These are supposedly one of the best N/A mods you can do...

I would love to see some 0-60 and 1/4 mile times..

 

^^^ What he said. :-)

 

i'd like to know part numbers for the quaife and the speedo ring gear. they don't list anything for the G37 ...

 

Is this mod do-able on AWD?

 

How are y'all correcting your speedos?

 

speedo is not off to begin with..

 

No.


As to the other question, yes the speedo WILL be off if you change gear ratio's. But I think has been determined to be such a small amount that correction isn't really necessary. I think they figured out that at 65mph you'd only be off 3 mph or something. Hardly worth the effort to "fix"

 

Why would the speedo be off? Isn't vehicle speed measured from the front wheels?

I mean when my wheels are spinning on wet surface my speedo doesn't go crazy.. the rpm on the other hand

 

i would like to see some 0-60 times as well..might have to put this on my list of to do`s..

 

You could be right. But every modern car I've seen in the last 10 years or so get it from other locations now. S2000 for example gets it from the transmission . When you change the gear ratio's it throws it off.

 

So what is the top speed with this mod? Reason I ask is for the 1 mile run in TX

 

Kosstick, didn't you say you were swapping our your rear pumpkin completely, with another make/model? Evidently not eh? Did you notice how the abs sensors came out of the pumpkin when you installed it? I mentioned in another thread - I'm swapping completely, the rear pumpkin from an '08 HR Z w/ 4.08 FD gears. Still haven't solved this 1 abs sensor thing versus my 2 abs sensors.

 

I haven't actually done the mod, but from what I hear...each gear is 10% shorter. Sorry...all the info I have at the moment

 

"the convertible with 7a/t comes with a 3.36 final drive but the 6m/t has a 3.91 instead of the 3.69 of the coupe with 6m/t".

This being the case, if I changed my final drive from 3.36 to 3.91 (instead of 4.08), would I get similar benefits? Is changing it even possible (swap vert part for coupe part)? I am not interested in top speed (max allowed here is 120Km/h, but I would love better acceleration

 

I have been following these threads for a while now and agree with the above why not go 3.91 instead of 4.08. I know when I used to build street and stip cars we always used 3.73( Perfect all a round gear). Not sure why everyone goes 4.08..