cobraz240z Posted January 23, 2006 Share Posted January 23, 2006 ok i have a 1971 240z im almost getting ready to put the motor in but i need advice i have a 2.4 block ported and polished e31 head mild cam dellorto 3x2 40's 3-2-1 header and 3:90 gears should I use a 78 5 speed or a 81 speed both cars are in my loca pull your part i want to do a little autocross and still be able to be daily driven i know the gear ratios diffrence already but just need some advice of people who already done the swap Quote Link to comment Share on other sites More sharing options...
Clifton Posted January 30, 2006 Share Posted January 30, 2006 The 78 trans would have a lower 1st and 2nd that would benift you more for autoX. Quote Link to comment Share on other sites More sharing options...
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