 reacted to this Share this post Link to post Share on other sites
Thom 6,641 Posted November 8, 2020 If you know what it came out of, that would give some clue. Sedans still had 2.92, wagons 3.23, utes 3.27, XR sedan I dunno maybe 3.27, XR ute 3.45? Pop the hat off,will only take 10 min max, and the ratio will be etched on the crownwheel.Sent from my CPH1920 using Tapatalk gli and futura Sedans went to 3.08 as a standard ratio from eb to au, fairmonts and fairlane were 3.23 standard, xr6 and 6 cylinder fairmont ghia were 3.45's xr8 (and 5.0l in general) had 3.23 open diffs until el then xr8 came standard with 3.45, but most ratios were optional and available in all models 4 jca25, bear351c, gerg and 1 other reacted to this Share this post Link to post Share on other sites
jca25 1,034 Posted November 8, 2020 Wagon is the go then. You'll obviously have to swap gears out if going into a sedan.Sent from my CPH1920 using TapatalkWell i say me mate is still chasing gears then i got the sedan for the wiring harness, needs to be modified to fit a au Sent from my SM-G950F using Tapatalk Share this post Link to post Share on other sites
gerg 10,871 Posted November 8, 2020 gli and futura Sedans went to 3.08 as a standard ratio from eb to au, fairmonts and fairlane were 3.23 standard, xr6 and 6 cylinder fairmont ghia were 3.45's xr8 (and 5.0l in general) had 3.23 open diffs until el then xr8 came standard with 3.45, but most ratios were optional and available in all models Thanks Thom, didn't know about the 3.08 (thought that was just ELs and Commos)Sent from my CPH1920 using Tapatalk Share this post Link to post Share on other sites