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post #1 of 11 (permalink) Old 02-05-2011, 02:57 PM Thread Starter
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Exclamation gear ratio help!

i was wondering if i wanted to change my gear ratio to 3.73 or 3.55 is there anything i should do or be aware of. I've honestly never done this before and im just looking for tips
Thanks!

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post #2 of 11 (permalink) Old 02-05-2011, 03:09 PM
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I've honestly never done this before and im just looking for tips
Thanks!
Have it done professionally.

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post #3 of 11 (permalink) Old 02-05-2011, 03:09 PM
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Originally Posted by 96blackbird View Post
i was wondering if i wanted to change my gear ratio to 3.73 or 3.55 is there anything i should do or be aware of. I've honestly never done this before and im just looking for tips
Thanks!
Your stock gears are 3.27, so going to either of those is not a problem.


Two issues:

1) You will have to change your speedo gear or your speedometer will be off.

2) If you don't have a chip/tune, your max speed will drop. ie, if your speed limiter cut in at 104 with the 3.27, it will cut in at about 98 with 3.55 and 93 with 3.73's.

I started with 3.08's in the rear and swapped out to 3.27's and my max speed went from 104 to 98 since I don't have a tune yet.

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Have it done professionally.

Joe
+1 I kind of "assumed" he wasn't going to do it himself...

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post #4 of 11 (permalink) Old 02-05-2011, 03:38 PM Thread Starter
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Quote:
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Have it done professionally.

Joe
well i wasnt going to do it myself, my dad has plenty of experience changing ring and pinions i was just asking for tips on stuff like the speedo gear ect.

"you make the most power rrrightt before the pistons melt"

Last edited by 96blackbird; 02-05-2011 at 03:47 PM.
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post #5 of 11 (permalink) Old 02-05-2011, 03:43 PM
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Ok, I thought you were going to try them on your own!

Do it up Dad!

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post #6 of 11 (permalink) Old 02-05-2011, 03:44 PM Thread Starter
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also if i do 3.73 how much will it effect my tranny? Will it hit the rev limiter at wot? If so what can i do to get rip of this, im asumming a tune but id like to avoid that because of my budget

"you make the most power rrrightt before the pistons melt"

Last edited by 96blackbird; 02-05-2011 at 03:51 PM.
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post #7 of 11 (permalink) Old 02-05-2011, 03:50 PM
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Revs will be unaffected, though your speed limiter will drop to around 89

-Matt
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post #8 of 11 (permalink) Old 02-05-2011, 03:56 PM Thread Starter
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ok thanks! So when i change the gear ratio what speed gear do i get? How many teeth?
Thanks!

"you make the most power rrrightt before the pistons melt"
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post #9 of 11 (permalink) Old 02-05-2011, 05:06 PM
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ok thanks! So when i change the gear ratio what speed gear do i get? How many teeth?
Thanks!
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post #10 of 11 (permalink) Old 04-27-2011, 11:18 PM
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I have my 21 tooth speedo gear for 3.73 gears. Do i still require a tune. If my top speed is going to be around 150km/h im cool with that. my speed limiter kicks in at 160km/h i believe but i hardly take it up to that speed. Can i buy a tuner and change the limiter myself? I think im willing to buy one now because I also did the PI Intake Swap.
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post #11 of 11 (permalink) Old 04-28-2011, 07:17 AM
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I have my 21 tooth speedo gear for 3.73 gears. Do i still require a tune. If my top speed is going to be around 150km/h im cool with that. my speed limiter kicks in at 160km/h i believe but i hardly take it up to that speed. Can i buy a tuner and change the limiter myself? I think im willing to buy one now because I also did the PI Intake Swap.
Yes, SCT is the preferred solution on this board. They will help you with the tune for your car and yes, it will remove/raise the speed limiter. I haven't done it yet, so I'm sure someone with more experience will help you shortly.

~Rick

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