280zgod Posted July 3, 2004 Share #1 Posted July 3, 2004 hey everyone ive got a 75 280z with a 5spd not sure if thats an original but anyhow. i wanted to ask you guys how to check for which differential i have r200 r180 whatever. cuz i have no clue and knowing would be helpful. thanks. late. Link to comment https://www.classiczcars.com/topic/12462-differential-question/ Share on other sites More sharing options...
Bambikiller240 Posted July 3, 2004 Share #2 Posted July 3, 2004 see attachment Link to comment https://www.classiczcars.com/topic/12462-differential-question/#findComment-87406 Share on other sites More sharing options...
280zgod Posted July 4, 2004 Author Share #3 Posted July 4, 2004 well looks like i have the one on the left so r200 which is what end ratio 4.11 or3.9 anyone know? Link to comment https://www.classiczcars.com/topic/12462-differential-question/#findComment-87468 Share on other sites More sharing options...
Mr Camouflage Posted July 5, 2004 Share #4 Posted July 5, 2004 TO DETERMINE THE RATIO (internally) If you're not sure which ratio R200 you have lying around the garage, check it this way: Remove the rear plate (drain the oil of course). Then rotate the large ring gear until you see some numbers stamped into the edge facing you. If it's a 3.54 it will read "39:11" If it's a 3.70 it will read "37:10" If it's a 3.90 it will read "39:10" If it's a 4.11 it will read "37:9" http://geocities.com/zgarage2001/engine.htmlscroll down the page till you get to the part about diffs.I thought they had 3.7 or 3.9 in the 260/280Z, though that site recons it would be a 3.54:ermm: Link to comment https://www.classiczcars.com/topic/12462-differential-question/#findComment-87526 Share on other sites More sharing options...
zKars
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