Naw, unless your jack's pad is tiny, this should fit on a "normal" jack pad (6-8" dia) okay. I've lifted/removed our maxima trannies on my dad's old (huge) Walker hydraulic jack many times.

 

LOL.

Thats what I did. Had the car on jackstands, put the differential on the floor jack and slid it under my car. Then I lifted it up to get the rear bolt in place and held up the front while I screwed in the mount bolts. Wish I had more room and more hands, but I got it done.


Make sure you loosen up the sway bar bushing mounts. You'll need the clearance.

 

I drove my car on a 100 mile round trip to my sisters and reset the gas mileage. I kept it around 75 MPH. I noticed that I never needed the engine to kick down in gear while I was driving where it would have kicked down before. Also, gas mileage was about 25-26 mpg the whole way. It was mountainous terrain...lots of big up and downs.

 

is that the same mpg as before (in same conditions)?

 

Ya, thats not too far off from what it was before. The diff was that I drove about 3-4 MPH slower on average. Thats about it.

 

good, so your mpg hasnt changed much either...

many ppl think thats a drawback to this mod - but my mpg is a sh!tty as its always been - your apparently hasn't changed (much if any) and most others don't report meaningful loss...

going form 3.5 to 3.9 or 4.0 might be different - buy 3.3 to 3.5 or 3.7 hasnt shown to be detrimental to mpg

This of course does not count the super sh!tty mpg from staying in 2nd & 3rd and driving spirited more often because its fun

 

You will get lower MPG if you are driving at the same speeds. Since it raises the RPM's about 200 for each step up in gearing your optimum MPG will decrease about 5 mph.

For 5AT:
3.3 best at ~80 mph
3.5 best at ~75 mph
3.7 best at ~70 mph (guess)
3.9 best at ~65 mph (guess)

 

recent road trip averaging 70mph I got as good as I ever got...

even under typical circumstances (street & freeway) I never saw more than 1mpg difference... but most of my driving is not typical.

In normal driving its not likely that anyone is going to see a significant decrease in mpg by switching form 3.3 to 3.5 or 3.7

 

right, in normal driving I don't think that you are likely to see much difference in gas mileage other than accelerating faster because its more fun.

 

Im at between 3 and 4k rpms at 80mph

 

you need to be more specific.

07 G35S (should have the 3.7) should be around 3275 or so

does the 2007 still have the 5AT or did it get the 7AT?

 

5AT
HR motor
I will look. I dont pay attention to the exact numbers.





Im a girl... I just push on the gas and hear it go vrrroooommm. LOL

 

Set your cruise control at 80 mph on a flat terrain. Then look to see what it is.

Silly girls...and when you start hearing a noise you dont like you just turn the radio up right??

 

2005 6MT Coupe with new motor under 200miles..


3100rpm at 80mph in 6th gear...

 

I remembered to look at my rpm's finally. So last night i noticed that at 81 mph i was at 2900 rpm's. 03 6mt sedan