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diff ratio

1K views 3 replies 3 participants last post by  crzyxf 
#1 ·
Afternoon all
Just a question about diff ratios.

Car is a stock 1969 XW 351windsor auto. Diff ratio at the moment is 3.25.

If you change the diff ratio to say a 3.5 or even 3.7 you obviously get better take off. My question is do you also get a better 1/4mile time or does the car rev out before the finish line and thus risk an even worse time???

thanks
Sam
 
#4 ·
No pretty sure you wont rev out the car b4 the finish line. A friend of mine put 3.9s on his XW and got heaps better 60ft time (but that was with a 3 grand stall!!)
 
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