How much are gears worth?

[DarkProphet]

Anyone have an idea of how much time in the 1/4 you gain by going from 2.73 to 3.55 or 3.73's? I tried searching as i thought i read it before but couldnt find the post? Im especially interested in the case of my car as I have about 370ish rwhp and stock gears. At 90 im around 2500 rpms which is good if I wanted to go like 170, but Id rather pass STI's faster... Thanks.

 

[JJ95GTID]

I gained nothing at the track by switching to 3.73s. Ran the same ETs before and after the gear swap.

Currently, I am shifting into fourth right at the 1000' mark which means I am no where near my peak rpm at the finish line.

 

[trav_19]

you gained nothing from your gear swap at the track...what the...... do you have a auto or stick?? since you have a supercharger you might want to go with 3.55

 

[chaos254]

im not suprised that he didn't gain anything at the track especially since he said hes not going through the traps at the right rpm ...some people even lose a few tenths because of the shift into 4th. It's all about gearing your car for your combo!

 

[reddy351]

im not suprised that he didn't gain anything at the track with a fairly stock engine ...some people even lose a few tenths because of the shift into 4th.

His sig--"Explorer intake, FRPP Y303 heads, Crane 1.7:1 rr, BBK E/L headers, Pypes catted X-pipe and Violater catback"

This is a "fairly stock" engine? He's got more mods (and important ones, too) than you do. Not trying to be a d1ck, but, sheesh!!!!

 

[chaos254]

His sig--"Explorer intake, FRPP Y303 heads, Crane 1.7:1 rr, BBK E/L headers, Pypes catted X-pipe and Violater catback"

This is a "fairly stock" engine? He's got more mods (and important ones, too) than you do. Not trying to be a d1ck, but, sheesh!!!!

i wrote the response quickly and just glanced over his sig lol....i tried correcting it but my internet is slow and wouldnt let me for awhile.

 

[Pokageek]

I am pretty sure from memory it is 1/2 the the gear. Meaning, 2.73 to 3.73's is .5 tenths or 1/2 a second with grip.

 

[Adam95GT]

I am pretty sure from memory it is 1/2 the the gear. Meaning, 2.73 to 3.73's is .5 tenths or 1/2 a second with grip.

Stock to 3.73's ive seen .3-.5 for the most part...

 

[DarkProphet]

4th runs out somewhere near 130 i think, (not really watching the spedo when going this fast) and im sure im not going to be trapping anywhere near that high. I have no idea what kind of gain to expect as most people get gears as one of their first mods, not after a new engine and supercharger haha. Thats what happens when things break though. I hope to gain atleast .3-.5, but I guess theres only one way to find out?

 

[stprorolla49]

Yea, hopefully you will see a few tenths cut off your ET. As mentioned above, I'd also go for 3.55 gears instead of the 3.73's as they are a much better blower gear.

 

[JJ95GTID]

Yes, with 3.73s no better at the track. I like many jumped right into the swap without much thought to trap speeds/rpms and my current setup. If I were to do it over I'd go with 4.30s for optimal track performance. But, now I am thinking of supercharging (centrifical type) someday and will keep the 3.73s.