just curious to see if anyone's lined up a stock z vs. another z modded only with the swapped final drive???

i installed my 3.9 a while a go and i can defiately tell a difference...just wanted so see if anyone raced em yet?


theoretically the 3.9 final drive should reach the limited top speed quicker that a stock car. So it would be cool to see them line up

 

yeah, i want to know, I've heard there's only a .2 second difference in top speed, which sure ain't worth my 1500 dollars! let me know if you find out man

 

uh no....If you where to drag it out to 155mph...the car with the 3.9....would be a football field ahead in the end 6 gear under normal cirmstance is a dog...

 

IIRC, the .2sec difference is in the 1/4, but is due to the fact that the 3.9-enabled car has to shift into 5th...

 

I dropped .5 second in the 1/4 mile with the 3.9 gears

But I also have A LOT of mods...

cold air intake mod (A 4" hole cut out in the plastic shroud right in front of the filter), JWT popcharger, ported throttlebody (just a clean up), ported Crawford plenum, Crawford headers, Crawford high flow cats, Fujitsubo Legalis-R exhaust, evo350 3.9 gears....

ran a best of 13.37@104 mph...

I can make it through the traps in 4th gear (6900-7000 rpm)

I have 7200 rpm to work with though


The gears drop the rpm right in the sweet spot on the rev-up engines and I think it explains the acceleration difference...

These gears made a HUGE difference on my '05 6MT G35 Sedan!

 

It's a very very good mod especially if you plan to remain NA i definately recommend that anyone doing na would get this it really does make a big difference and is worth the money imo but it's all up to the buyer

 

I think with the higher redline, like with the new 300hp engines, this would be a great mod. With the 6600 redline, this could just make you smack it that much more often with little gain in the 1/4. I would like to check one out on my local road courses though, I imagine that is where it would really shine, and not so much the 1320.
Will