Quote:
Originally Posted by josh1990
You'll find 3.73 gears behind 6 speed manual falcons. However, Turbo and V8 models are M86 and will not fit your housing. As mentioned, you can find the ratios you're after in old pintaras and skylines. But be warned, there are 3.89 and 3.91 ratio from those models. You want the 3.91 as the 3.89 are notorious for whining. I used the 3.89 in my BA and they whined like a banshee. To the point I went back to a 3.45 (I do miss the acceleration though).
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Only the M86 cars use 3.73 diff gears with the 2.9/2.6 first gear ratio. Standard boxes have the shorter 3.3 first gear so only got the 3.45 diff ratio