What final drive that is possible to "buy" is the best for 200 whp all motor itr for 1/4 mile?
Any ideas, comments, web sites?

 

http://www.a-t-s-usa.com/ats-p...shtml

 

I may be wrong, but I think any aftermarket final drive is going to slow you down in the 1/4.

 

You are wrong.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jond &raquo;</TD></TR><TR><TD CLASS="quote">I may be wrong, but I think any aftermarket final drive is going to slow you down in the 1/4.
</TD></TR></TABLE>

 

You wont have to shift into 5th before the trap?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jond &raquo;</TD></TR><TR><TD CLASS="quote">You wont have to shift into 5th before the trap?

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most likely not..

Everyone on the board seems to refer to this one post, where someone had an ITR tranny in a EG, w/the ATS FD. He did some runs, conclude the ATS was slower in the 1/4.

No one considered that the OD of his tire has smaller than the ITR tire, so he effectivley geared his car lower than OEM *2times*.

*He* was shifting into 5th. In a ITR w/OEM Size tire that is most likely not going to happen.

If you guys wanna check it out yourself, here is a gear calc you can mess w/
http://reverendsgarage.net/ind...r.php

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DsR &raquo;</TD></TR><TR><TD CLASS="quote">

most likely not..

Everyone on the board seems to refer to this one post, where someone had an ITR tranny in a EG, w/the ATS FD. He did some runs, conclude the ATS was slower in the 1/4.

No one considered that the OD of his tire has smaller than the ITR tire, so he effectivley geared his car lower than OEM *2times*.

*He* was shifting into 5th. In a ITR w/OEM Size tire that is most likely not going to happen.

If you guys wanna check it out yourself, here is a gear calc you can mess w/
http://reverendsgarage.net/ind...r.php</TD></TR></TABLE>

Gotcha.

 

Now I have 4.7X (EDM=JDM tranny) with shorter 4th and 5th gear (4 was so weak until this mod). Now I finish 1/4 mile on 4th gear on 8700 rpm. But is there something better for me for 1/4 than 4.7? 4.9 would be better or not?

 

5.1

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by itr_18 &raquo;</TD></TR><TR><TD CLASS="quote">Now I have 4.7X (EDM=JDM tranny) with shorter 4th and 5th gear (4 was so weak until this mod). Now I finish 1/4 mile on 4th gear on 8700 rpm. But is there something better for me for 1/4 than 4.7? 4.9 would be better or not?</TD></TR></TABLE>

If that's the case 4.9 may be too short.. it sounds like you would be shifting into 5th right @the end. (maybe jond is right)

4.9 would net better accleration for the majority of distances.. But if you are only after 1/4mile, it's probobly best to leave it alone.

not to mention you save yourself $750


Modified by DsR at 12:46 PM 2/21/2004

 

..... just raise your rev limiter to 9200 and run the 4.9.

If it's good enough for erick aguilar, it's good enough for me!

 

Its already 9100 and Im going in 9400-9500 on new cams. SO? 4.9?

 

Why you get a higher final drive for? To get more acceleration! So, given the right conditions you should be quicker in the 1/4 mile.

 

thx for answers!